Operation Manual

ManualsBrandsKubota ManualsMiscellaneousBX25

BX25,

RCK54(P)-23BX,

RCK60B-23BX,

LA240,

BT601,

WSM

SAFETY

INSTRUCTIONS

A SAFETY FIRST

This symbol,

the

industry's

"Safety

Alert

Symbol",

is used

throughout

this

manual and on labels on

the machine

itself

warn

the

possibility

personal injury. Read these

instructions

carefully.

essential

that

you

read the

instructions

and safety regulations before

you

attempt

repair

use

this

unit.

A DANGER

: Indicates an

imminently

hazardous situation which,

not

avoided,

will

result in

death

serious

injury.

A WARNING

: Indicates a potentially hazardous

situation

which,

not

avoided,

could

result

death

serious injury.

A CAUTION

: Indicates a potentially hazardous

situation

which,

not

avoided, may

result

minor

moderate injury.

• IMPORTANT

: Indicates

that

equipment

property damage

could

result

instructions

are

not

followed.

• NOTE

: Gives helpful information .

BEFORE SERVICING AND REPAIRING

•

Read

all instructions

and

safety instructions

this

manual

and

on your machine safety decals.

• Clean the work area and machine.

• Park the machine

a firm and level ground,

and

set

the parking brake.

• Lower the implement

the ground.

• Stop the engine, and remove the key.

• Disconnect the battery negative cable.

• Hang a

''~O

NOT OPERA

TEn

tag

operator

station.

Summary of content (448 pages)

PAGE 1
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM A SAFETY INSTRUCTIONS I SAFETY FIRST This symbol, the industry's "Safety Alert Symbol", is used throughout this manual and on labels on the machine itself to warn of the possibility of personal injury. Read these instructions carefully. It is essential that you read the instructions and safety regulations before you attempt to repair or use this unit.
PAGE 2
BX25, RCK54(P)-23BX, RCKSOB-23BX, lA240, BTS01, WSM SAFETY INSTRUCTIONS SAFETY STARTING • Do not start the engine by shorting across starter terminals or bypassing the safety start switch. • Do not alter or remove any part of machine safety system. • Before starting the engine, make sure that all shift levers are in neutral positions or in disengaged positions. • Never start the engine while standing on ground. Start the engine only from operator's seat.
PAGE 3
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM SAFETY INSTRUCTIONS AVOID FIRES • Fuel is extremely flammable and explosive under certain conditions. Do not smoke or allow flames or sparks in your working area . • To avoid sparks from an accidental short circuit, always disconnect the battery negative cable first and connect it last. • Battery gas can explode. Keep sparks and open flame away from the top of battery, especially when charging the battery.
PAGE 4
BX25, RCK54(P)-23BX, RCK60B-23BX,lA240, BT601, WSM SAFETY INSTRUCTIONS PREPARE FOR EMERGENCIES • Keep a first aid kit and fire extinguisher handy at all times. • Keep emergency numbers for doctors, ambulance service, hospital and fire department near your telephone.
PAGE 5
SAFETY INSTRUCTIONS BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM SAFETY DECALS I The following safety decals are installed on the machine. If a decal becomes damaged, illegible or is not on the machine, replace it. The decal part number is listed in the parts list. (1) Part No. K2581-6548-1 (2) Part No. K2581-6548-1 Never modify or repair a ROPS because welding, grinding, drilling or culling any portion may weaken the sb'Ucture. ~ TO AVOID PERSONAL INJURY WHEN RAISING OR FOLDING ROPS: 1.
PAGE 6
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM SAFETY INSTRUCTIONS (1) Part No. K2581-6554-1 (2) Part No. K2591-6557-2 1AGAJAXAP044E (3) Part No. K2581-6556-1 ~ TO AVOID PERSONAL INJURY 1 Attacll nul Ie!! or tOl.'lecl loaels io the Illtch only. 2. Use tile 3-1)0Il1t IlIte!l onlv wl1l1 equipment [Ieslgnecl tor 3-point Ililch usage 1AGAJAXAP046E (4) Part No.
PAGE 7
BX25, RCK54(P)-23BX. RCK60B-23BX, lA240, BT601, WSM SAFETY INSTRUCTIONS (1) Part No. K2581-6557-1 (2) Part No. K2581-6547-1 Stay clear of engine fan and fanbelt 1AGAJAXAP048E (3) Part No. K2581-6542-1 Do not touch hot surface like muffler, etc. (4) Part No.
PAGE 8
SAFETY INSTRUCTIONS BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (1) Part No. K2561-6115-1 (2) Part No, K2561-6116-1 KEEP OUT OF THE REACH OF CHILDREN. 00 NOT TIP. DO NOT OPEN BATTERY' I I I FLUSH ~GET EYES ~ MEDICAL IMMEDIATELY t!~:if. HELP WITH WATER . - ~ FAST I NO EXPLOSIVE - SPARKS GASEScAN CAUSE I -FLAMES BUNDNESS OR INJURY 1AGAJAXAP053E • SMOKING 1AGAJAXAP054E CARES FOR SAFETY ALERT LABELS 1. Always keep the labels clean and avoid damaging them.
PAGE 9
SPECIFICATIONS BX25, RCK54(P)·23BX, RCK60B·23BX, LA240, BT601, WSM SPECIFICATIONS Model BX25 PTO power 13.2 kW (17.7 HP)' Maker KUBOTA Model D902·E3·BX·2 Type Indirect Injection, vertical, water·cooled, 4·cycle diesel Number of cylinders 3 Bore and stroke Engine 72 x 73.6 mm (2.83 x 2.90 in.) Total displacement 898 cm,j (54.8 cu.in.) Engine gross power 17.1 kW (23.0 HP) Rated revolution 3200min-' (rpm) Maximum torque 56.1 N'm (5.7 kgf-m, 41.
PAGE 10
TRAVELLING SPEEDS BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRAVELLING SPEEDS BX25 Model Tire size (Rear) 26 x 12.00 Range gear shift lever Forward (At rated engine rpm) Low Reverse (At rated engine rpm) Low High High 12 km/h mile/h oto 6.0 oto 13.0 oto 4.5 oto 10.0 oto 3.7 oto 8.1 oto 2.8 oto 6.2 The company reserves the right to change the specifications without notice.
PAGE 11
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM DIMENSIONS DIMENSIONS ~ .S: lfi ~ E E l() ' E cri !:!1 E E E E 1400 mm (55.1 in.) 2170 mm (85.4 in.) 4442 mm (174.9 in.) 3TAAAAJ FPOO 1A 11 «> iE. E .
PAGE 12
PAGE 13
GENERAL CONTENTS 1. TRACTOR IDENTIFICATION ......................................................................... G-1 2. GENERAL PRECAUTIONS ............................................................................ G-2 3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING .. G-3 [1] WiRING ...................................................................................................... G-3 [2] BATTERy .............................................................................................
PAGE 14
PAGE 15
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL 1. TRACTOR IDENTIFICATION When contacting your local KUBOTA distributor, always specify engine serial number, tractor serial number and hour meter reading.
PAGE 16
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL 2. GENERAL PRECAUTIONS (1 ) (8) (A) (2) (2) (3) dop - • During disassembly, carefully arrange removed parts in a clean area to prevent confusion later. Screws, bolts and nuts should be installed in their original position to prevent reassembly errors. • When special tools are required, use KUBOTA genuine special tools. Special tools which are not frequently used should be made according to the drawings provided.
PAGE 17
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL 3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING To ensure safety and prevent damage to the machine and surrounding equipment, heed the following precautions in handling electrical parts and wiring . (1 ) • IMPORTANT • Check electrical wiring for damage and loosened connection every year. To this end, educate the customer to do his or her own check and at the same time recommend the dealer to perform periodic check for a fee.
PAGE 18
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL • Securely clamp. being careful not to damage wiring. (1) Clamp • Wind Clamp Spirally (2) Wire Harness (3) Clamp (4) Welding Dent W10114580 (4) 3TMABABOP010A (1 ) (2) • Clamp wiring so that there is no twist. unnecessary sag. or excessive tension. except for movable part. where sag be required. (1) Wiring (2) Clamp (A) Correct (8) Incorrect W10115870 (8) 3TMABABOP011A (1) (2) • In installing a part.
PAGE 19
G GENERAL BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601, WSM [2] BATTERY Take care not to confuse positive and negative terminal posts. When removing battery cables, disconnect negative cable first. When installing battery cables, check for polarity and connect positive cable first. • Do not install any battery with capacity other than is specified (Ah). • After connecting cables to battery terminal posts, apply high temperature grease to them and securely install terminal covers on them.
PAGE 20
BX25, RCK54(P)-23BX. RCK60B-23BX, LA240, BT601. WSM (3)_--_ .. ~(4) ~? G GENERAL • Use sandpaper to remove rust from terminals. • Repair deformed terminal. Make certain there is no terminal being exposed or displaced. (1) Exposed Terminal (2) Deformed Terminal (3) Sandpaper (4) Rust W10123460 (1 ) • Make certain that there is no female connector being too open.
PAGE 21
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL 4. LUBRICANTS FUEL AND COOLANT No. Place Capacity Lubricants, fuel and coolant BX25 1 Fuel tank 25.0 L 6.6 U.S.gals 5.5 Imp.gals No. 2-D diesel fuel No. 1-0 diesel fuel if temperature is below -10°C (14 OF) 2 Cooling system with recovery tank 3.1 L 3.3 U.S.qts 2.7Imp.qts Fresh clean water with anti-freeze 3 Engine crankcase 3.1 L 3.3 U.S.qts 2.7Imp.
PAGE 22
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL 5. TIGHTENING TORQUES [1] GENERAL USE SCREWS, BOLTS AND NUTS Screws, bolts, and nuts whose tightening torques are not specified in this Workshop Manual should be tightened according to the table below. Indication on top of bolt 0 @ Material of bolt Material of opponent part ~t Diameter M6 (6 mm, 0.24 in.) M8 (8 mm, 0.31 in.) M10 (10 mm, 0.39 in.) M12 (12 mm, 0.47 in.) M14 (14 mm, 0.55 in.) M16 (16 mm, 0.63 in.) M18 (18 mm, 0.71 in.
PAGE 23
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL [3] AMERICAN STANDARD SCREWS, BOLTS AND NUTS WITH UNC OR UNF THREADS Grade ~ Nominal Diameter SAEGR.5 SAEGR.8 G @ N'm kgf'm IbHt N'm kgf·m IbHt 5116 23.1 to 27.7 2.35 to 2.83 17.0 to 20.5 32.6 to 39.3 3.32 to 4.00 24.0 to 29.0 3/8 481056 4.9105.8 35.01042.0 61.1 to 73.2 6.23 to 7.46 45.01054.0 1/2 109 to 130 11.1 to 13.2 80.01096.0 149.2 to 178.9 15.21 1018.24 110.0 to 132.0 9/16 149.210178.9 15.211018.
PAGE 24
BX25, RCK54(P)-23BX. RCK60B-23BX, LA240, BT601, WSM G GENERAL 6. MAINTENANCE CHECK LIST No. Engine oil Engine oil filter Transmission oil filter Transmission fluid Clean Ie case oil G-24 Ie pivot Adjust G-25 start system G-14 * * 10 11 Battery condition {;{ 12 Air cleaner element !.~ i.~r -tt 'l':.( {;( )~ ~ "u G-15 G-15 '4 G·16 '1 G-18 {;.( ','1' " el filter element HST neutral spring * Adjust Adjust tor hose and clamp 18 19 * Power steering oil line 1:.
PAGE 25
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL 7. CHECK AND MAINTENANCE A CAUTION • Be sure to check and service the tractor on a level surface with the engine shut off and the parking brake "ON" and implement lowered to the ground. [1] DAILY CHECK To prevent trouble from occurring, it is important to know the condition of the tractor. Check the following items before starting .
PAGE 26
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL [2] CHECK POINTS OF INITIAL 50 HOURS Changing Engine Oil A • 1. 2. 3. 4. 5. • • • • • CAUTION Be sure to stop the engine before changing engine oil. Start and warm up the engine for approx. 5 minutes. Place an oil pan underneath the engine. To drain the used oil, remove the drain plug (1) at the bottom of the engine and drain the oil completely. Screw in the drain plug (1). Fill new oil up to upper line on the dipstick (3) .
PAGE 27
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Replacing Transmission Oil Filter A CAUTION • Allow engine to cool down sufficiently, oil can be hot and can burn. 1. Remove the oil filter. 2. Put a film of clean transmission oil on the rubber seal of the new filter. 3. Tighten the filter quickly until it contacts the mounting surface. Tighten filter by hand an additional 1/2 turn only. 4. After the new filter has been replaced, the transmission fluid level will decrease a little.
PAGE 28
B)(25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL [3] CHECK POINTS OF EVERY 50 HOURS Checking Engine Start System A CAUTION • Do not allow anyone near the tractor while testing. • If the tractor does not pass the test do not operate the tractor. • Preparation before testing. 1. Sit on the operator's seat. 2. Set the parking brake and stop the engine. 3. Shift the range gear shift lever (1) to "NEUTRAL" position. 4. Check the speed control pedal "NEUTRAL" position 5.
PAGE 29
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Greasing 1. Apply a small amount of multipurpose grease to the following points. (1) Battery Terminals (2) Speed Control Pedal Shaft W1015242 3T888;6;GOP005;6; Checking Wheel Mounting Screws Tightening Torque (A) A • • • 1. CAUTION Never operate tractor with a loose rim, wheel, or axle. Any time screws are loosened, retighten to specified torque. Check all screws frequently and keep them tight.
PAGE 30
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601, WSM G GENERAL [4] CHECK POINTS OF EVERY 100 HOURS Checking Battery Condition A. DANGER To avoid the possibility of battery explosion: For the refillable type battery, follow the instructions below. Do not use or charge the refillable type battery if the fluid level is below the LOWER (lower limit level) mark. Otherwise, the battery component parts may prematurely deteriorate, which may shorten the battery's service life or cause an explosion.
PAGE 31
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Checking Battery Condition (Continued) • Battery Charging (4) (3) A (5) (1)-) 3TAMABOP013A G GENERAL CAUTION • When the battery is being activated, hydrogen and oxygen gases in the battery are extremely explosive. Keep open sparks and flames away from the battery at all times, especially when charging the battery. • When charging battery, remove battery vent caps are securely in place (if equipped).
PAGE 32
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Checking Battery Condition (Continued) • Battery for storage 1. When storing the tractor for a long period, remove the battery from tractor, adjust the electrolyte to the proper level and store in a dry place out of direct sunlight. 2. The battery self-discharges while it is stored. Recharge it once every three months in hot seasons and once every six months in cold seasons. 3. (For non-accessible maintenance-free type batteries.
PAGE 33
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Checking Fuel Lines and Fuel Filter Element A CAUTION • Stop the engine and remove the key before checking fuel lines and fuel filter. • Check the fuel lines periodically. The fuel lines are subject to wear and aging. Fuel may leak out onto the running engine, causing a fire. The fuel line connections should be checked annually or every 100 service hours, whichever occurs first. 1.
PAGE 34
G GENERAL BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Checking Fan Belt Tension A • 1. 2. 3. 4. CAUTION Be sure to stop engine and remove the key before checking belt tension. Stop the engine and remove the key. Apply moderate thumb pressure to belt between pulleys. If tension is incorrect, loosen the alternator mounting bolts and using a lever placed between the alternator and the engine block, pull the alternator out until the deflection of the belt falls within acceptable limits.
PAGE 35
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Checking and Adjusting HST Neutral Spring (for Dynamic Braking) A WARNING • Do not operate if tractor move on level ground with foot off speed control pedal. • If tractor moves on level ground with foot off the pedal, or, if the pedal is too slow in returning to "NEUTRAL" position when removing the foot from the pedal, adjust the HST neutral spring.
PAGE 36
G GENERAL BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Adjusting Brake Pedal Free Travel A • • IF 3TAAAAGOP010A 1. 2. 3. 4. 5. CAUTION Stop the engine, remove the key, lower the implement to the ground, and chock the wheels before checking brake pedal. Even if the brake pedal free travel is within the limitation, adjust the brake pedal following the procedure below. Release the parking brake.
PAGE 37
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Checking Power Steering Line A CAUTION • Be sure to stop the engine and remove the key before checking power steering line. 1. Check to see that all lines are tight and not damaged. 2. If hoses are found to be worn or damaged, replace or repair them at once. (1) Power Steering Hose W1018751 Checking Intake Air Line 1. Check to see that hose and hose clamps are tight and not damaged. 2.
PAGE 38
BX25, RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM G GENERAL [6] CHECK POINTS OF EVERY 400 HOURS Changing Transmission Fluid 1. See page G-13. W1019295 Cleaning Transmission Oil Strainer 1. When changing the transmission fluid, disassemble and rinse the strainer with nonflammable solvent to completely clean off fillings. 2. When reassembling, be careful not to damage the parts .
PAGE 39
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM u G GENERAL Adjusting Front Axle Pivot 1. Remove the split pin (2), tighten the adjusting nut (1). 2. Make sure that one of the nut slots aligns with the split pin hole, tighten the nut slightly if necessary to align. 3. Replace the split pin. lightening torque (1) Adjusting Nut 20N'm 2.0 kgf·m 15 ft-Ibs Factory spec. (2) Split Pin 3TAAAAGOP017A W1019713 [7] CHECK POINT OF EVERY 500 HOURS Replacing Fuel Filter Element 1.
PAGE 40
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL [8] CHECK POINT OF EVERY 800 HOURS Adjusting Engine Valve Clearance 1. See page 1-S13. W1019995 [9] CHECK POINT OF EVERY 1500 HOURS Checking Fuel Injection Nozzle Injection Pressure 1. See page 1-S20. W1020203 [10] CHECK POINT OF EVERY 3000 HOURS Checking Injection Pump 1. See page 1-S 19. W1020260 [11] CHECK POINT OF EVERY 1 YEAR Replacing Air Cleaner Element 1. See page G-18.
PAGE 41
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Flushing Cooling System and Changing Coolant A CAUTION • Be sure to stop the engine and remove the key before checking coolant level. • Do not remove the radiator cap when the engine is hot. Then loosen cap slightly to the stop to relieve any excess pressure before removing cap completely. 1. Stop the engine, remove the key and let cool down. 2. To drain the coolant, open the radiator drain plug, and remove radiator cap.
PAGE 42
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Flushing Cooling system and Changing Coolant (Continued) • Anti-Freeze A CAUTION • When using antifreeze, put on some protection such as rubber gloves (Antifreeze contains position.). • If should drink antifreeze, throw up at once and take medical attention. • When antifreeze comes in contact with the skin or clothing, wash it off immediately. • Do not mix different types of Antifreeze.
PAGE 43
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Flushing Cooling system and Changing Coolant (Continued) 5. Adding the LLC. - Add only water if the mixture reduces in amount by evaporation. - If there is a mixture leak, add the LLC of the same manufacture and type in the same mixture percentage. * Never add any long-life coolant of different manufacture. (Different brands may have different additive components, and the engine may fail to perform as specified.) 6.
PAGE 44
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL [13] OTHERS Bleeding Fuel System Air must removed: 1. When the fuel filter (2) or lines are removed. 2. When tank is completely empty. 3. After the tractor has not been used for a long period of time . • Bleeding procedure is as follows: 1. Fill the fuel tank with fuel. 2. Tum the key switch to "ON" position for about 30 seconds. Doing so allows fuel pump (1) to work and pump air out of the fuel system. 3.
PAGE 45
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Replacing Fuse 1. The tractor electrical system is protected from potential damage by fuses. A blown fuse indicates that there is an overload or short somewhere in the electrical system. 2. If any of the fuses should blow, replace with a new one of the same capacity . • IMPORTANT • Before replacing a blown fuse, determine why the fuse blew and make any necessary repairs.
PAGE 46
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL 8. SPECIAL TOOLS [1] SPECIAL TOOLS FOR ENGINE Special Use Puller Set Code No.: 07916-09032 Application: Use exclusively for pulling out bearing, gears and other parts with ease. W1024050 Piston Ring Compressor Code No.: 07909-32111 Application: Use exclusively for pushing in the piston with piston rings into the cylinder. W1024100 3TMABABOP050A Piston Ring Tool Code No.
PAGE 47
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Diesel Engine Compression Tester (for Glow Plug) Code No.: 07909-39081 (Assembly) 07909-31301 (L) 07909-31291 (K) 07909-31311 (M) Application: Use to measure diesel engine compression and diagnostics of need for major overhaul. (1) Gauge (2) L Joint (3) Adaptor K (3)~ ~ (5)~ (4) _. (4) Adaptor L (5) Adaptor M 0000001398E ~(2) 3EEACAA 1P063A ~ • (4) (5) (6) @ (2) (3) ~ © ~ (1 ) ~ @ @ (7) ~ Oil Pressure Tester Code No.
PAGE 48
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Nozzle Tester Code No.: 07909-31361 Application: Use to check the fuel injection pressure and spray pattern of nozzle. Measuring: 0 to 50 MPa (0 to 500 kgf/cm 2 , 0 to 7000 psi) range W1024653 3TLABAB1 P041A Plastigage Code No.: 07909-30241 Application: Use to check the oil clearance between crankshaft and bearing, etc .. Measuring: Green 0.025 to 0.076 mm (0.001 to 0.003 in.) Red 0.051 to 0.152 mm (0.002 to 0.006 in.) range BlueO.102 to 0.
PAGE 49
BX25, RCK54{P)-23BX, RCK60B-23BX, LA240, BT601, WSM D • E F Valve Guide Replacing Tool Application: Use to press out and press fit the valve guide . • vv C2 CO.3 C1 B A G GENERAL C1 C 3TMABABOP063A A 20 mm dia. (0.79 in. dia.) B 9.96 to 9.98 mm dia. (0.3921 to 0.3929 in. dia.) C 5.5 to 5.7 mm dia. (0.2165 to 0.2244 in. dia.) D 220 mm (8.66 in.) E 80 mm (3.15 in.) F 40 mm (1.58 in.) G 25 mm dia. (0.98 in. dia.) H 5 mm (0.197 in.) 6.0 to 6.1 mm dia. (0.236 to 0.240 in. dia.
PAGE 50
B)(25. RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Flywheel Stopper Application: Use to loosen and tighten the flywheel screw. E~-+~~---------------4 A 200 mm (7.87 in.) B 30 mm (1.18 in.) C ~mm (0.79 in.) 0 15 mm (0.59 in.) E 8 mm (0.31 in.) F 10 mm dia. (0.39 in. dia.) 3TMABABOP067D W1472583 Crankshaft Bearing 1 Replacing Tool A D E C Application: Use to press out and press fit the crankshaft bearing 1. [Press Out] A H C2 3GFABABOP041 B C1 CO.3 C1 135 mm (5.31 in.
PAGE 51
G GENERAL BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM [2] SPECIAL TOOLS FOR TRACTOR Tie-rod End Lifter Code No.: 07909-39051 Application: Use for removing the tie-rod end with ease. W1026472 3TMABABOP071 A (1 ) (2) (3) (5) (6) (7) ~ ~ ~ l (8) J Relief Valve Pressure Tester Code No.: 07916-50045 Application: This allows easy measurement of relief set pressure.
PAGE 52
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Independant PTO Clutch Spring Compression Tool Application: Use for compressing the spring into the spline boss. This tool can be used for B30 series, BX50 series and BX25 tractor. A J A 12 mm (0.47 in.) B 25.4 mm (1.00 in.) C 19 mm radius (0.75 in.) Hex. ~7 mm (0.11 in.) E E A F 3TBAAAGOP034A K ------ J 0 M mm (0.31 in.) 15 mm dia. (0.59 in. dia.) G 37 mm (1.46 in.) H 70 mm (2.76 in.) I M14 x1.5 J R 3 mm (0.12 in.
PAGE 53
BX25, RCK54(P)-23BX, RCK606-236X, LA240, 6T601, WSM G GENERAL Disassembling and Assembling Stand (1/2) A B D E , I, F G I H -$ J K U L M P 0 W Q~~------------------------~I----------------------~ R 3TAAAAGOP023A Application: Use to disassembling transaxle assembly and to assembling transaxle assembly. A $ 9 mm ($ 0.35 in.) 3 Holes L 30.5 to 31.5 mm (1.21 to 1.24 in.) B 225 mm (8.86 in.) M 226 mm (8.90 in.) C $ 13 mm ($ 0.51 in.) 3 Holes N 125.5 to 126.5 mm (4.95 to 4.98 in.
PAGE 54
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL Disassembling and Assembling Stand (2/2) J r----Kl -- I B C! ! V I I I I E D A f----- I • I I . 0 F I I i I I ! I B Cl I G H I i I I I I I N-..... "' p ~--+4>------$at Ii W .II ~ I S I I I I I I I I I U T 3TAAAAGOP024A Application: Use to disassembling transaxle assembly and to assembling transaxle assembly. A 311 mm (12.24 in.) L B 40 mm (1.57 in.) M 1.9 mm (0.07 in.) C 38.1 mm (1.50 in.
PAGE 55
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL [3] SPECIAL TOOLS FOR FRONT LOADER (a) Sliding Jig and Correcting Jig Application: Use to install the O-mig and the piston seal. A B Boom Cylinder (40 mm (1.57 in.) A C 0 ....f E G 3UFAAACLP035A (b) - ~ 80 " 0.157 rad 9° 80 " 0.157 rad 9° C 40.18 mm dia. 1.582 in. dia. 65.18 mm dia. 2.566 in. dia. D 41.18 mm dia. 1.621 in. dia. 66.18 mm dia. 2.606 in. dia. E 42.0 mm 1.65 in. 42.0mm 1.65 in. B ~J • L 10.0mm 0.4 in.
PAGE 56
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL [4] SPECIAL TOOLS FOR BACKHOE (a) Sliding Jig and Correcting Jig Application: Use to install the O-rnig and the piston seal. A B C D E G 3UFAAACLP035A (b) K ~J t-!i3UFAAACLP036A I Boom Cylinder Dipperstick. Swing, Stabilizer Cylinder Bucket Cylinder A 80..,! 80..,! 80..,! B 0.157 rad. 9° 0.157 rad. 9° 0.157 rad. 9° C 65.18 mm 2.57 in. 60.18 mm 2.37 in. 50.18 mm 1.98 in. D 66.18 mm 2.61 in. 61.18mm 2.41 in. 51.
PAGE 57
G GENERAL BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM 9. TIRES [1] TIRE PRESSURE A WARNING • Do not attempt to mount a tire on a rim. This should be done by a qualified person with the proper equipment. • Always maintain the correct tire pressure. Do not inflate tires above the recommended pressure shown in the operator's manual. • IMPORTANT • Do not use tires larger than specified.
PAGE 58
G GENERAL BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM [2] WHEEL TREAD The tread can not be adjusted . • IMPORTANT • • • • • Do not turn discs to obtain wider tread. Always attach tires as shown in the drawing. If not attached as illustrated, transmission parts may be damaged. When re-fitting or adjusting a wheel, tighten the bolts to the following torques then recheck after driving the tractor 200 m or 200 yards and thereafter daily check service .
PAGE 59
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM G GENERAL [3] BALLAST (1) Front Ballast Add weights needed for stability and improve traction. Heavy pulling and heavy rear mounted implements tend to lift front wheels. Add enough ballast to maintain steering control and prevent tip over. Remove weight when no longer needed. Front End Weights (Option) 1. The front end weights can be attached to the bumper. See your implement operator's manual for required number of weights .
PAGE 60
BX25, RCK54{P)-23BX, RCK60B-23BX, LA240, 8T601, WSM G GENERAL (2) Rear Ballast Add weights to rear wheels if needed to improve traction or for stability The amount of rear ballast should be matched to job and the ballast should be remove when it is not needed. The weight should be added to the tractor in the form of liquid ballast. (A) (8) 3TMABABOP107B Liquid Ballast in Rear Tires 1. Water and calcium chloride solution provides safe economical ballast.
PAGE 61
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, 6T601, WSM G GENERAL 10.IMPLEMENT LIMITATIONS The KUBOTA Tractor has been thoroughly tested for proper performance with implements sold or approved by KUBOTA. Use with implements which exceed the maximum specifications listed below, or which are otherwise unfit for use with the KUBOTA Tractor may result in malfunctions or failures of the tractor, damage to other property and injury to the operator or others.
PAGE 62
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM Implement G GENERAL Remarks BX25 Max. Digging Depth Backhoe* 1840 mm (6 ft.) Max. Weight Front-end Loader u 262 kg (578Ibs) without Bucket Max. Lifting Capacity 210 kg (460 Ibs) Max. Width 1220 mm (48 in.) Sub frame Necessary Max. Cutting Width 1520 mm (60 in.) Max.Weight 115 kg (254 Ibs) Max. Cutting Width 1070 mm (42 in.) Max.Weight 140 kg (300 Ibs) Rear-Mount (2 or 3 Blade) Max. Cutting Width 1520 mm (60 in.) Max.
PAGE 63
MECHANISM CONTENTS 1. LUBRICATING SYSTEM .............................................................................. 1-M1 2. COOLING SySTEM ...................................................................................... 1-M2 3. FUEL SYSTEM .............................................................................................
PAGE 64
PAGE 65
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE 1.
PAGE 66
BX25. RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE 2. COOLING SYSTEM (1) (2) (3) (4) (5) (6) Radiator Water Pump Cooling Fan Thermostat Cylinder Head Cylinder Head (1 ) (2) (3) 3TAAAAE1 P003A The cooling system consists of a radiator (1). a centrifugal water pump (2). a cooling fan (3) and a thermostat (4). The coolant is cooled through the radiator core. and the cooling fan (3) set behind the radiator (1) pulls cooling air through the radiator core to improve cooling.
PAGE 67
BX25, RCK54(P)-23BX. RCK60B-23BX. LA240. BT601, WSM ENGINE 3. FUEL SYSTEM (1) (2) (3) (4) (5) (6) (7) (8) (1 ) (8) Injection Nozzle Fuel Overflow Pipe Fuel Tank Fuel Filter Fuel Feed Pump Fuel Filter Injection Pump Injection Pipe (7) (6) (3) 3TAAAAF1 P013A (5) (4) Fuel from the fuel tank (3) passes through the fuel filter (4), and then enters the injection pump (7) after impurities such as dirt, water, etc. are removed. The fuel pressurized by the injection pump to the opening pressure (13.
PAGE 68
PAGE 69
SERVICING CONTENTS 1. 2. 3. 4. TROUBLESHOOTING .................................................................................... 1-S1 SERVICING SPECIFICATIONS .................................................................... 1-S4 TIGHTENING TORQUES ............................................................................ 1-S10 CHECKING. DISASSEMBLING AND SERVICING .................................... 1-S11 [1] CHECKING AND ADJUSTING .............................................................
PAGE 70
PAGE 71
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE 1.
PAGE 72
BX25. RCK54(P)-23BX.
PAGE 73
BX25, RCK54(P}-23BX, RCK60B-23BX, LA240, BT601, WSM Symptom Low Oil Pressure High Oil Pressure Engine Overheated ENGINE Probable Cause Solution Reference Page Engine oil insufficient Replenish Oil strainer clogged Clean 1-S29 Oil filter clogged Replace G-12 Relief valve stuck with dirt Clean Relief valve spring weaken or broken Replace 1-S14 Excessive oil clearance of crankshaft bearing Replace 1-S55 to S58 Excessive oil clearance of crankpin bearing Replace 1-S53 Excessive oil cl
PAGE 74
BX25. RCK54(P)-23BX, RCK60B-23BX. LA240. BT601, WSM ENGINE 2. SERVICING SPECIFICATIONS ENGINE BODY Item Compression Pressure Factory Specification Allowable Limit 3.53 to 4.02 MPa 36.0 to 41.0 kgf/cm 2 512 to 583 psi 2.55 MPa 26.0 kgf/cm 2 370 psi Difference among Cylinders 10 % or less Top Clearance 0.50 to 0.70 mm 0.0197 to 0.0276 in. Valve Clearance (Cold) 0.145 to 0.185 mm 0.00571 to 0.00728 in. - Cylinder Head Surface Flatness 0.05 mm 0.0020 in. Valve Recessing Intake and Exhaust -0.
PAGE 75
BX25. RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE ENGINE BODY (Continued) Item Factory Specification Allowable Limit Clearance 0.016 to 0.045 mm 0.00063 to 0.00177 in. 0.15 mm 0.0059 in. Rocker Arm Shaft 0.0. 10.473 to 10.484 mm 0.41232 to 0.41276 in. - Rocker Arm 1.0. 10.500 to 10.518 mm 0.41339 to 0.41410 in. - - 0.25 mm 0.0098 in. 0.10 mm 0.0039 in. Rocker Arm Shaft to Rocker Arm Push Rod Alignment Tappet to Tappet Guide Oil Clearance 0.016 to 0.052 mm 0.00063 to 0.
PAGE 76
BX25. RCK54(P)-23BX. RCK60B-23BX, LA240. BT601, WSM ENGINE ENGINE BODY (Continued) Item Factory Specification Allowable Limit Oil Clearance 0.020 to 0.084 mm 0.00079 to 0.00331 in. 0.10 mm 0.0039 in. Idle Gear Shaft 0.0. 19.967 to 19.980 mm 0.78610 to 0.78661 in. - Idle Gear Bushing 1.0. 20.000 to 20.051 mm 0.78740 to 0.78941 in. Piston Pin Bore 1.0. 20.000 to 20.013 mm 0.78740 to 0.78791 in. 20.05 mm 0.7894 in. Piston Pin to Small End Bushing Clearance 0.014 to 0.038 mm 0.00055 to 0.
PAGE 77
BX25, RCK54(P)-23BX, RCK608-23BX, LA240, 8T601, WSM ENGINE ENGINE BODY (Continued) Item Factory Specification Allowable Limit Oil Clearance 0.020 to 0.051 mm 0.00079 to 0.00201 in. 0.15 mm 0.0059 in. Crankpin 0.0. 33.959 to 33.975 mm 1.33697 to 1.33760 in. - Crankpin Bearing 1.0. 33.995 to 34.010 mm 1.33839 to 1.33898 in. - Oil Clearance 0.034 to 0.106 mm 0.00134 to 0.00417 in. 0.20 mm 0.0079 in. Crankshaft Journal 0.0. 43.934 to 43.950 mm 1.72968 to 1.73031 in.
PAGE 78
BX25. RCK54{P)-23BX, RCK60B-23BX, LA240, BT60i. WSM ENGINE LUBRICATING SYSTEM Engine Oil Pressure At Idle Speed More than 49 kPa 0.5 kgf/cm 2 7 psi At Rated Speed 196 to 441 kPa 2.0 to 4.5 kgf/cm 2 28 to 64 psi 147 kPa 1.5 kgf/cm 2 21 psi 32mm 1.26 in. 28mm 1.10 in. - Relief Valve Spring Free Length Inner Rotor to Outer Rotor Clearance 0.03 to 0.14 mm 0.0012 to 0.0055 in. Outer Rotor to Pump Body Clearance 0.07 to 0.15 mm 0.0028 to 0.0059 in. Inner Rotor to Cover Clearance 0.075 to 0.
PAGE 79
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601. WSM ENGINE FUEL SYSTEM Item Factory Specification Allowable Limit Injection Pump Injection Timing - 0.30 to 0.33 rad (17 to 19°) before T.D.C. Pump Element Fuel Tightness - 13.7 MPa 140 kgf/cm 2 1991 psi Delivery Valve Fuel Tightness 10 seconds 13.7 ~ 12.8 MPa 140 ~ 130 kgf/cm 2 1991 ~ 1849 psi 5 seconds 13.7 ~ 12.8 MPa 140 ~ 130 kgf/cm 2 1991 ~ 1849 psi Injection Nozzle Injection Pressure 13.7 to 14.
PAGE 80
BX25. RCK54(P)-23BX, RCK60B-23BX, LA240, BT601. WSM ENGINE 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (Tractor section for general use screws, bolts and nuts: See page G-8.) Tractor Section Item Front coupling mounting bolt Engine mounting nut Cushion mounting nut N'm kgf·m ft-Ibs 23.6 to 27.4 23.6 to 27.4 23.6 to 27.4 2.4 to 2.8 2.4 to 2.8 2.4 to 2.8 17.4 to 20.2 17.4 to 20.2 17.4 to 20.
PAGE 81
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING (1) Engine Body Compression Pressure (by Glow Plug Hole Adaptor Setting) 1. Run the engine until it is warmed up. 2. Stop the engine. 3. Remove the air cleaner, the muffler, the breather tube, the head cover and all glow plugs. 4. Set a compression tester (Code No. 07909~30208) with the adaptor (Adaptor L, code No. 07909~31301) to the glow plug hole. 5.
PAGE 82
ENGINE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (1 ) 3TMABAB1 P023B Top Clearance 1. Remove the cylinder head. (Do not attempt to remove the cylinder head gasket.) 2. Move the piston up and stick a strip of fuse [1.5 mm dia. (0.059 in. dia.), 5 to 7 mm long (0.197 to 0.276 in. long)] on the piston head at three positions with grease so as to avoid the intake and exhaust valves and the combustion chamber ports. 3.
PAGE 83
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Checking Valve Clearance • IMPORTANT • Valve clearance must be checked and adjusted when engine is cold. 1. Remove the cylinder head cover and the glow plugs. 2. Align the "1TC" mark (1) on the flywheel and alignment mark (2) on the rear end plate so that the No. 1 piston comes to the compression top dead center. 3. Check the following valve clearance marked with "*~ using a feeler gauge. 4.
PAGE 84
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM ENGINE (2) Lubricating System Engine Oil Pressure 1. Remove the engine oil pressure switch, and set an oil pressure tester. (Code No. : 07916-32032.) 2. Start the engine. After warming up, measure the oil pressure of both idling and rated speeds. 3. If the oil pressure is less than the allowable limit, check the following.
PAGE 85
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE (3) Cooling System Fan Belt Tension 1. Measure the deflection (A), depressing the belt halfway between the fan drive pulley and alternator pulley at specified force 98 N (10 kgf, 22Ibs). 2. If the measurement is not within the factory specifications, loosen the alternator mounting screws and relocate the alternator to adjust. Deflection (A) 7.0 to 9.0 mm 0.28 to 0.35 in. Factory spec.
PAGE 86
ENGINE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Radiator Water Leakage 1. Pour a specified amount of water into the radiator. 2. Set a radiator tester (1) and an adapter (2) and raise the water pressure to the specified pressure. 3. Check the radiator for water leaks. 4. For water leak from the pinhole, repair with the radiator cement. When water leak is excessive, replace the radiator. Radiator water leakage test pressure (1) Adaptor Factory spec. 157 kPa 1.
PAGE 87
BX25, RCK54(P}-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE (4) Fuel System Injection Timing 1. Remove the injection pipes. 2. Remove the engine stop solenoid. 3. Turn the flywheel counterclockwise (viewed from flywheel side) until the fuel fills up to the hole of the delivery valve holder (3) for No. 1 cylinder. 4. After the fuel fills up to the hole of the delivery valve holder for No. 1 cylinder, turn back (clockwise) the flywheel around 1.57 rad (90 0). 5.
PAGE 88
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Injection Timing (Continued) • NOTE • The sealant is applied to both sides of the shims (soft metal gasket shim). The liquid gasket is not required for assembling. • Shims are available in thickness of 0.20 mm (0.0079 in.), 0.25 mm (0.0098 in.) and 0.30 mm (0.0118 in.). Combine these shims for adjustments. • Addition or reduction of shim (0.05 mm, 0.0020 in.) delays or advances the injection timing by approx. 0.0087 rad (0.5°).
PAGE 89
BX25, RCK54(Pj-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Fuel Tightness of Pump Element 1. Remove the engine stop solenoid. 2. Remove the injection pipes and glow plugs. 3. Install the injection pump pressure tester to the injection pump. 4. Install the injection nozzle (1) jetted with the proper injection pressure to the injection pump pressure tester (2). (Refer to the photo.) 5. Set the speed control lever to the maximum speed position. 6. Run the starter to increase the pressure. 7.
PAGE 90
ENGINE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM A CAUTION • Check the nozzle injection pressure and condition after confirming that there is nobody standing in the direction the fume goes. • If the fume from the nozzle directly contacts the human body, cells may be destroyed and blood poisoning may be caused. (a) Nozzle Spraying Condition 1. Set the injection nozzle to a nozzle tester, and check the nozzle spraying condition. 2.
PAGE 91
ENGINE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ~(2) 1==::: ~(5) Nozzle Holder 1. Secure the nozzle retaining nut (7) with a vise. 2. Remove the nozzle holder (1), and take out parts inside. (When reassembling) • Assemble the nozzle in clean fuel oil. • Install the push rod (4). noting its direction. • After assembling the nozzle, be sure to adjust the fuel injection pressure. (1 ) (6) Nozzle holder 34.3 to 39.2 N'm 3.5 to 4.0 kgf'm 25.3 to 28.9 ft-Ibs Overflow pipe retaining nut 19.
PAGE 92
BX25, RCK54(P)-23BX. RCK60B-23BX. LA240. BT601, WSM ENGINE [2] DISASSEMBLING AND ASSEMBLING • Before proceeding this section, disassembling the loader assembling and backhoe. (Refer to section 8 and 9.) (1) Separating Engine Draining Engine Oil 1. Start and warm up the engine for approx. 5 minutes. 2. Place an oil pan underneath the engine. 3. Remove the drain plug (1) to d rain oil. 4. After draining, screw in the drain plug (1).
PAGE 93
BX25, RCK54(P)-23BX. RCK60B-23BX, LA240, BT601, WSM ENGINE Bonnet and Under Cover 1. Remove the front guard (1). 2. Open the bonnet (2), and then loosen the knob bolts and pull forward to remove the under cover (3). 3. Disconnect the connectors (4) for head light and remove the bonnet bracket (5) with bonnet. (1) Front Guard (2) Bonnet (3) Under Cover (4) Connector (5) Bonnet Bracket W1032046 Accelerator Wire, Bonnet Post, Fuel Hoses, Wiring Harness and Others 1.
PAGE 94
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Engine Assembly 1. 2. 3. 4. Disconnect the ground cable. Disconnect the front coupling (1). Remove the engine mounting nuts (3). Hook the engine and separate the engine assembly with the radiator from the frame. (When reassembling) nghtening torque Front coupling mounting bolt 23.6 to 27.4 N'm 2.4 to 2.8 kgf-m 17.4 to 20.2 ft-Ibs Engine mounting nut 23.6 to 27.4 N'm 2.4 to 2.8 kgf·m 17.4 to 20.2 ft-Ibs Cushion mounting nut 23.6 to 27.
PAGE 95
BX25, RCK54(P}-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE (2) Removing Outer Parts Draining Coolant, Radiator, Air Cleaner and Muffler etc. A (3) (1 ) 3TAMAF1P012A CAUTION • Never open the radiator cap while operating or immediately after stopping. Otherwise, hot water will spout out from the radiator. Wait for more than ten minutes to cool the radiator, before opening the cap 1. Set the engine stands (9) to the crankcase. 2.
PAGE 96
ENGINE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Nozzle Holder Assembly and Glow Plug 1. 2. 3. 4. 5. Remove the overflow pipe (1). Remove the nozzle holder assemblies (2). Remove the copper gasket (5) and heat seal (6). Remove the lead (3) from the glow plugs (4). Remove the glow plugs (4). (When reassembling) • Replace the copper gasket and heat seal with new one. Tightening torque Overflow pipe retaining nut 19.6 to 24.5 N'm 2.0 to 2.5 kgf'm 14.5 to 18.
PAGE 97
ENGINE BX25. RCK54(P)-23BX. RCK60B-23BX, LA240. BT601, WSM Rocker Arm and Push Rod 1. Remove the rocker arm bracket screws (1). 2. Detach the rocker arm assembly (2). 3. Remove the push rods (3). (When reassembling) • When putting the push rods (3) onto the tappets (4), check to see if their ends are property engaged with the dimples . • IMPORTANT • After installing the rocker arm, be sure to adjust the valve clearance.
PAGE 98
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Thermostat Assembly 1. Remove the thermostat cover mounting screws (1), and remove the thermostat cover (2). 2. Remove the thermostat assembly (4). (When reassembling) • Apply a liquid gasket (Three Bond 1215 or equivalent) only at the thermostat cover side of the gasket (3). (1) (1) Thermostat Cover Mounting Screw (2) Thermostat Cover (3) Thermostat Cover Gasket (4) Thenmostat Assembly Wi 0363950 (1) Tappets 1.
PAGE 99
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (4) ~151 ENGINE Oil Pan and Oil Strainer 1. Remove the oil pan mounting screws (1). 2. Remove the oil pan (2) by lightly tapping the rim of the pan with a wooden hammer. 3. Remove the oil strainer (3). (When reassembling) • After cleaning the oil strainer, check to see that the filter mesh in clean, and install it. • Visually check the O-ring (4), apply engine oil, and install it. • Securely fit the O-ring to the oil strainer.
PAGE 100
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE (4) Gear Case and Timing Gears Injection Pump, Fuel Feed Pump and Speed Control Plate (for Energize to Run Type Engine Stop Solenoid) (1 ) 3EEADAA 1P014A ~ • NOTE • Specific tool (1) : 1.2 mm diameter hard wire with its end hooked, overall length 200 mm (7.87 in.). The tip of wire is bent like the hook to hang governor springs. 1. Remove the socket head screws (2). and remove the engine stop solenoid (4). 2.
PAGE 101
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Injection Pump, Fuel Feed Pump and Speed Control Plate (for Energize to Run Type Engine Stop Solenoid) (Continued) (When reassembling) 1. Move the fork lever (1) to the gear case side. 2. Hook the start spring (7) to the injection pump control rack pin (5). 3. Put the specific tool (8) through the fork lever hole of cylinder block (9) and hook the start spring (7). 4. Keep this spring slightly extended and install the injection pump (4).
PAGE 102
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM (1) 3TAAAAB1P045A ENGINE Fan Drive Pulley 1. Secure the flywheel to keep it from turning. 2. Remove the fan drive pulley screw. 3. Draw out the fan drive pulley with a puller. (When reassembling) • Install the pulley to crankshaft, aligning the mark (1) on them. • Apply engine oil to the fan drive pulley retaining screws. And tighten them. Tightening torque Fan drive pulley screw 117.7 to 127.5 N'm 12.0 to 13.0 kgf·m 86.8 to 94.
PAGE 103
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ~ ~ 80 1 ( 'lc-'------""-_.... ENGINE Gear Case 1. Remove the screw (1 ) of inside the gear case and outside screws (6). 2. Disconnect the start spring (2) from the fork lever 1. 3. Remove the gear case (4). (When reassembling) • Apply a liquid gasket (Three Bond 1215 or equivalent) to both sides of the gear case gasket (4). • Be sure to set three O-rings (5) inside the gear case.
PAGE 104
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Idle Gear 1. Remove the external snap ring (3), the collar (2) and the idle gear (1 ). 2. Remove the idle gear shaft mounting screws (4). 3. Remove the idle gear shaft (5). (When reassembling) • Apply engine oil to the idle gear shaft mounting screw (4). And tighten them. • Install the idle gear, aligning the mark (6) on the gears referring to the photo.
PAGE 105
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240. BT601. WSM ENGINE Fuel Camshaft 1. Remove the retaining plate (1). 2. Remove the fork lever holder mounting screws (8), then draw out the injection pump gear (3) and fuel camshaft (2) with the governor fork assembly. (When reassembling) • Hook the governor spring (7) to the fork lever 2 (6) as shown in the figure before installing the fork lever assembly to the crankcase.
PAGE 106
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Piston 1. Turn the flywheel and bring the piston to top dead center. 2. Draw out the piston upward by lightly tapping it from the bottom of the crankcase with the grip of a hammer. 3. Draw out the other pistons after the same method as above. (When reassembling) • Before inserting the piston into the cylinder, apply enough engine oil to the cylinder.
PAGE 107
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, 8T601, WSM ENGINE Piston Ring and Connecting Rod 1. Remove the piston rings using a piston ring tool. 2. Remove the piston pin (7), and separate the connecting rod (6) from the piston (5). (When reassembling) When installing the ring, assemble the rings so that the manufacturer's mark (12) near the gap faces the top of the piston. • When installing the oil ring onto the piston, place the expander joint (10) on the opposite side of the oil ring gap (11).
PAGE 108
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE (6) Flywheel and Crankshaft Flywheel 1. Secure the flywheel to keep it from turning using a flywheel stopper. (Refer to "SPECIAL TOOLS".) 2. Remove all flywheel screws (1) and then remove the flywheel (2). (When reassembling) • Align the "1TC" mark (a) on the outer surface of the flywheel horizontally with the alignment mark (b) on the rear end plate. Now fit the flywheel in position.
PAGE 109
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (1 ) ENGINE Crankshaft Assembly 1. Remove the main bearing case screw 2 (1). 2. Turn the crankshaft to set the crankpin of the third cylinder to the bottom dead center. Then draw out the crankshaft until the crankpin of the second cylinder comes to the center of the third cylinder. 3. Turn the crankshaft by 2.09 rad (120 0) counterclockwise to set the crankpin of the second cylinder to the bottom dead center.
PAGE 110
ENGINE BX25. RCK54(P).23BX. RCK60B·23BX. LA240. BT601, WSM (9) 3EEACAA 1P08l A (3) (6) (7) (5) (8) 3EEACAA 1 P082A Main Bearing Case Assembly 1. Remove the two main bearing case screws 1 (9), and remove the main bearing case assembly 1 (1), being careful with crankshaft bearing 3 (4) (5). 2. Remove the main bearing case assembly 2 (2) and the main bearing case assembly (3) as above. Keep in mind, however, that the thrust bearing (8) is installed in the main bearing case assembly (3).
PAGE 111
ENGINE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (7) Injection Nozzle Nozzle Holder 1. Secure the nozzle retaining nut (7) with a vise. 2. Remove the nozzle holder (1), and take out parts inside. (When reassembling) • Assemble the nozzle in clean fuel oil. • Install the push rod (4), noting its direction. • After assembling the nozzle, be sure to adjust the fuel injection pressure.
PAGE 112
ENGINE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM [3] SERVICING (1) Cylinder Head and Valves Cylinder Head Surface Flatness 1. Clean the cylinder head surface. 2. Place a straightedge on the cylinder head's four sides and two diagonal as shown in the figure. 3. Measure the clearance with a thickness gauge. 4. If the measurement exceeds the allowable limit, correct it with a su rface grinder. • 3TMABAB1 P056A IMPORTANT • Do not place the straightedge on the combustion chamber.
PAGE 113
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Valve Recessing 1. Clean the cylinder head surface, valve face and valve seat. 2. Insert the valve into the valve guide. 3. Measure the valve recessing with a depth gauge. 4. If the measurement exceeds the allowable limit, replace the valve. 5. If it still exceeds the allowable limit after replacing the valve, replace the cylinder head. I fi~ 3TMABAB1 P057A (1 ) (1 ) Factory spec. 0.10 (protrusion) to 0.10 (recessing) mm 0.
PAGE 114
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Replacing Valve Guide (When removing) 1. Press out the used valve guide using a valve guide replacing tool. (Refer to "SPECIAL TOOLS".) (When installing) 1. Clean a new valve guide and valve guide bore, and apply engine oil to them. 2. Press in a new valve guide using a valve guide replacing tool. 3. Ream precisely the 1.0. of the valve guide to the specified dimension. Valve guide 1.0. (Intake and exhaust) Factory spec. 6.010 to 6.025 mm 0.
PAGE 115
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Correcting Valve and Valve Seat • NOTE • Before correcting the valve and seat, check the valve stem and the I.D. of valve guide section, and repair them if necessary. • After correcting the valve seat, be sure to check the valve recessing. 1) Correcting Valve 1. Correct the valve with a valve seat cutter. 3EEABAB 1P118A Valve face angle (C)t~~u 3EEABAB 1P119B (A) (8) (C) ~ r---- ".:">.,~ ...,.•.. :.'.,'." "\ ......
PAGE 116
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM e1 (B) !El(A) ENGINE Free Length and Tilt of Valve Spring 1. Measure the free length (A) of valve spring with vernier calipers. If the measurement is less than the allowable limit, replace it. 2. Put the valve spring on a surface plate, place a square on the side of the valve spring. 3. Check to see if the entire side is in contact with the square. Rotate the valve spring and measure the maximum tilt (8).
PAGE 117
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Push Rod Alignment 1. Place the push rod on V blocks. 2. Measure the push rod alignment. 3. If the measurement exceeds the allowable limit, replace the push rod. Push rod alignment Allowable limit 0.25mm 0.0098 in. W11220210 i 3TMABAB1 P062A Oil Clearance between Tappet and Tappet Guide Bore 1. Measure the tappet 0.0. with an outside micrometer. 2. Measure the 1.0.
PAGE 118
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Idle Gear Side Clearance 1. Set a dial indicator with its tip on the idle gear. 2. Measure the side clearance by moving the idle gear to the front and rear. 3. If the measurement exceeds the allowable limit, replace the idle gear collar. Factory spec. 0.20 to 0.51 mm 0.0079 to 0.0201 in. Allowable limit 0.80mm 0.0315 in. Idle gear side clearance 3TMABAB1 P064A W11286770 Camshaft Side Clearance 1.
PAGE 119
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM ENGINE Oil Clearance of Camshaft Journal 1. Measure the camshaft journal 0.0. with an outside micrometer. 2. Measure the cylinder block bore 1.0. for camshaft with a inside micrometer, and calculate the oil clearance. 3. If the oil clearance exceeds the allowable limit, replace the camshaft. Factory spec. 0.050 to 0.091 mm 0.00197 to 0.00358 in. Allowable limit 0.15 mm 0.0059 in. Camshaft journal 0.0. Factory spec. 32.934 to 32.950 mm 1.29661 to 1.
PAGE 120
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE (3) Piston and Connecting Rod Piston Pin Bore 1.0. 1. Measure the piston pin bore 1.0. in both the horizontal and vertical directions with a cylinder gauge. 2. If the measurement exceeds the allowable limit, replace the piston. Factory spec. 20.000 to 20.013 mm 0.78740 to 0.78791 in. Allowable limit 20.05mm 0.7894 in. Piston pin bore 1.0. Wl1406200 3EEABAB1P138A Oil Clearance between Piton Pin and Small End Bushing 1.
PAGE 121
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Connecting Rod Alignment 3TMABABOP056A • NOTE • Since checking of the I.D. of the connecting rod small end bushing is the basis of this check, check bushing for wear beforehand. 1. Install the piston pin into the connecting rod. 2. Install the connecting rod on the connecting rod alignment tool. 3. Put a gauge over the piston pin, and move it against the face plate. 4.
PAGE 122
BX25. RCK54{P)-23BX. RCK60B-23BX.lA240. BT601. W8M ENGINE (4) Crankshaft Crankshaft Side Clearance 1. Set a dial indicator with its tip on the end of the crankshaft. 2. Measure the side clearance by moving the crankshaft to the front and rear. 3. If the measurement exceeds the allowable limit, replace the thrust bearings. 4. If the same size bearing is useless because of the crankshaft journal wear, replace it with an oversize one referring to the table and figure. 3GFABAB1 P054A Factory spec. 0.15100.
PAGE 123
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT60l, WSM ENGINE Oil Clearance between Crankpin and Crankpin Bearing I d ~ B 3TMABAB1P0748 1. Clean the crankpin and crankpin bearing. 2. Put a strip of plastigage on the center of the crankpin. 3. Install the connecting rod cap and tighten the connecting rod screws to the specified torque, and remove the cap again. 4. Measure the amount of the flattening with the scale, and get the oil clearance. 5.
PAGE 124
ENGINE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Oil Clearance between Crankshaft Journal and Crankshaft Bearing 1 1. Measure the 0.0. of the crankshaft front journal with an outside micrometer. 2. Measure the 1.0. of the crankshaft bearing 1 with an inside micrometer, and calculate the oil clearance. 3. If the oil clearance exceeds the allowable limit, replace the crankshaft bearing 1. 4.
PAGE 125
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Oil Clearance between Crankshaft Journal and Crankshaft Bearing 1 (Continued) (Reference) • Undersize crankshaft bearing 1 B Undersize Bearing Code Number Marking 0.2mm 0.008 in. Crankshaft bearing 1 02 1G460-23910 020 US Crankshaft bearing 1 04 1G460-23920 040 US 0.4mm 0.016 in. 3TMABAB1 P079A ! • Undersize dimensions of crankshaft journal Undersize 0.2mm 0.008 in. 0.4 mm 0.016 in. Dimension A 1.8 to 2.2 mm radius 0.071 to 0.
PAGE 126
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM 3TMABAB1 P081A ENGINE Oil Clearance between Crankshaft Journal and Crankshaft Bearing 2 and Crankshaft Bearing 3 1. Put a strip of plastigage on the center of the journal. 2. Install the bearing case and tighten the bearing case screws 1 to the specified torque, and remove the bearing case again. 3. Measure the amount of the flattening with the scale, and get the oil clearance. 4.
PAGE 127
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM A ENGINE Oil Clearance between Crankshaft Journal and Crankshaft Bearing 2 and Crankshaft Bearing 3 (Continued) (Reference) • Undersize crankshaft bearing 2 and 3 (0.2 mm (0.008 in.)) Bearing B Code Number Crankshaft bearing 2 02 1G460-23930 Crankshaft bearing 3 02 1G460-23940 Marking 020 US • Undersize crankshaft bearing 2 and 3 (0.4 mm (0.016 in.
PAGE 128
BX25, RCK54(P)-23BX. RCK60B-23BX, LA240, BT601, WSM ENGINE (5) Cylinder Cylinder Wear 1. Measure the cylinder liner 1.0. at the six positions (see figure) with a cylinder gauge to find the maximum and minimum 1.0:s. 2. Get the difference (Maximum wear) between the maximum and the minimum 1.0.'s. 3. If the wear exceeds the allowable limit, bore and hone to the oversize dimension. (Refer to "Correcting Cylinder".) 4. Visually check the cylinder wall for scratches.
PAGE 129
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ENGINE Clearance between Outer Rotor and Pump Body 1. Measure the clearance between the outer rotor and the pump body with a thickness gauge. 2. If the clearance exceeds the factory specifications, replace the oil pump rotor assembly. Clearance between outer rotor and pump body Factory spec. 0.07 to 0.15 mm 0.0028 to 0.0059 in. W10381420 Clearance between Rotor and Cover 1. Put a strip of plastigage onto the rotor face with grease. 2.
PAGE 130
PAGE 131
MECHANISM CONTENTS 1. STRUCTURE ................................................................................................. 2-M1 2. TRAVELLING SYSTEM ................................................................................ 2-M2 [1] HYDROSTATIC TRANSMISSION .......................................................... 2-M2 (1) Structure ............................................................................................ 2-M2 (2) Oil Flow ...................................................
PAGE 132
PAGE 133
BX25, RCK54{P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE 1.
PAGE 134
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE 2.
PAGE 135
BX25. RCK54(P)-23BX. RCK60B-23BX.
PAGE 136
TRANSAXLE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • Neutral (8) (9) ....... 12) . .
PAGE 137
TRANSAXLE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • Forward .....• !!'ll!l11lll!!!!lmli!1,t ......
PAGE 138
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • TRANSAXLE Reverse A (4) (7) (8) .·· (9) .....• (12) (14 ~illllllllllllltJlt ..... ..:X . .
PAGE 139
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • TRANSAXLE Relief (Reverse) .: . • ••••• 2) (1 .....
PAGE 140
BX25. RCK54(P)-23BX, RCK60B-23BX, LA240. BT601. WSM TRANSAXLE (3) HST Control Linkage 1) (2) The speed control pedal (5) and the trunnion arm are linked with the HST pedal link (10) and the speed change rod (11). As the front of the pedal is depressed. the swashplate connected to the trunnion arm (2) rotates and forward travelling speed increases. Depressing the rear end increases reverse speed. The trunnion arm (2) is returned to neutral position by the neutral arm and the tension of neutral spring.
PAGE 141
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE (4) Speed Set Linkage • Speed Set (1) Speed Set Rod (2) Brake Pedal (3) Speed Control Pedal (4) Parking Brake Lock Pedal (5) Cruise Lock (6) Cruise Lock (7) Cruise Arm (8) HST Pedal Link (9) Speed Change Rod (10) Damper (11) Trunnion Arm (12) Release Plate (13) Brake Rod (1 ) (7) (8) (9) (10) (11 ) A : Speed Set Rod "OFF" B : Speed Set Rod "ON" C : Speed Control Pedal "Forward" o : Cruise Lock "Locked" W1020771 (12) (3) 3TAAAAIKP003A
PAGE 142
BX25. RCK54(P)-23BX. RCK60B-23BX.
PAGE 143
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE [2] RANGE GEAR SHIFT SECTION Two kinds of power flow are selected by operating the range gear shift lever to shift the 16T-24T shiftier gear (4) on the spiral bevel gear shaft (3). • Low Range 17T Gear Shaft (2) ~ Shiftier Gear (24T) (4) ~ Spiral Bevel Pinion Shaft (3). • High Range 25T Gear (1 ) ~ Shiftier Gear (16T) (4) ~ Spiral Bevel Pinion Shaft (3). (3) l~r~~$~'i3"L IH.
PAGE 144
BX25. RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE [4] DIFFERENTIAL GEAR SECTION (1) Differential Gears (1) Differential Case (2) Differential Pinion (3) 37T Spiral Bevel Gear (4) 10T Final Gear Shaft (5) Differential Side Gear (6) Differential Pinion Shaft (7) 66T Final Gear (8) Differential Pinion (9) Differential Side Gear W1018746 (5) (6) (7) (8) (9) 3TAAAAFKP008A 1.
PAGE 145
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE (2) Differential Lock (1) (2) (3) (4) (5) (6) (7) (8) (9) Rear Axle Differential Differential Differential Rear Axle Differential Differential Differential Differential (10) Differential (11) Differential (4) (5) (7) (8) (9) Lock Shifter Case Pinion Lock Arm Lock Shaft Lock Shift Fork Side Gear Pinion Shaft Pinion W1015160 (10) (11) 3TAAAAFKP008B When resistance to the right and left tires are greatly different due to ground conditio
PAGE 146
TRANSAXLE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM [5] BRAKE SECTION (2) (1) (2) (3) (4) (5) (6) (3) (4) (5)(6) (7) (9) (1 ) Rear Axle LH Final Gear Shaft Shim Bearing Holder Friction Plate Actuator (7) Steel Ball (8) Cam Lever (9) O-ring (10) Rear Axle RH (11) Brake Disc (12) Internal Cir-Clip (13) Brake Pedal (14) Brake Rod (15) Parking Brake Lock Pedal (10) A : Connects with Brake Cam Lever and Brake Rod W1019428 (12)(11) o o o 3TAAAAIKP005A o o 0 (15) The mechanical wet disc b
PAGE 147
TRANSAXLE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM 3. PTO SYSTEM [1] PTO CLUTCH AND VALVE ______(5) H----r----c (6)- 3TAAAAFKP011 A (1) (2) (3) (4) PTO Select Gear PTO Clutch Pack Rear PTO Shaft Transmission Case (7) D (5) PTO Clutch Valve (6) PTO Clutch Relief Valve (7) Oil Filter Cartridge A: From HST Pump Shaft B : To Mid-PTO C: From Power Steering Controller 0: To Hydrostatic Transmission The BX25 equipped with hydraulic independent PTa clutch (wet multi-plates type).
PAGE 148
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE • PTO Clutch Relief Valve The PTO clutch relief valve is provided to control the PTO operating pressure. When the oil pressure exceed the relief valve setting pressure, relief valve opens and the oil flows into PTO clutch and hydrostatic transmission. (Reference) • Relief valve setting pressure: 490 kPa 5.0 kgf/cm 2 71.
PAGE 149
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM , , ,, C--.j 3TAAAAFKP012B TRANSAXLE • PTa Clutch "Disengaged" When the PTe clutch lever is set at the "Disengaged" position, the PTe clutch valve closes the oil passage to the PTe clutch pack. The oil in the PTe clutch pack drain into the transaxle case (10). Thus the clutch piston (4) is pushed back by the spring (7).
PAGE 150
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601. WSM TRANSAXLE [2] MID AND REAR PTO SECTION (7) 3TAAAAFKP013A (1) HST Pump Shaft (2) 12T Clutch Gear (3) PTO Clutch Pack (4) Rear PTO Shaft (5) 23T Mid PTO Gear (6) 24T Mid PTO Idle Gear (7) Mid-PTO Shaft (8) 2ST PTO Select Gear (9) 11T Gear Shaft Three kinds of power flow are selected by operating the PTO select lever to shift the PTO select gear (8) on the 11T gear shaft (9).
PAGE 151
BX25, RCK54(P)-23BX. RCK60B-23BX, LA240. BT601, WSM TRANSAXLE 4. OTHERS [1] HYDRAULIC PUMP DRIVE GEAR SECTION (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) HST Pump Shaft Spline Boss Idle Gear Hydraulic Pump Drive Gear Shaft Hydraulic Pump Drive Gear Hydraulic Pump Drive Gear Shaft Hydraulic Pump Flow Priority Valve Relief Valve (3P Hitch) Transmission Case W1016433 3TAAAAFKP014A The hydraulic pump (7) is mounted to the transmission case (10) and driven by the hydraulic pump drive gear (5).
PAGE 152
PAGE 153
SERVICING CONTENTS 1. TROUBLESHOOTING ................................................................................... 2-S1 2. SERVICING SPECIFICATIONS .................................................................... 2-S5 3. TIGHTENING TORQUES .............................................................................. 2-S7 4. CHECKING, DISASSEMBLING AND SERVICING ...................................... 2-S8 [1] CHECKING AND ADJUSTING ...............................................................
PAGE 154
PAGE 155
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM 1. TRANSAXLE TROUBLESHOOTING HYDROSTATIC TRANSMISSION Symptom System Will Not Operate in Either Direction Vibration and Noise Probable Cause Reference Page Solution Oil level is low Check oil level or fill oil to proper level G-13 Speed control pedal linkage defective Repair linkage 2-S22 Charge pressure is too low Solution order 1. Replace oil filter cartridge G-13 2. Check charge pressure 2-S12 3.
PAGE 156
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRAN5AXLE HYDROSTATIC TRANSMISSION (Continued) Symptom Loss of Power Transmission Oil Over Heats Probable Cause Solution Reference Page Oil level is low Check oil level or fill oil to proper level 5peed control pedal linkage defective Repair linkage Charge pressure is too low 1. Replace oil filter cartridge G-13 2. Check charge pressure 2-512 3.
PAGE 157
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601.
PAGE 158
6X25, RCK54(P)-236X, RCK606-23BX, LA240, B1601, WSM TRANSAXLE PTO SECTION Symptom Probable Cause Solution Reference Page Operating pressure is low Check 2-515 PTO clutch valve malfunctioning Repair or replace 2-523 Clutch disc or drive plate excessively wom Replace 2-537 Deformation of clutch piston Replace 2-537 PTO Shaft Does Not Rotate PTO clutch malfunctioning Repair or replace 2-537 PTO Clutch Operating Pressure Transmission oil improper or insufficient Replenish or change Reli
PAGE 159
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit - Charge Relief Valve [Oil temperature at 50 °C , 122 OF] Setting Pressure 0.55 to 0.75 kPa 5.6 to 7.7 kgf/cm 2 79.8 to 108.8 psi High Pressure Relief Valve (Forward and Reverse) [Oil temperature at 50 °C, 122 OF] Setting Pressure 19 to 22 MPa 193.8 to 224.4 kgf/cm 2 2775 to 3190 psi PTO Clutch Operating Pressure 1.0 to 1.3 MPa 10.2 to 13.3 kgf/cm 2 145.0 to 188.
PAGE 160
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601, WSM TRANSAXLE (Continued) Item Factory Specification Allowable Limit Differential Pinion to Differential Side Gear Backlash 0.15 to 0.30 mm 0.0059 to 0.0118 in. 0.40 mm 0.0157 in. Spiral Bevel Pinion Shaft to Spiral Bevel Gear Backlash 0.10 to 0.30 mm 0.0039 to 0.0118 in. - - 0.30 mm 0.0118 in. ~~~9 to 22.99 mm 22.40 mm 0.8819 in. Actuator and Bearing Holder Cam Plate and Ball I Flatness I Height . 12 to 0.9051 in.
PAGE 161
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-B.) Item N'm kgf'm ft·lbs Charge relief valve checking plug (R 1/4) 29 to 44 3.0 to 4.5 21.4 to 32.5 Hexagon socket head plug (R 1/4) 29 to 44 3.0 to 4.5 21.4 to 32.5 Check and high pressure valve screw 2.5 to 3.0 0.26 to 0.31 1.Bt02.2 13 to 22 1.3 to 2.2 9.
PAGE 162
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Adjusting Maximum Speed • Forward 1. Depress the speed control pedal (1) all the way and lengthen the stopper bolt (2) until it touches the speed control pedal (2). 2. Adjust the stopper bolt (2) length A to 17.0 mm (0.67 in.) and lock it securely . • Reverse 1. Adjust the stopper bolt (3) length B to 17.5 mm (0.69 in.) and lock it securely.
PAGE 163
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE Preparation before HST Adjustment A CAUTION • Park the machine on a firm and level ground. 1. Place the wooden blocks at the front and the rear side of the wheels not to move the tractor. 2. Lift up the rear wheels (1) safely by the rigid jacks. 3. Shift the front wheel drive lever (2) to "OFF" position (A). 4. Remove the rear right wheel from the tractor.
PAGE 164
TRANSAXLE BX25. RCK54(P)-23BX. RCK60B-23BX, LA240, BT601, WSM Adjustment of HST Neutral Position 1. 2. 3. 4. Start the engine. Keep the engine at the maximum revolution. Shift the range shift lever (1) to "Hi" position (8). Loosen the locking screw (5). • NOTE • When adjusting the HST neutral position, loosen the locking screw approximately 2 turns counterclockwise not to drop the nut inside. • Make sure 4WD lever is 2WD before making adjustment. (Forward to Neutral Position) 5.
PAGE 165
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601! WSM TRANSAXLE Checking and Adjusting HST Neutral Spring (for Dynamic Braking) A WARNING • Do not operate if tractor move on level ground with foot off speed control pedal. • If tractor moves on level ground with foot off the pedal, or, if the pedal is too slow in returning to "Neutral" position when removing the foot from the pedal, adjust the HST neutral spring.
PAGE 166
TRANSAXLE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Charge Relief Pressure A • 1. 2. 3. 4. 5. CAUTION When checking, park the tractor on flat ground, and apply the parking brake. Remove the plug (R 1/4) (1) from the front cover, then install the adaptor (R 1/4) and pressure gauge. Set the range gear shift lever to "Neutral" position. Start the engine and run it at the maximum speed. Read the pressure gauge to measure the charge relief pressure.
PAGE 167
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE High Relief Pressure (Reverse) A CAUTION • When checking, park the tractor on flat ground, and apply the parking brake. 1. Remove the hexagon socket head plug (R 1/4) from P1 (1), then install the adaptor, cable and pressure gauge. 2. Start the engine and run it at maximum speed. 3. Set the range gear shift lever to "Hi" position. 4. Depress the speed control pedal to "Reverse", and read the pressure gauge to measure the high relief pressure.
PAGE 168
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE Readjustment of Relief Valve (When the HST does not Work Due to its Loose Hexagon Socket Head Screw) 3TAAAAFKP051A (4) --",~~:::=T (5) (3) (1) 3XVAAAB3P140A • IMPORTANT • KUBOTA does not recommend the readjustment of relief valve. KUBOTA recommends with genuine parts. • As the HST may be damaged ifthe pressure is setto high by mistake, be careful when adjusting it. • NOTE • The relief pressure is set in between 20.1 to 21.
PAGE 169
TRANSAXlE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM PTO Clutch Operating Pressure A (a) CAUTION • When checking, park the tractor on flat ground, apply the parking brake. 1. Remove the under panel. 2. Connect the adaptor of A between the power steering return hose (1), then connect the adaptor B and the pressure gauge with adaptor A. 3. Start the engine and set at maximum speed. 4. Measure the pressure. 5.
PAGE 170
TRANSAXLE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM [2] PREPARATION • Before proceeding this section, disassembling the loader assembling and backhoe. (Refer to section 8 and 9.) (1) Separating Transaxle Draining Transmission Fluid A CAUTION • Be sure to stop the engine before checking and changing the transmission fluid. 1. Place oil pan under the tractor. 2. Remove the drain plug (1) at the bottom of the transmission case. 3. Drain the transmission fluid and reinstall the drain plug.
PAGE 171
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE RolI·Over Protective Structures (ROPS) and Seat 1. Disconnect the lead wires from the hazard lights (2), (4) and turn signal lights (3), (5). 2. Remove the ROPS mounting nuts, and remove the ROPS (1). 3. Disconnect the seat switch connectors. 4. Remove the snap pin (7) and remove the seat (6). (When reassembling) Tightening torque (1) (2) (3) (4) ROPS mounting nut ROPS Hazard Light LH Turn Signal Light LH Hazard Light RH 124 to 147 N'm 12.
PAGE 172
BX25, RCK54{P}-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE Fender Center Stay 1. Remove the fender bracket (2). 2. Remove the fender center stay (1). (When reassembling) TIghtening torque (1) Fender Center Stay Fender bracket mounting bolt 124 to 147 N'm 12.6 to 15.0 Kgf·m 91.2 to 108 ft-Ibs (2) Fender Bracket W1026166 Connecting Bar and Wire harness 1. Remove the wireharness clamps and move the wireharness (1) forward. 2. Remove the connecting bar (2) mounting screws. 3.
PAGE 173
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE Sub Frame Fender Bracket and Hitch Plate 1. Remove the sub frame (3). 2. Remove the hitch plate (4). 3. Remove the fender brackets (1), (2). (When reassembling) • Do not firmly tighten all screws, bolts and nuts until most components are attached. Sub frame mounting bolt and nut (M14) 147 N'm 15.0 kgf·m 108.5 ft-Ibs Sub frame mounting bolt and nut (M16) 196 N'm 20.
PAGE 174
TRANSAXLE BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM Transaxle Assembly 1. Remove the differential lock rod (1). 2. Remove the brake rod (3). 3. Disconnect the pipes (2). 4. Disconnect the connector (4). 5. Remove the rear coupling mounting bolt (7). 6. Disconnect the power steering pipes (8). 7. Remove the speed control rod (6). 8. Remove the wire harness clamps 9. Remove the frame brackets (10). (When reassembling) • Tighten the smaller bolt (M12) first.
PAGE 175
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE Brake Pedal and Propeller Shaft 1. Unhook the spring (3) and the parking plate (4). 2. Removing the spring pin (5) from the brake pedal (1). Disconnect the brake spring (2) and remove the brake pedal (1). 3. Disconnect the front coupling (6) from the engine. 4. Remove the propeller shaft assembly. 5. Remove the HST fan from the propeller shaft. (When reassembling) • Apply grease to inside of the front coupling and the rear coupling.
PAGE 176
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (1 ) TRANSAXLE Speed Control Pedal, HST Damper and Cruise Rod 1. Remove the speed control pedal (1). 2. Remove the rue ring cotter (4). 3. Remove the HST dumper (2). 4. Remove the release arm (7). 5. Remove the spring (6) and the cruise rod (5). 6. Remove the cruise lock (8).
PAGE 177
TRANSAXLE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM [3] DISASSEMBLING AND ASSEMBLING (1) Hydrostatic Transmission Levers and Mower Lift Arm 1. Tap out the spring pin from the range gear shift lever (1) and front wheel drive lever (3), then remove the both levers. 2. Remove the hydraulic control lever (2). 3. Remove the PTO select lever (4) and PTO clutch control lever (5). (When reassembling) • Apply grease to inside of the front coupling and rear mounting.
PAGE 178
TRANSAXLE BX25, RCK54(P)-23BX. RCK60B-23BX. lA240, 6T601, WSM HST Front Cover 1. Remove the internal cir-clip (4). 2. Remove the HST front cover. 3. Remove the HST front cover (1) not to damage the oil seal (5). 4. Remove the center section (6). (When reassembling) 1. Do not damage the oil seal (5). 2. Tighten the HST mounting bolts and the nut to the factory specifications. Tightening torque HST front cover mounting bolt (MS) 18.0 to 21.0 N'm 1.8 to 2.1 kgf·m 13.3 to 15.
PAGE 179
BX25, RCK54(P)-23BX, RCK60B-23BX, lA240, BT601, WSM TRANSAXLE Check and High Pressure Relief Valve Plug (1 1. Remove the check and high pressure relief plug (G 1/2). (When reassembling) lightening torque (1) Center Section (2) Plug Check and high pressure relief valve plug (G 1/2) 59 to 78 N'm 6.0 to 8.0 kgf'm 44 to 571bHt (3) Plug W1087469 (1) (2) \ ~\~, "". 3TAAAAIKPOO7A . . (4) (3) Check and High Pressure Relief Valve 1.
PAGE 180
TRANSAXLE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Cylinder Block 1. Remove the gasket (1). 2. Remove the O-ring (2). 3. Remove the cylinder block assembly (4) (5) from the transaxle. (When reassembling) • Turn the disassembling and the assembling stand vertically. • Install the cylinder block assembly (4) (5) to the shafts not to drop the pistons from the cylinder block assembly (4) (5) carefully.
PAGE 181
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE Swashplate and Trust Roller Bearing 1. Remove the cir-clip (6) from the pump shaft (3) and the motor shaft (1). 2. Remove the thrust bearing (2). 3. Remove the swash plate (5) and the thrust roller bearing (4). (When reassembling) • Apply clean transmission oil to the cradle bearing and the trunnion arm. • Hold the slot guide with a minus screw driver. • Apply clean transmission oil to the thrust roller bearing.
PAGE 182
TRANSAXLE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM 4WD Detent Ball 1. Remove the 4WD detent bolt (1), the detent spring (2) and the detent ball (3) before removing the transaxle front case, not to drop the detent ball (3) into the trans axle case. (1) 4WD Detent Bolt (2) Detent Spring (3) Detent Ball (4) Transaxle Front Case W1102203 Neutral Arm and Trunnion Arm 1. Disconnect the neutral spring(2) from the H5T front cover. 2. Loosen the neutral adjuster (5). 3.
PAGE 183
TRANSAXLE BX25 , RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (2) Hydraulic Cylinder Hydraulic Cylinder 1. Disconnect the delivery pipe (1). 2. Remove the hydraulic cylinder mounting bolts (3). 3. Remove the hydraulic cylinder (2). (When reassembling) • Apply liquid gasket (Three Bond 12080 or equivalent) to the joint surface of the transaxle case to the hydraulic cylinder. TIghtening torque (1) Delivery Pipe (2) Hydraulic Cylinder Hydraulic cylinder mounting bolt 39.2 to 44.1 N'm 4.0 to 4.5 kgf·m 28.
PAGE 184
TRANSAXLE 8X25, RCK54(P)-238X, RCK60B-23BX, LA240, BT601, WSM (3) Transaxle Shafts Transaxle Case Front Cover • NOTE • Before removing the transaxle case front cover (4), remove the 4WD detent bolt (1), the detent spring (2) and the detent ball (3) from the transaxle case front cover (4). • Remove the cir-clip (5) from the HST pump shaft (PTO shaft) from the HST pump shaft (5) and the HST motor shaft securely. 1. Remove the transaxle case front cover mounting bolts (2). 2.
PAGE 185
TRANSAXLE BX25. RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Hydraulic Pump Assembly 1. Remove the hydraulic pump assembly mounting bolt (2), (3). 2. Remove the hydraulic pump assembly (1) as an unit from the transaxle case. (When reassembling) • Apply transmission oil to the O-rings. • Since the mounting bolt (2) is installed through the hydraulic pump to the transaxle case, bind the sealing tape to the mounting bolt (2) securely. Hydraulic pump assembly mounting bolt (M6) 8.0 to 9.0 N'm 0.8 to 0.
PAGE 186
TRANSAXLE BX25. RCK54(P)-23BX, RCK60B-23BX. LA240, BT601. WSM Rear PTa Cover Assembly 1. Remove the rear PTO cover mounting bolts (1). 2. Remove the rear PTO cover (2). 3. Remove the rear PTO shaft (5) from the rear PTO cover (2). (When reassembling) • Pull the 11T PTO select shaft with the bearing approximately the bearing thickness. • Apply liquid gasket (Three Bond 1208D or equivalent) to the joint surface of transaxle case to the rear PTO cover.
PAGE 187
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE Rear Axle (LH) • NOTE • Prepare a specially bent snap ring plier. 1. Draw out the oil seal with a screw driver. 2. Remove the internal cir-clip from the rear axle case. 3. Draw out the rear axle from the rear axle case. (When reassembling) • Do not damage the oil seal.
PAGE 188
TRANSAXLE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Rear Axle Case (RH) 1. Remove the rear axle case (RH) mounting bolts. 2. Remove the rear axle case (RH) (1) as an assembly from the transaxle case . • NOTE • Since the adjusting shims are installed behind the 37T spiral bevel gear, check the shims. 3. Remove the 37T spiral bevel gear (2). 4. Remove the 10T final gear shaft (3). 5. Remove the 66T final gear with the differential lock shift fork.
PAGE 189
TRANSAXLE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM 66T Final Gear 1. Remove the bearing (2) with a puller. 2. Remove the bearing (4) with a puller. 3. Remove the differential lock shiftier (5) and 66T final gear (6). 4. Put parting marks on the differential pinions (12), (16) and the differential side gears (9), (14). 5. Tap out the differential pinion shaft (8). 6.
PAGE 190
TRANSAXLE BX25. RCK54(P)-23BX, RCK60B-23BX. LA240, BT601, WSM Rear Axle Case, RH and Brake 1. Remove the internal cir-clip (1). 2. Remove the shim (9), the bearing holder (8) and the other brake parts from the brake case. (When reassembling) • Apply grease to the steel balls. • Take care not to damage the O-ring on the brake cam lever. • Check that the brake cam lever moves smoothly.
PAGE 191
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRAN8AXLE PTO Clutch Assembly 1. Remove the bearing (2). 2. Remove the external cir-clip and the outlet gear (3). 3. Remove the seal rings (6). 4. Remove the bearing (5). 5. Remove the external cir-clip (18) using a clutch spring compressor. 6. Disassembling the clutch pack inner parts as show in the figure. (When reassembling) • Change the seal ring (6) with a new one. (18) (17) (16) (15) (14) \: ~ ~ (6 (3) / '" ~.
PAGE 192
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE (4) Assembling Shafts Assembling Select Arms and HST Pump Shaft (PTO Clutch Shaft) 1. Install the PTa select arm (1). 2. Install the range shift arm (2) and the front wheel drive shaft arm (3). 3. Install the idle gear shaft . • NOTE • Install the rear PTO cover and the PTO select gear shaft before installing HST pump shaft assembly. 4. After installing the rear PTa cover to the transaxle case, install the PTa select gear shaft (6).
PAGE 193
BX25. RCK54(P)-23BX, RCK60B-23BX, LA240. BT601. WSM TRANSAXLE Front Wheel Drive Shaft, Shiftier, Spiral Bevel Pinion Shaft and Mid-prO Shaft 1. Install the front drive shaft (1). 2. Install the shiftier (2) and the spiral bevel pinion shaft (3) together. 3. Install the mid-PTO idle gear shaft (5) and the mid-PTO shaft (6) and the HST motor shaft (4) together.
PAGE 194
TRANSAXLE 8X25, RCK54(P)-23BX, RCK60B-23BX, lA240, BT601, WSM [4] SERVICING (1) Hydrostatic Transmission Center Section 1. Check the center section surface (1) for scratches or wear. 2. If deep scratch or excessive wear is found, replace the hydrostatic transmission assembly. (1) Center Section Surface W1093581 Charge Relief Valve 1. Check the charge relief cone (1) and the spring (2). 2. If defects are found, replace it.
PAGE 195
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE Cylinder Block Assembly 1. Check the cylinder blocks (1) and the pistons (2) for scratches and wear. 2. If there are scratch or worn, replace the cylinder block assembly. 3. Check the pistons for their free movement in the cylinder block bores. 4. If the piston or the cylinder block is scored, replace the cylinder block assembly. 5. Check the polished face (4) of the cylinder block for scoring.
PAGE 196
BX25, RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM TRANSAXLE Pump Shaft (PTO Clutch Shaft) 1. Check the seal surface (1) and the bearing surface. 2. If the pump shaft is rough or grooved, replace it. 3. If the ball bearing or the needle bearing is worn, replace it. (1) Seal Surface (2) Bearing Surface W1094465 3TAAAAFKP110A Needle Bearing 1. Check the needle bearing (1) for wear. 2. If the needle bearing (1) are worn, replace them.
PAGE 197
BX25. RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE Separate Plate and Back Plate Wear 1. Measure the thickness of pressure plate and steel back with vernier calipers. 2. If the thickness is less than the allowable limit, replace it. Thickness of separate plate (;,-~ " ,rr Factory spec. 0.9450 to 1.055 mm 0.03721 to 0.04153 in. Allowable limit 0.80mm 0.031 in. Factory spec. 1.9to 2.1 mm 0.075 to 0.082 in. Allowable limit 1.85 mm 0.0728 in.
PAGE 198
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE Clearance between Differential Case and Differential Side Gear 1. Measure the differential side gear boss O.D. with an outside micrometer. 2. Measure the differential case I.D. with a cylinder gauge and calculate the clearance. 3. If the clearance exceeds the allowable limit, replace faulty parts. Clearance between differential case and differential side gear Factory spec. 0.0500 to 0.151 mm 0.00197 to 0.00594 in. Allowable limit 0.30 mm 0.
PAGE 199
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE Backlash between Spiral Bevel Pinion Gear and Bevel Gear 1. Temporarily assemble the spiral bevel pinion gear (2) and the bevel gear (1) in the transaxle case. 2. Prepare the fuse bent already three to four times. 3. Hold the fuse on the bevel gear teeth upper surface (A). 4. Turn the front drive shaft one turn clockwise by hands. 5. Measure the thickness of the fuse as a backlash between the spiral bevel pinion gear and the bevel gear. 6.
PAGE 200
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TRANSAXLE Height of Cam Plate and Ball 1. Measure the height of the cam plate with the ball installed. 2. If the measurement is less than the allowable limit, replace the cam plate and balls. 3. Inspect the ball holes of cam plate for uneven wear. 4. If the uneven wear is found, replace it. Factory spec. 22.89 to 22.99 mm 0.9012 to 0.9051 in. Allowable limit 22.40 mm 0.8819 in.
PAGE 201
MECHANISM CONTENTS 1. STRUCTURE ................................................................................................. 3-M1 2. FRONT WHEEL ALIGNMENT .....................................................................
PAGE 202
PAGE 203
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM FRONT AXLE 1.
PAGE 204
BX25. RCK54(P)-23BX. RCK60B-23BX, LA240. BT601, WSM FRONT AXLE 2. FRONT WHEEL ALIGNMENT To assure smooth mobility or maneuverability and enhance stable and straight running, the front wheels are mounted at an angle to the right, left and forward directions. This arrangement is referred to as the Front Wheel Alignment. • Camber The front wheels are tilted from the vertical as viewed from the front, upper wheels are spreader than lower ones. This inclination is called camber (a).
PAGE 205
FRONT AXLE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • I· F t .. \ Toe-in Viewing the front wheels from above reveals that the distance between the toes of the front wheels is smaller than that between the heels. It is called toe-in. The front wheels tend to roll outward due to the camber, but toe-in offsets it and ensures parallel rOiling of the front wheels. Another purpose of toe-in is to prevent excessive and uneven wear of tires. I R 3TAAAAB6P004A Toe-in F: Front I Ota5 mm ?toO.
PAGE 206
PAGE 207
SERVICING CONTENTS 1. 2. 3. 4. TROUBLESHOOTING ....................................................................................3-S1 SERVICING SPECIFICATIONS .................................................................... 3-S2 TIGHTENING TORQUES .............................................................................. 3-S3 CHECKING, DISASSEMBLING AND SERVICING ...................................... 3-S4 [1] CHECKING AND ADJUSTING ...............................................................
PAGE 208
PAGE 209
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM FRONT AXLE 1.
PAGE 210
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM FRONT AXLE 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit oto 5 mm oto 0.19 in. - 49.0 to 117.7 N 5.0 to 12.0 kgf 11.0 to 26.5 Ibs - Front Wheel Alignment Toe-in Front Axle Rocking Force Differential Case to Differential Side Gear Clearance 0.040 to 0.082 mm 0.00157 to 0.00323 in. 0.17 mm 0.0067 in. Differential Case to. 26.000 to 26.021 mm 1.02362 to 1.02445 in. - Differential Side Gear 0.0. 25.939 to 25.
PAGE 211
BX25. RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM FRONT AXLE 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-B.) Item N'm kgf'm ft-Ibs Front wheel mounting screw 149.2 to 179.0 15.3 to 1B.2 110 to 132 Power steering cylinder hose 23.6 to 27.4 2.4 to 2.8 17.4 to 20.2 TIe-rod slotted nut 17.7 to 34.3 1.8 to 3.5 13.0 to 25.3 Power steering cylinder mounting screw 48.1 to 55.
PAGE 212
FRONT AXLE BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING (A) t (e) Toe-in 1. Inflate the tires to the specified pressure. 2. Turn the front wheels straight ahead. 3. Measure the toe-in ((B)-(A». 4. If the measurement is not within the factory specifications, adjust the tie-rod length. Toe-in «B)-(A») (8) o to 5 mm Factory spec. o to 0.19 in . • Adjusting procedure 1.
PAGE 213
BX25, RCK54(P)-23BX. RCK60B-23BX, LA240, BT601, WSM FRONT AXLE Front Wheel Steering Angle 1. Inflate the tires to the specified pressure. 2. Loosen the lock nut and shorten the length of stopper bolt LH (1). 3. Steer the wheels to the extreme left. 4. Lengthen the length of stopper bolt (1) until the stopper bolt contacts with the bevel gear case (3). 5. Return the steering wheel to straight ahead and lengthen the stopper bolt four turn from above position further. 6.
PAGE 214
BX25, RCK54(P)-23BX, RCK60B-23BX. LA240, BT601, WSM FRONT AXLE Battery A CAUTION • When disconnecting the battery cables, disconnect the negative cable from the battery first. When connecting, connect the positive cable to the battery first. 1. Remove the under panel (1). 2. Disconnect the negative cable (2) from the battery. (1) Under Panel (2) Battery (3) Negative Cable W1012394 Bonnet and Under Cover 1. Remove the front guard (1). 2.
PAGE 215
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601, WSM FRONT AXLE Disconnecting Propeller Shaft 1. Tap out the spring pins (2) and disconnect the universal joint (1) and spiral bevel pinion shaft. (When reassembling) • Apply grease to the splines of the propeller shaft and universal joint. (1) Universal Joint (2) Spring Pin W1013075 Front Axle Assembly 1. Remove the power steering hose cramp (1). 2. Place the garage jack under the front axle. 3. Remove the cotter pin (1). 4.
PAGE 216
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM FRONT AXLE [3] DISASSEMBLING AND ASSEMBLING (1) Front Axle Assembly 3TAAAAF6P011A Power Steering Cylinder 1. Remove the cotter pin and remove the slotted nut for tie-rod (1). 2. Remove the power steering cylinder mounting screws and remove the power steering cylinder (2) with tie-rod. (When reassembling) • NOTE • Tighten the slotted nut to 17.7 N'm (1.8 kgf·m, 13 ft-Ibs).
PAGE 217
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601 , WSM (5) l 3TAAAAF6P015A FRONT AXLE 36T Bevel Gear and Front Axle Shaft 1. Remove the bearing (5). 2. Take out the 36T bevel gear (4). 3. Take out the collar (3). 4. Tap out the axle shaft (2). (When reassembling) • Install the oil seal (6) of front gear case cover (1), noting its direction as shown in the figure.
PAGE 218
FRONT AXLE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (4)-----' ._ -(3) .. -(2) 0-(1) 3TAAAAF6P016A Front Gear Case and Bevel Gear Case 1. Remove the internal snap ring (1). 2. Remove the bevel gear with ball bearing (3) and shim (2). 3. Remove the bevel gear (4). 4. Remove the external snap ring (7). 5. Remove the bevel gear case (5) from front gear case (6). 6. Remove the oil seal (12) and the ball bearing (11). 7. Remove the internal snap ring (10) and remove the ball bearing (9). 8.
PAGE 219
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM FRONT AXLE Bevel Pinion Shaft and Differential Gear Assembly 1. 2. 3. 4. 5. (8) (9) (2) (10) (11) Take out the differential yoke shaft (4). (7). Remove the oil seal (11). Remove the internal snap ring (1). Pull out the bevel pinion shaft (3). Take out the differential gear assembly (5). from right side of front axle case (6). 6. Remove the stake of lock nut (10). and then remove the lock nut (10). 7. Remove the taper roller bearing (9).
PAGE 220
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM FRONT AXLE [4] SERVICING • 3TAAAAD6P023A Clearance between Differential Case and Differential Side Gear 1. Measure the differential side gear boss O.D .. 2. Measure the differential case bore I.D., and calculate the clearance . 3. Measure the differential case cover bore I.D., and calculate the clearance. 4. If the clearance exceeds the allowable limit, replace faulty parts. Clearance between differential case and differential side gear Factory spec.
PAGE 221
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM FRONT AXLE Turning Torque of Bevel Pinion Shaft 1. Cramp the spiral bevel pinion shaft assembly to the vise and tighten the staking nut. 2. Measure the tuming torque of bevel pinion shaft. 3. If the turning torque is not within the factory specifications, adjust with the lock nut. Turning torque • O.S to 1.0 N'm O.OS to 0.10 kgf·m 0.59 to 0.73 ft-Ibs Factory spec. NOTE • After turning force adjustment, be sure to stake the lock nut.
PAGE 222
FRONT AXLE BX25. RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (1 ) (2) (3) Backlash between 12T Bevel Gear and 1ST Bevel Gear 1. Stick a strip of fuse to three spots on the 1ST bevel gear (1 ) with grease. 2. Fix the front axle case, bevel gear case and front gear case. 3. Tum the axle. 4. Remove the bevel gear case from front axle case and measure the thickness of the fuses with an outside micrometer. 5. If the backlash is not within the factory specifications, adjust with shim (3).
PAGE 223
MECHANISM CONTENTS 1. HYDRAULIC CIRCUIT .................................................................................. 4-M1 2. STEERING CONTROLLER .......................................................................... 4-M2 3. STEERING CYLINDER. ................................................................................
PAGE 224
PAGE 225
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM STEERING 1. HYDRAULIC CIRCUIT (1) (2) (3) (4) Steering Controller Steering Cylinder Flow Priority Valve Hydraulic Control Valve Assembly (5) Hydraulic Pump (6) Oil Strainer (2) (3) 0 E c l )( A: B: C : D: E : To PTO Clutch Valve To HST To Hydraulic Cylinder To Implement From Implement W1012655 (6) B (5) (4) 3TAAAG7POO1A This model is provided with a full hydrostatic power steering.
PAGE 226
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM STEERING 2. STEERING CONTROLLER (4) (3) 3TAAAAB7P002A =~§i]§~~_(5) (3) _ _+-1--....1' (2) (6) (4) 3TAAAAF7P002A A (7) 3TAAAAB7P004B B ~~ (10) (11 ) The steering controller consists of a control valve (4) and a metering device (3). • Control Valve The control valve is a rotating spool type. When the steering wheel is not turned, the position of the spool (7) and sleeve (9) is kept neutral by the centering spring (8).
PAGE 227
BX25, RCK54(P).23BX, RCK60B·23BX, LA240, BT601, WSM STEERING 3. STEERING CYLINDER (1 ) (2) (3) (4) (5) (6) (7) (8) (9) (9) (10) (11) 3TAAAAB7POO6A (1) Rod (2) Wiper Seal (3) Internal Snap Ring (4) Guide (5) O-ring (6) Seal Ring (7) Center Piston (8) Piston O-ring (9) External Snap Ring (10) Cylinder Tube (11) Rod O-ring The steering cylinder is single piston both rod double-acting type. This steering cylinder is installed parallel to the front axle and connected to tie-rods.
PAGE 228
PAGE 229
SERVICING CONTENTS 1. 2. 3. 4. TROUBLESHOOTING ................................................................................... .4-S1 SERVICING SPECIFICATIONS ....................................................................4-S2 TIGHTENING TORQUES ............................................................................. .4-S3 CHECKING. DISASSEMBLING AND SERViCiNG ..................................... .4-S4 [1] CHECKING .............................................................................
PAGE 230
PAGE 231
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM STEERING 1.
PAGE 232
BX25. RCK54(P)-23BX. RCK60B-23BX, lA240, BT601, WSM STEERING 2. SERVICING SPECIFICATIONS POWER STEERING BODY Item Relief Valve Operating Pressure Factory Specification Allowable Limit 8.33 to 8.83 MPa 85.0 to 90.0 kgf/cm 2 1209 to 1280 psi - W1013874 STEERING CYLINDER Steering Cylinder Piston Rod to Guide I.D. 40.000 to 40.062 mm 1.57480 to 1.57724 in. 40.100 mm 1.57874 in. Clearance 0.020 to 0.070 mm 0.00079 to 0.00276 in. 0.200 mm 0.00787 in.
PAGE 233
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM STEERING 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-8.) Item N'm kgf·m 20 to 25 2.0 to 2.6 Power steering hose mounting nut 28.4 to 30.0 2.9 to 3.1 20.9 to 22.1 Power steering cylinder hose 23.6 to 27.4 2.4 to 2.8 17.4 to 20.2 Tie-rod slotted nut 17.7 to 34.3 1.8 to 3.5 13.0 to 25.
PAGE 234
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM STEERING 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING (1) Relief Valve Relief Valve Operating Pressure 1. Disconnect the power steering hose L (or R) from steering controller, and set a pressure gauge and hose. (Reference) • Hose and adaptor size : 9/16-18UNF, 37 0 flare 2. Start the engine and set at maximum speed. 3. Fully turn the steering wheel to the left (or right) to check the feeling which the steering wheel lightly locks.
PAGE 235
STEERING BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Steering Wheel 1. Remove the steering wheel cap (1). 2. Remove the steering wheel mounting nut and remove the steering wheel. (When reassembling) TIghtening torque Steering wheel mounting nut 20 to 25 N'm 2.0 to 2.6 kgf·m 14.8 to 18.4 ft-Ibs (1) Steering Wheel Cap W1011793 Meter Panel 1. Disconnect the main switch connector and combination switch connector (7). 2. Remove the hand accelerator lever grip and cruise control lever knob. 3.
PAGE 236
BX25. RCK54(P)-23BX. RCK60B-23BX, LA240. BT601, WSM STEERING (2) Separating Power Steering Cylinder Bonnet and Under Cover 1. Remove the front guard (1). 2. Open the bonnet (2), and then loosen the knob bolts and pull forward to remove the under cover (3). 3. Disconnect the connectors (4) for head light and remove the bonnet bracket (5) with bonnet. (1) Front Guard (2) Bonnet (3) Under Cover (4) Connector (5) Bonnet Bracket W1013603 Front Axle Assembly 1. Remove the power steering hose cramp (1). 2.
PAGE 237
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM STEERING Power Steering Cylinder 1. Remove the cotter pin and remove the slotted nut for tie-rod (1). 2. Remove the power steering cylinder mounting screws and remove the power steering cylinder (2) with tie-rod. (When reassembling) • 3TAAAAF6P011A NOTE • Tighten the slotted nut to 17.7 N'm (1.8 kgf'm, 13 ft-Ibs). If the slot and pin hole do not meet, tighten the nut until they do meet, and install the cotter pin.
PAGE 238
STEERING BX25, RCK54(P)-23BX, RCK60B-23BX, lA240, BT601, WSM [3] DISASSEMBLING AND ASSEMBLING (1) Power Steering Cylinder Adaptor and Tie-rod 1. Remove the cylinder hose adaptors (4), (6). 2. Remove the tie-rods (2), (8) from piston rod (7). 3. Remove the cylinder holder (1) and internal snap ring (3). (When reassembling) a Be sure to install the hose adaptors (4), (6) as shown figure left. a After reassembling the tie-rod, be sure to adjust the toe-in. (Refer to 3-S4.
PAGE 239
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM STEERING [4] SERVICING /' Steering Cylinder 1.0. 1. Measure the steering cylinder 1.0. with a cylinder gauge. 2. If the cylinder 1.0. exceed the allowable limit, replace the cylinder barrel. Factory spec. Steering cylinder 1.0. Allowable limit .100 mm 57874 in. W1013872 3TAAAAB7P017A Clearance between Rod and Guide 1. Measure the rod guide 1.0. with a cylinder gauge. 2. Measure the rod 0.0. with an outside micrometer, and calculate the clearance. 3.
PAGE 240
PAGE 241
MECHANISM CONTENTS 1. HYDRAULIC CIRCU IT .................................................................................. 5-M 1 2. HYDRAULIC PUMP ...................................................................................... 5-M2 3. CONTROL VALVE ........................................................................................ 5-M3 FLOW PRIORITY VALVE ... ......................................................................... 5-M6 RELIEF VALVE ...........................................
PAGE 242
PAGE 243
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM 1. HYDRAULIC CIRCUIT (1)----r .-.-------- i i i i i i i i i i iI L._. i I I i '--1 II i (3) I i L-_-_-_____.-4-.______+- _______Ji (5) II II II II II -_·_·_-_·_-------_·_·_·_·_·1II I .---+--+--1------------.
PAGE 244
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM 2. HYDRAULIC PUMP The hydraulic pump is composed of the casing (1), cover (4), side plate (3), and two spur gears (drive gear (5) and driven gear (2)) that are in mesh. Hydraulic pump is driven by the pump drive shaft in the transmission case. Maximum displacement is as follows. (1 Displacement 23.5 Umin. 6.2 U.S.gals.lmin. 5.2 Imp.gals./min.
PAGE 245
BX25, RCK54(P)-23BX. RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM 3. CONTROL VALVE This position control valve is located under the hydraulic cylinder. This control valve is mechanically connected to the position control lever. Since the feedback rod is not equipped to the lift arm, the neutral position adjustment is adjusted by controlling the position control lever. The control valve controls the oil flow forced from the hydraulic pump and the oil returned back from the hydraulic cylinder .
PAGE 246
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • HYDRAULIC SYSTEM Lift (1 ) T1 3TAAAAF8P028A (3) 3TAAAAF8P035A When the control lever is set to the "Lift" position, the spool (4) moves to the right. The oil forced into the control valve flows through P port to C port and the hydraulic cylinder. The oil pushes the hydraulic piston in the hydraulic cylinder to lift the implement.
PAGE 247
BX25. RCK54(P)-23BX. RCK60B-23BX, LA240. BT601, WSM • HYDRAULIC SYSTEM Down \ 3TAAAAF8P029A (3) 3TAAAAF8P036A When the control lever is set to the "Down" position, the spool (4) moves to the left. The oil forced from the P port flows through the gap between the control valve body and the spool to the T1 port. The oil in the hydraulic cylinder flows through the gap between the control valve body (3) and the spool (4) to the T2 port.
PAGE 248
BX25, RCK54(P)-23BX, RCK60B-23BX, lA240, BT601, WSM HYDRAULIC SYSTEM 4. FLOW PRIORITY VALVE (3) (1) (2) (3) (4) (5) EF Hydraulic Pump Gear Hydraulic Pump Case Plug Flow Priority Valve Relief Valve EF :EF Port (To 3 Points Hitch Control Circuit) PF :PF Port (To Power Steering, PTO Clutch and HST Circuit) P: Pump Port (Suction) T: Tank Port W1014933 3TAAAAF8P030A The flow priority valve is a flow divider that divides single hydraulic source (hydraulic pump) to actuates two circuits simultaneously.
PAGE 249
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM 5. RELIEF VALVE (1) (2) (3) (4) (5) Hydraulic Pump Gear Hydraulic Pump Case Plug Flow Priority Valve Relief Valve EF :EF Port (To 3 Points Hitch Control Circuit) PF :PF Port (To Power Steering, PTO Clutch and HST Circuit) D.C.:Damping Chamber P: Pump Port (Suction) T: Tank Ports W1015272 3TAAAAF8P030B D.C. The implement control system circuit has a relief valve to restrict the maximum pressure in the circuit.
PAGE 250
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM • Relief Valve Operating (1) (2) (3) (4) (5) (3) Hydraulic Pump Gear Hydraulic Pump Case Plug Flow Priority Valve Relief Valve EF :EF Port (To 3 Points Hitch Control Circuit) PF :PF Port (To Power Steering, PTO Clutch and HST Circuit) D.C.:Damplng Chamber P: Pump Port T: Tank Ports W1016573 3TAAAAF8P031 A D.C.
PAGE 251
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM 6. HYDRAULIC CYLINDER 3TAAAAF8P027B (1) Lift Arm (2) Hydraulic Arm (3) Hydraulic Arm Shaft (4) Hydraulic Rod (5) (6) (7) (8) Piston Spring Ball Lowering Speed Adjusting Shaft (9) Back-up Ring (10) O-ring (11) Hydraulic Cylinder (12) Control Valve P: Pump Port C : Cylinder Port The main components of the hydraulic cylinder are shown in the figure above.
PAGE 252
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM 7. HYDRAULIC BLOCK TYPE OUTLET The hydraulic block type outlet is located on the hydraulic cylinder assembly. This hydraulic block type outlet is provided to take power out from the tractor to operate the hydraulic cylinders on the implement, such as front end loader, front snow blade and so on, A (1) (2) (1) Block Cover (2) Hydraulic Cylinder (3) Hydraulic Block P: P Port (Pump) P.B. :P.B.
PAGE 253
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM 8. MOWER LINKAGE I 0 0 0 0 CJ 0 a 41 0 0 a 0 0 0 0 0 o 0 (4) (5) (6) (7) (-J , (8) \.
PAGE 254
PAGE 255
SERVICING CONTENTS 1. 2. 3. 4. TROUBLESHOOTING ....................................................................................5-S1 SERVICING SPECIFICATIONS .................................................................... 5-S2 TIGHTENING TORQUES .............................................................................. 5-S3 CHECKING, DISASSEMBLING AND SERViCiNG ...................................... 5-S4 [1] CHECKING AND ADJUSTING ...............................................................
PAGE 256
PAGE 257
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM 1.
PAGE 258
BX25, RCK54(P)-23BX. RCK60B·23BX, lA240. BT601, WSM HYDRAULIC SYSTEM 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit - Relief Valve Setting Pressure 12.3 to 12.7 MPa 125 to 130 kgf/cm 2 1778 to 1849 psi Hydraulic Pump Condition • Engine Speed: 1500 min- 1 (rpm) Oil Temperature: 45 to 55°C 113 to 131°F Power steering oil flow Above 8.0 Llmin. 2.1 U.S.gals/min. 1.8 Imp.gals/min . Mower Linkage Clearance L2 [Hydraulic Pump] Gear to Casing Clearance . oto 0.5 mm oto 0.
PAGE 259
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-8.) Item ROPS mounting nut Fuel tank stay mounting bolt and nut Fender bracket mounting bolt Hydraulic cylinder block mounting bolt Hydraulic pump mounting bolt (M6) Hydraulic pump mounting bolt (M8) N'm kgf'm ft·lbs 124 to 147 48.1 to 55.9 124 to 147 39.2 to 44.1 8.
PAGE 260
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM HYDRAULIC SYSTEM 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING (1) Relief Valve Relief Valve Setting Pressure 1. Disconnect the hydraulic hose (1). 2. Install the hose and adaptor A and B (3) with pressure gauge (2). 3. Start the engine and set at maximum speed. 4. Move the control lever all way up to operate the relief valve and read the gauge. 5.
PAGE 261
BX25, RCK54{P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM (2) Pump and Priority Valve Checking Hydraulic Oil Flow • IMPORTANT • Use the instruction with the flowmeter when you use the flowmeter. • While testing, do not close the flowmeter loading valve completely. • NOTE • To measure the flow volume of pump, oil flow on the power steering system side should be stopped. 1. Remove the pump hose. 2.
PAGE 262
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM (3) Mower Lift Linkage Mower Lift Linkage After reassembling the mower lift linkage, be sure to adjust it as follows. 1. Check the lift arm free play. 2. Loosen the adjusting nut (1) and start the engine. 3. Move the hydraulic control lever to Lift position until the relief valve operating. (Uppermost position) 4. Adjusting bolt (2) until the clearance between stopper and mower rear link LH gets a to 0.5 mm (0 to 0.019 in.) 5.
PAGE 263
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM [2] PREPARATION • Before proceeding this section, disassembling the loader assembling and backhoe. (Refer to section 8 and 9.) (1) Separating Hydraulic Cylinder Battery A CAUTION • When disconnecting the battery cables, disconnect the negative cable from the battery first. When connecting, connect the positive cable to the battery first. 1. Remove the under panel (1). 2. Disconnect the negative cable (2) from the battery.
PAGE 264
HYDRAULIC SYSTEM BX25, RCK54(P)-23BX, RCK60B-23BX, lA240, BT601, WSM Lever Grips and Fender 1. Disconnect the electric outlet connector (6). 2. Remove the lowering speed adjusting knob (5) and cutting height adjusting dial knob (4). 3. Remove the lever grips (2). 4. Remove the fender (1) with lever guide (3). (1) Fender (2) Lever Grip (3) Lever Guide (4) Cutting Height Adjusting Dial Knob (5) Lowering Speed Adjusting Knob (6) Electric Outlet W1014865 Fuel Tank 1. Drain the fuel. 2.
PAGE 265
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM Hydraulic Cylinder Block 1. Disconnect the mower linkage (1). 2. Remove the wireharness clamp and wireharness (3) move to the front side. 3. Remove the connecting bar (2). 4. Remove the hydraulic cylinder block mounting bolt. 5. Remove the hydraulic cylinder block (4). (When reassembling) Tightening torque (1) Mower Linkage (2) Connecting Bar Hydraulic cylinder block mounting bolt 39.2 to 44.1 N'm 4.0 to 4.5 kgf·m 28.9 to 32.
PAGE 266
HYDRAULIC SYSTEM BX25, RCK54(P}-23BX, RCK60B-23BX, lA240, BT601, WSM Roll-Over Protective Structures (ROPS) and Seat 1. Disconnect the lead wires from the hazard lights (2), (4) and turn signal lights (3), (5). 2. Remove the ROPS mounting nuts, and remove the ROPS (1). 3. Disconnect the seat switch connectors. 4. Remove the snap pin (7) and remove the seat (6).
PAGE 267
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM Fender Center Stay 1. Remove the fender bracket (2). 2. Remove the fender center stay (1). (When reassembling) Tightening torque (1) Fender Center Stay Fender bracket mounting bolt 124 to 147 N'm 12.6 to 15.0 kgf·m 91.2 to 108 ft-Ibs (2) Fender Bracket W1020490 Hydraulic Cylinder Block 1. Disconnect the rear lift link LH (1). 2. Remove the wireharness clamp and move the wireharness (3) forward. 3. Remove the connecting bar (2). 4.
PAGE 268
HYDRAULIC SYSTEM BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Hydraulic Pump 1. Remove the hydraulic pipe (2) and disconnect the hose (1). 2. Remove the hydraulic pump (3). Hydraulic pump mounting bolt (M6) S.O to 9.0 N'm 0.S2 to 0.91 kgf·m 6.0 to 6.6 ft-Ibs Hydraulic pump mounting bolt (MS) 1S.0 to 21.0 N'm 1.S4 to 2.14 kgf·m 13.3 to 15.
PAGE 269
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM [3] DISASSEMBLING AND ASSEMBLING (1) Hydraulic Cylinder and Control Valve Control Valve 1. Remove the control valve (1). 2. Remove the internal snap ring (4) and draw out the spool (2). (1) Control Valve (2) Spool (3) Plain Washer (4) Internal Snap Ring W1030131 3) Or/' ) (4) 3TAAAAF8P014A Control Valve Lever 1. Pull out the pin (1). 2. Remove the control valve lever (3) and arm (2).
PAGE 270
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM Hydraulic Piston 1. Inject the compressed air into the hydraulic cylinder, and take out the hydraulic piston (1). (When reassembling) • Take care not to damage the O-ring (3) and backup ring (2). • Apply transmission fluid to the O-ring. • Replace the O-ring if it is defective, worn or scratched. which may cause oil leakage. (1) Hydraulic Piston (2) Back-up Ring (3) O-ring W1031555 Lowering Speed Adjusting Valve 1.
PAGE 271
BX25, RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM HYDRAULIC SYSTEM (2) Mower Lift Linkage Disassembling Mower Linkage (1 ) (2) (3) (4) (1) Mower Rear Link, RH (2) Lift Link Rear, RH (3) Cutting Height Adjusting Dial Knob (4) Cutting Height Adjusting Rod (5) Lift Arm, LH (6) Link Adjusting Bolt (7) Lift Link Rear, LH (8) Mower Rear Link, LH (9) Adjusting Cam W1032616 3TAAAAG8P017A 1. 2. 3. 4. 5. Remove the clevis pin and remove the mower rear link (7).
PAGE 272
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM [4] SERVICING (1) Hydraulic Pump Clearance between Tip of Gear Tooth and Casing 1. Measure the gear 0.0. with an outside micrometer. 2. Measure the casing 1.0. with a cylinder gauge and calculate the clearance. 3. If the clearance exceeds the allowable limit. replace the assembly. I C!earancetoothbetween tip and caSing Allowable limit 0.15 mm 0.0059 in. Gear 0.0. Factory spec. 33.520 to 33.530 mm 1.3197 to 1.3200 in. Case 1.0.
PAGE 273
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM HYDRAULIC SYSTEM (2) Hydraulic Cylinder Hydraulic Cylinder Bore 1. Check the cylinder internal surface for scoring or damage. 2. Measure the cylinder 1.0. with a cylinder gauge. 3. If the measurement exceeds the allowable limit, replace the hydraulic cylinder block. Factory spec. 80.05 to 80.15 mm 3.1516to 3.1555 in. Allowable limit 80.2 mm 3.1575 in. Cylinder I.D. W10171300 3TAAAAF8P043A Hydraulic Arm Shaft Bushing 1.
PAGE 274
PAGE 275
MECHANISM CONTENTS 1. WIRING DIAGRAM ...................................................................................... 6~M1 2. STARTING SYSTEM .................................................................................... 6-M3 [1] MAIN SWITCH POSiTION ..................................................................... 6~M3 [2] SAFETY SWiTCH ................................................................................... 6-M4 [3] OPERATOR PRESENCE CONTROL (OPC) ..............................
PAGE 276
PAGE 277
BX25. RCK54(P)-23BX, RCK60B-23BX. LA240, BT601, WSM 1. WIRING DIAGRAM Oil Pressure Glow Lamp ~ Illumination ~ Blinker (L) ¢ H( o Water Temperature Gauge 20WY Hazard Lamp (23W) Tail Light (12.8W) 20LW Tail Light (12.8W) 20G 208 20R as; O. N' 180r 188 ope Timer 70RW Head Light (37.5W) 180r 188 Fuse lOA 20RL lOA 20Y 20Y ...L 20Y Seat LOY a: ;::' R-PTO 50A t 3: a: a: ;::' :'! a: Ol Safety Switch ON BAT (IGIM OFF STOP' ON RUN GLOW START 3TAAMJ9P001A 20Y Starter Motor 12V O.
PAGE 278
FLECTRICAl SYSTEM Battery Charge .'Iok", (R) rur ~~?eiaCh, ~ Gro,"" L,mp e:!I ¢ fi~ ignition (Switched Power) FuelSensorSiQnaL ~ I r- ~ 5 S 7 'HI 8 9 - 10 11 12 13 1 I 112 11 )(I91s. 5 " 31211 I :J - ~~t FUEL Fuel Gauge 20Yl 20RY l Water Tern Left Tum SiQnal Riaht Turn SiQnal NC Batterv CharQe Glow NC Enaine Oil Pressure Tach, Sional Back UahtinQ 121 11 !XI I I ...
PAGE 279
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM Color of Wiring W .......... White WR ....... " .. White I Red BW ......... Black I White R ........... Red WY ........... White I Yellow BR .......... Black I Red L ........... Blue RB ........... , Red I Black GW ........ Green I White P ........... Pink RW ............ Red I White YR .......... Yellow I Red B ........... Black RG ............ Red I Green YL .......... Yellow I Blue Br .......... Brown RY .............
PAGE 280
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM 2.
PAGE 281
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM [2] SAFETY SWITCH There is one type of safety switch, normally closed type. Normally closed type switch is electrically closed in normal condition. Safety switches adopted in BX25 tractor operates as sensor detecting and transmitting the position of HST pedal, PTO lever, independent PTO lever, and seat to engine stop solenoid.
PAGE 282
ELECTRICAL SYSTEM BX25, RCK54(P)-23BX. RCK60B-23BX, LA240, BT601, WSM Lever I Pedal Position, Engine Condition and Switch Condition Lever I Pedal Position No.
PAGE 283
BX25. RCK54(P)-23BX. RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM [3] OPERATOR PRESENCE CONTROL (OPC) The BX25 Tractor equips operator presence control (Ope) system which automatically stops the engine when operator stands up from the operator's seat while shifting the PTO lever or the speed control pedal. Tractor without the ope timer stops quickly and tractor with the ope timer stops in approximately one second when standing up from the seat.
PAGE 284
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM ELECTRICAL SYSTEM 3. CHARGING SYSTEM [1] ELECTRICAL CIRCUIT (1) ·· ·· 208 SA 1 lSflY lORY • 14RB "RS 1<. ,.Rl 209 3TAAAAF9P003A (8) (4) (1) Illumination Light (2) Battery Charge Lamp (3) Fuse (4) Main Switch (5) Slow Blow Fuse (6) Battery (7) Alternator (8) Frame Earth The charging system supplies electric power for various electrical devices and also charges the battery while the engine runs.
PAGE 285
ELECTRICAL SYSTEM BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM [2] IC REGULATOR (3P CONNECTOR TYPE) A 3P connector is connected to the Ie regulator. 3P connector consists of three leads, Sb (Sky Blue) lead (1), RY (Red I Yellow) lead (2), and WR (White I Red) lead (3). Sb (Sky Blue) lead (1) is a lead to transmit the puis from the alternator to hour meter and tachometer. When turning on the main switch to "ON" position. the hour meter indicates operated hours.
PAGE 286
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601, WSM ELECTRICAL SYSTEM 4. LIGHTING SYSTEM (2) (1) (3) (4) (5) (6) -& i\ ~ r:> E!I (15) ro. HHW I ~O~A~14~R.~____________________________~-+ 148 __~__~-4___'~4R~.__~ (22) 50A 3TAAAAF9POO6A (1) (2) (3) (4) (5) (6) (18) Illumination Light Oil Pressure Lamp Glow Lamp Blinker (Left) Blinker (Right) Battery Charge Lamp (7) Water Temperature Gauge (8) Fuel Gauge (9) Tail Light (12.
PAGE 287
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM 5. GAUGES [1] ELECTRICAL CIRCUIT (1 ) o (6) 1SA '8RY a: N SOA (9) 3TAAAAF9P007A (1) Hour and Tachometer (2) Water Temperature Gauge (3) Fuel Gauge (4) Thermo Unit (5) Fuel Sensor (6) Fuse (7) Main Switch (8) Battery (9) Frame Earth The fuel quantity is indicated by the fuel gauge. The coolant temperature is indicated by the water temperature gauge.
PAGE 288
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM [2] HOUR AND TACHOMETER The electrical hour meter and tachometer is equipped on the meter panel. This meter indicates the operated hours when the main switch is turned to "ON" position. After starting the engine, this meter indicates the present engine revolution. The meter picks up the voltage from the Ie regulator located in the alternator. The Ie regulator sends a signal of the engine revolution to the meter.
PAGE 289
BX25, RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM ELECTRICAL SYSTEM [4] WATER TEMPERATURE GAUGE Be Water temperature gauge is located on the meter panel board. The water temperature gauge and the thermo unit are connected by the wiring. The water temperature gauge detects the resistance from the thermo unit. The water temperature gauge indicates the coolant temperature in the engine cylinder head.
PAGE 290
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM 6. OTHERS [1] DC OUTLET DC outlet is equipped to this machine. The capacity of the DC outlet is 12 V I 120 W. The electrical device as a CD player, a mobile phone battery charger can be used to the DC outlet. The DC outlet (1) consists of the DC outlet body (3) and the cover (4).
PAGE 291
SERVICING CONTENTS 1. 2. 3. 4. TROUBLESHOOTING ....................................................................................6-S1 SERVICING SPECIFICATIONS .................................................................... 6-S5 TIGHTENING TORQUES .............................................................................. 6-S6 CHECKING, DISASSEMBLING AND SERVICING ...................................... 6-S7 [1] CHECKING AND ADJUSTING ...............................................................
PAGE 292
PAGE 293
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM 1.
PAGE 294
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM OPERATOR PRESENCE CONTROL (OPC) Symptom Engine Does Not Stop Probable Cause Solution Reference Page Solenoid fuse blown (15A) Replace G-31 Timer replay defective Replace 6-S15 Engine stop solenoid defective Replace 6·S15 PTO shift lever switch defective Adjust or replace 6·S12 Independent PTO lever switch defective Adjust or replace 6-S12 HST pedal switch defective Adjust or replace 6-S12 Wiring harness disconnecte
PAGE 295
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM LIGHTING SYSTEM Symptom Probable Cause Fuse blown (15 A) Head Light Does Not Light Solution Reference Page Replace G-31 Bulb blown Replace G-31 Wiring harness disconnected or improperly connected (between main switch AC terminal and head light switch, between head light switch and head light) Repair or Replace Fuse blown (15 A) Replace G-31 Bulb blown Replace G-31 Wiring harness disconnected or improperly connected (b
PAGE 296
ELECTRICAL SYSTEM BX25. RCK54(P)-23BX, RCK60B-23BX, LA240. 8T601.
PAGE 297
ELECTRICAL SYSTEM BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Voltage More than 12 V Potential Difference Less than 0.1 V - Glow Plug Resistance Approx. 0.9 n - Seat Stay to Seat Reverse Switch Clearance 9 to 11 mm 0.355 to 0.433 in.
PAGE 298
BX25, RCK54(P)-23BX. RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-B.) Item N-m kgf-m ft-Ibs 5.9 to 11.B 0.6 to 1.2 4.3 to B.
PAGE 299
BX25. RCK54(P)-23BX. RCK60B-23BX, LA240. 6T601. WSM ELECTRICAL SYSTEM 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING A • • • • • • CAUTION To avoid accidental short circuit, be sure to attach the positive cable to the positive terminal before the negative cable is attached to the negative terminal. Never remove the battery cap while the engine is running. Keep electrolyte away from eyes, hands and clothes. If you are spattered with it, wash it away completely with water immediately.
PAGE 300
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM Battery Specific Gravity 1. Check the specific gravity of the electrolyte in each cell with a hydrometer. 2. When the electrolyte temperature differs from that at which the hydrometer was calibrated, correct the specific gravity reading following the formula mentioned in (Reference). 3. If the specific gravity is less than 1.215 (after it is corrected for temperature), charge or replace the battery. 4.
PAGE 301
BX25, RCK54(P}-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM Main Switch Continuity 1) Main Switch Key at OFF Position 1. Set the main switch OFF position. 2. Measure the resistance with an ohmmeter across the B terminal and the ACC terminal, B terminal and ST terminal, B terminal and G terminal. 3. If infinity is not indicated, the contacts of the main switch are faulty.
PAGE 302
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM (3) Starter Motor Test A 3TMABAB9P007 A CAUTION • Secure the starter to prevent if from jumping up and down while testing the motor. 1. Disconnect the battery negative cable from the battery. 2. Disconnect the battery positive cable and the leads from the starter. 3. Remove the starter from the engine. 4. Disconnect the connecting lead (2) from the starter C terminal (1 ). 5.
PAGE 303
ELECTRICAL SYSTEM BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Glow Plug Continuity 1. Disconnect the lead from the glow plugs. 2. Measure the resistance with an ohmmeter between the glow plug terminal and the chassis. 3. If 0 ohm is indicated, the screw at the tip of the glow plug and the housing are short-circuited. 4. If the factory specification is not indicated, the glow plug is faulty. Ii Glow plug resistance Factory spec. Approx. 0.
PAGE 304
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM ELECTRICAL SYSTEM HST Neutral Switch Continuity 1. Remove the right rear wheel. 2. Remove the HST neutral switch (1). 3. Measure the resistance with an ohmmeter across the HST neutral switch terminals. 4. If the resistance values specified below are not indicated, the safety switch is faulty . • Plunger is pushed into the switch body Resistance 1 terminal (5) 2 terminal (6) Factory spec. on Resistance 3 terminal (7) 4 terminal (8) Factory spec.
PAGE 305
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM (6) Operator Presence Control (OPC) Switch Seat Switch and Seat Reverse Switch Continuity Check 1. Disconnect the 2P connectors (2) from the seat switch (1) and the seat reverse switch (3). 2. Remove the seat switch and the seat reverse switch. 3. Connect the circuit tester to the terminals (4) . • Seat Switch 1. Measure the resistance between terminals (4). 2. If continuity is not infinity, the switch is faulty. Replace it.
PAGE 306
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM Checking OPC Timer 1. Remove the OPC timer. (The OPC timer is located under the fender center stay.) 2. Connect the jumper leads across the battery terminal and the Red I White terminal (2), and across the battery positive terminal and the Yellow terminal (3). 3. Connect the jumper lead across the battery negative terminal and the Black terminal (5), and across the battery negative terminal and the Blue terminal. 4.
PAGE 307
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (7) ELECTRICAL SYSTEM Fuel Pump Connector Voltage 1. Disconnect the 2P connector from the fuel pump. 2. Turn the main switch key to the "ON" position, and measure the voltage with a voltmeter between the connector terminals. 3. If the voltage differs from the battery voltage, the wiring harness or main switch is faulty. OJ] Voltage tween connector Approx. battery voltage W1016341 3GFABAB9P021 B Fuel Pump Continuity 1.
PAGE 308
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (1 ) F= 1~ 2 4 =:::: (2) -- I 3TAAAAB9P035A (3) ELECTRICAL SYSTEM Test of Timer Relay 1. Remove the timer relay from the tractor. 2. Connect jumper leads across the battery positive terminal and the timer relay terminal 3, and across the battery positive terminal and the timer relay terminal 4. 3. Connect jumper leads across the battery negative terminal and the timer relay terminal 2, and across the battery negative terminal and the bulb terminal.
PAGE 309
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601, WSM ELECTRICAL SYSTEM Slip Ring 1. Check the slip ring for score. 2. If scored, correct with an emery paper or on a lathe. 3. Measure the 0.0. of slip ring with vernier calipers. 4. If the measurement is less than the allowable limit, replace it. , Factory spec. Slip ring 0.0. Allowable limit 14.4mm 0.567 in. 14.0mm 0.551 in. W1045871 3EEABAB1 P195A Brush Wear 1. Measure the brush length with vernier calipers. 2.
PAGE 310
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM (12) Combination Switch Combination Switch 1. Remove the meter panel, and disconnect the combination switch connector. 2. Remove the combination switch (1) and perform the following checks 1) to 8). (1) (2) (3) (4) (5) Combination Switch Red I Yellow Lead Green Lead Black I Blue Lead Blue I White Lead (6) (7) (8) (9) Yellow Lead Orange Lead Red I White Lead Green I White Lead W1049462 1) Connector Voltage 1.
PAGE 311
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM 3) Head Light Switch Continuity when Setting Switch at "ON" Position 1. Set the light switch to the ON position. 2. Measure the resistance with an ohmmeter across the red I yellow lead (1 ) to the orange lead (4) and the red I yellow lead (1) to the yellow lead (3). 3. If infinity is not indicated, the head light switch is faulty.
PAGE 312
ELECTRICAL SYSTEM BX25, RCK54(P}-23BX, RCK60B-23BX. LA240. BT601, WSM 5) Turn Signal Light Switch Continuity when Setting Switch Knob "RIGHT" Position 1. Set the turn signal switch knob to the RIGHT position. 2. Measure the resistance with an ohmmeter across the green lead (1) and red I white lead (2), and across to the green lead (1) and green I white lead (3). 3. If 0 n is not indicated, the combination switch is faulty.
PAGE 313
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM 7) Hazard Switch Continuity when Setting Switch Knob at "OFF" Position 1. Set the hazard switch knob to the OFF position. 2. Measure the resistance with an ohmmeter across the black I blue lead (1) and blue I white lead (2). 3. If infinity is not indicated, the combination switch is fautty.
PAGE 314
ELECTRICAL SYSTEM BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Flasher Unit 1. Remove the under panel. 2. Disconnect the coupler (2) from flasher unit. 3. Measure the voltage with a voltmeter across the terminal hand terminal c or chassis. 4. If the voltage differs from the battery voltage, the wiring hamess is faulty. Terminal h Terminal c or Chassis Voltage (1) Flasher Unit Approx. battery voltage (2) Coupler W1055033 3TAAAAB9P046A I I (1)~ 2!....
PAGE 315
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601. WSM ELECTRICAL SYSTEM Charge Lamp (Charging Circuit) 1. Disconnect the 3P connector from the alternator after turning the main switch OFF. 2. Tum the main switch ON and connect a jumper lead from the wiring harness connector terminal (White I Red) to the chassis . • NOTE • If you connect the jumper lead from the wiring harness connector terminal (White I Red) to the chassis, 15A fuse will be blown. Do not connect the lead to Red I Yellow terminal. 3.
PAGE 316
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM Engine Oil Pressure Switch Continuity 1. Disconnect the lead (2) from the engine oil pressure switch (1). 2. Measure the resistance with an ohmmeter across the switch terminal and the chassis. 3. If 0 ohm is not indicated in the normal state, the switch is faulty. 4. If infinity is not indicated at pressure over 4.9 kPa (0.5 kgf/cm 2 , 7 psi), the switch is faulty.
PAGE 317
ELECTRICAL SYSTEM BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM Hour Meter and Tachometer 1. Disconnect the 3P connector (4) from the IC regulator (9) located in the alternator (5) after starting the engine. 2. Measure the voltage with a voltmeter across the hour meter terminal (6) and the alternator body when the hour meter or tachometer does not indicated the proper value. 3. If the measured voltages differ from the specified voltage, the hour meter and tachometer is faulty.
PAGE 318
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ELECTRICAL SYSTEM (14) DC Outlet DC Outlet Connector Voltage and DC Outlet Continuity 1. Disconnect the connector from the DC outlet. And turn the main switch "ON". 2. Measure the voltage with a voltmeter across the connector red I blue lead and the chassis. If the voltage differs from the battery voltage the wiring harness is faulty. 3. Disconnect the connector from the DC outlet.
PAGE 319
BX25. RCK54(P).23BX, RCK60B·23BX, LA240, BT601, WSM ELECTRICAL SYSTEM Magnet Switch 1. Remove the drive end frame (1) mounting screws. 2. Take out the overrunning clutch (2), ball (3), spring (4), gears (5), rollers (6) and retainer (7). (When reassembling) • Apply grease to the gear teeth of the gears (5) and overrunning clutch (2), and ball (3). (1) (2) (3) (4) 3TAAAAB9P036A Drive End Frame Overrunning Clutch Ball Spring (5) Gear (6) Roller (7) Retainer W1016728 ~ ~~ Plunger 1.
PAGE 320
ELECTRICAL SYSTEM BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM [3] SERVICING (1) Starter Overrunning Clutch 1. Inspect the pinion for wear or damage. 2. If there is any defect, replace the overrunning clutch assembly. 3. Check that the pinion turns freely and smoothly in the overrunning direction and does not slip in the cranking direction. 4. If the pinion slips or does not rotate in the both directions. replace the overrunning clutch assembly. W1016990 3EEABAB1P188A Commutator and Mica 1.
PAGE 321
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, 8T601, WSM ELECTRICAL SYSTEM Brush Holder 1. Check the continuity across the brush holder and the holder support with an ohmmeter. 2. If it conducts, replace the brush holder. W1017672 3EEABAB1P189A Armature Coil 1. Check the continuity across the commutator and armature coil core with an ohmmeter. 2. If it conducts, replace the armature. 3. Check the continuity across the segments of the commutator with an ohmmeter. 4.
PAGE 322
BX25. RCK54(P)-23BX. RCK60B-23BX, LA240. BT601, WSM ELECTRICAL SYSTEM (2) Alternator Bearing 1. Check the bearing for smooth rotation. 2. If it does not rotate smoothly, replace it. W1019790 3EEABAB1 P192A Alternator Components 1. When the alternator does not generator or does not charge the battery, replace the alternator as an assembly.
PAGE 323
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM SAFETY INSTRUCTIONS SAFETY DECALS I The following safety decals are installed on the mower. If a decal becomes damaged, illegible or is not on the mower, replace it. The decal part number is listed in the parts list. [RCK60B-23BX, RCK54-23BX] (A) t (A) Forward (3) Part No. K5763-4715-1 (1) Part No. K5112-7311-1 ACAUTION (2) Part No. K5112-7312-1 ADANGER DO NOT PUT HANDS OR FEET INTO MOWER WHEN ENGINE IS RUNNING.
PAGE 324
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM SAFETY INSTRUCTIONS [RCK54P·23BX] (A) Forward (1) Part No. K5617-731 1-1 [: I ~[ .~ (3) Part No. K5763-4715-1 &DANGER ~ ACAUTION :: ',:- : - -~~[S ~:: ::::.. ,/~ '.... 2 11: '. ~ :,M:\ :,,; fJ: , -. ""' ~ ...... \. I t, • ::~ 1BDABBSAP0030 (2) Part No. K5617-7312-1 1BDABBSAP0020 CARE OF DANGER, WARNING AND CAUTION LABELS 1. 2. 3. 4. 5. Keep danger, warning and caution labels clean and free from obstructing material.
PAGE 325
TERMINOLOGY BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM TERMINOLOGY [RCK60B-23BX, RCK54-23BX] (8) (9) (10) (11 ) 3TAAAAFFP001 A (1) (2) (3) (4) Front Anti-scalp Roller Belt Cover (Left) Gear Box Belt Cover (Right) (5) Discharge Deflector (6) Universal Joint (7) Deck (8) Outer Blade (Right) (9) Center Anti-scalp Roller (10) Center Blade 7-3 (11) Outer Blade (Left) (12) Rear Anti-scalp Roller (13) Self-balancer (RCK60B-23BX only)
PAGE 326
TERMINOLOGY BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM [RCK54P-23BX) (8) (9) (10) (12) 3TAAAAFFP003A (1) Front Anti-scalp Roller (2) Belt Cover (Left) (3) Gear Box (4) Belt Cover (Right) (5) Discharge Deflector (6) Universal Joint (7) Deck (8) Outer Blade (Right) (9) Center Anti-scalp Roller 7-4 (10) Center Blade (11) Outer Blade (Left) (12) Rear Anti-scalp Roller
PAGE 327
BX25, RCK54(P)-23BX, RCK60B-23BX, lA240, BT601, WSM SPECIFICATIONS SPECIFICATIONS Model RCK60B-23BX RCK54P-23BX RCK54-23BX Quick-Joint, Parallel linkage Mounting method Self-balance suspended linkage Suspended linkage Adjustment of cutting height Cutting width Dial gauge 1524 mm (60 in.) 1375 mm (54 in.) Cutting height 1372 mm (54 in.) 25 to 102 mm (1.0 to 4.0 in.) Weight (Approx.) 115 kg (250 Ibs) 86 kg (190 Ibs) 95 kg (210 Ibs) Blade spindle speed 44.1 rls (2647 rpm) 49.
PAGE 328
PAGE 329
MECHANISM CONTENTS 1. POWER TRANSMISSION ............................................................................ 7-M1 2. LIFTING MECHANISM ................................................................................. 7-M2 3. SELF-BALANCER SYSTEM .........................................................................
PAGE 330
PAGE 331
ROTARY MOWER BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM 1.
PAGE 332
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ROTARY MOWER 2. LIFTING MECHANISM \ 0 0 o 0 ) J 0 0 0 , /' 3TAAAAFMP002A (1) Front Link (2) Rear Link (1 ) (2) (3) Lift Link (4) Rear Lift Link (RH) (3) (4) (5) Rear Lift Link (LH) (5) (6) (6) Lift Arm The lifting of mower is performed by the hydraulic system installed on the tractor. The mower should be kept lift when traveling.
PAGE 333
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ROTARY MOWER 3. SELF-BALANCER SYSTEM This system reduces the stepped differences in cutting height when mowing rolling terrain. 3TAAAAFMP003A 3TAAAAFMP004A (A) • Self-Balancer 1. The mower deck is held in place via the balancer plate (4) and the support by the rear link (1), (2). 2. The mower deck is suspended by, and is tilted to the right and left by, the balancer support (5).
PAGE 334
PAGE 335
SERVICING CONTENTS 1. GENERAL ....................................................................................................... 7-S1 [1] MOWER IDENTIFICATION ..................................................................... 7-S1 [2] LUBRICANTS ...........................................................................................7-S2 [3] TIGHTENING TORQUES (GENERAL USE SCREWS, BOLT AND NUTS) ......................................................................................................
PAGE 336
PAGE 337
BX25. RCK54(P)-23BX, RCK60B-23BX. LA240, BT601, WSM ROTARY MOWER 1. GENERAL [1] MOWER IDENTIFICATION When contacting your local KUBOTA distributor, always specify mower serial number.
PAGE 338
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601. WSM ROTARY MOWER [2] LUBRICANTS No. 1 Place Capacity RCK60B·23BX RCK54-23BX 0.36 L 0.38 U.S.qts 0.32 Imp.qts RCK54P-23BX 0.15 L 0.16 U.S.qts 0.13Imp.
PAGE 339
BX25. RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ROTARY MOWER [3] TIGHTENING TORQUES (GENERAL USE SCREWS, BOLT AND NUTS) Screws, bolts and nuts whose tightening torques are not specified in this Workshop Manual should be tightened according to the table below. Indication on top of bolt 0 @ Material of bolt Material of opponent part ~it Diameter M6 (6 mm, 0.24 in.) M8 (8 mm, 0.31 in.) M10 (10 mm, 0.39 in.) M12 (12 mm, 0.47 in.) M14 (14 mm. 0.55 in,) M16 (16 mm, 0.63 in.) M18 (18 mm, 0.71 in.
PAGE 340
ROTARY MOWER BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM [4] MEINTENANCE CHECK LIST To keep the mower working in good condition as well as to avoid any accident and trouble, carry out periodic inspection and maintenance. Check the following points before use.
PAGE 341
BX25. RCK54(P)-23BX. RCK60B-23BX. lA240, BT601, WSM ROTARY MOWER [5) CHECK AND MAINTENANCE (1) Check Points of Daily or Each Use Retightening Mower Blade Screw A • 1. 2. (1 ) 3GMAAACMP007A 3. 4. CAUTION To avoid injury, always handle the mower blade with care. Dismount the mower and turn it over to expose the mower blades. Wedge a block of wood securely between the mower blade and mower deck. Retighten the mower blade screw to the specified torque. If the mower blade screw is worn or broken.
PAGE 342
ROTARY MOWER BX25, RCK54(P)-23BX, RCK60B-23BX. LA240, BT601, WSM [A] (1 ) Greasing Spindle Shafts, Belt Tension Pivot and Tension Pulley 1. Grease the grease nipples (1). (2) of the spindle shafts if the amount of grease is insufficient. (1) Grease Nipple (Spindle Shaft) (2) Grease Nipple (Belt Tension Pulley) (3) Grease Nipple (Belt Tension Pivot) [A] RCK60B-23BX. RCK54-23BX [B] RCK54P-23BX W1013808 (3) 3TAAAAFMP024A (2) [8] (3) 3TAAAAFMP025A Greasing Balance Shaft (RCK60B-23BX) 1.
PAGE 343
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ROTARY MOWER (2) Check Point of Initial 50 Hours Changing Gear Box Oil A CAUTION • Be sure to stop the engine and remove the key before changing the oil. [RCK60B-23BX, RCK54-23BX] 1. Dismount the mower from the tractor, and place the mower on level ground. 2. Remove the oil filler plug (2). 3. Remove the drain plug (1), and drain the used oil completely. 4. After draining the used oil, reinstall the drain plug. 5.
PAGE 344
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ROTARY MOWER [6] SETTING UP MOWER Assembling Mower 1. Place the mower on blocks as illustrated. Turn the anti-scalp rollers sideways and attach to the arms of the deck at the upper position with clevis pins and snap rings. Remove the blocks. 2. Attach the discharge to the deck with the spring, discharge pin and cotter pin. Secure the spring to the discharge deflector as illustrated.
PAGE 345
ROTARY MOWER BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Universal Joint 1. Pull back the coupler (3) of the universal jOint (2). 2. Push the universal joint (2) onto the mid-PTO shaft (1), until the coupler locks. 3. Slide the universal joint back and forward to make sure the universal jOint is locked securely . • IMPORTANT • Finally, tug on the universal joint to make sure it is locked on the PTO shaft.
PAGE 346
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ROTARY MOWER Front Link 1. Hook the front link (1) to the front bracket groove (2) as shown in the figure. (Reference) • Make sure the length (L) of the front link (1) is 47 mm (1.85 in.). (1) Front Link (2) Front Bracket Groove W1017424 3TAAAAFMP033A (6) 3TAAAAFMP035A Mounting Front Link 1. Position the front lever to the front link bracket. 2. Pull and lock the L pin. Then lower the front lever. 3.
PAGE 347
ROTARY MOWER BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM [7] MOWER ADJUSTMENT A • • • • CAUTION Park the tractor on a firm, flat and level surface and set the parking brake. Stoop the engine, remove the key, and allow the blades to stop before making adjustments. Wear heavy gloves or wrap end of blade with a rag when you handle blades. Before starting the engine, set the PTO clutch lever to off position and range gear shift lever to the neutral position. Adjusting Mower Link 1.
PAGE 348
ROTARY MOWER BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Adjusting Front and Rear Cutting Height 1. Tire pressure must be correct. 2. Make sure the level of the mower blades is adjusted as shown below. Then tighten the lock nuts securely. 3. Turn the cutting height control dial to "2.0" and the anti-scalp roller's height to keep clearance between rollers and ground from 6 to 13 mm (0.25 to 0.5 in.). 4. Turn right blade by hand parallel to direction of travel. 5.
PAGE 349
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601! WSM ROTARY MOWER Adjusting Left and Right Cutting Height 1. Tire pressure must be correct. 2. Operate the hydraulic control lever (2) rearward to raise the mower deck to the highest position. 3. Stop the engine and remove the key. 4. Turn the cutting height control dial to the desired height. 5. Set the anti-scalp roller's height to keep clearance between rollers and ground from 6 to 13 mm (0.2 to 0.5 in.). 6.
PAGE 350
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (3) -r-'~-(4) L (2) ~~-(4) ROTARY MOWER Adjusting Self-Balance Suspended Linkage (RCK60B-23BX Only) 1. Check the length (L) of balancer spring (2). 2. If the length (L) is not within the factory specification, adjust the length of balancer spring (2) with lock nut (3) . • NOTE • Check the left and right cutting height difference after adjusting the self-balancer linkage.
PAGE 351
ROTARY MOWER BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Cutting Height A • • • 1. 2. 3. 4. 5. 3TAAAAFMP016A n 6. (3) A B C-----J.;:; DANGER Never operate the mower in transport position . IMPORTANT (for self-balance suspended linkage) To reduce the stepped difference in cutting height when mowing rolling terrain, follow the procedure below. To set the cutting height, move the hydraulic control lever rearward to raise the mower to the highest position.
PAGE 352
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM ROTARY MOWER 2.
PAGE 353
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ROTARY MOWER 3. SERVICING SPECIFICATIONS Item Input Shaft (without Mower Belt) Bevel Gears in Gear Box Factory Specification Turning Force Less than 117.7 N 12.0 kgf 26.51bs Turning Torque Less than 1.47 N'm 0.15 kgf·m 1.08 ft-Ibs Backlash (RCK54-23BX, RCK60B-23BX) (RCK54P-23BX) Allowable Limit - 0.1 to 0.2 mm 0.0039 to 0.0078 in. 0.4 mm 0.0157 in. 0.13 to 0.25 mm 0.0051 to 0.0098 in. 0.4 mm 0.0157 in.
PAGE 354
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, 8T601, WSM ROTARY MOWER 4. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page 7-S3.) [RCK54-23BX, RCK60B-23BX] Item kgf·m ft-Ibs 7.9 to 9.2 57.1 to 66.5 102.9 to 117.7 10.5 to 12.0 75.9 to 86.8 77.4 to 90.2 7.9 to 9.2 57.1 to 66.5 196.17 to 225.6 20.0 to 23.0 144.7 to 166.4 Gear box bracket (RH) mounting bolt and nut 77.4 to 90.2 7.9 to 9.
PAGE 355
ROTARY MOWER BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM 5. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING 3GFABABMP023A Checking Mower Blade 1. Check the cutting edge of mower blade. 2. Sharpen the cutting edges, if the mower blades are as shown in figure (2). 3. Replace the mower blades, ifthey are as shown in figure (3) . • IMPORTANT • Never forget to set the dust cover, cup washer(s) and lock washer (RCK54-23BX, RCK60B-23BX), when reassembling the mower blades.
PAGE 356
ROTARY MOWER BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM [2] DISASSEMBLING AND ASSEMBLING Universal Joint and Belt Cover 1. Unscrew the universal joint screw. 2. Remove the universal joint (1). 3. Remove the left and right belt covers (2), (3). (1) Universal Joint (2) Belt Cover (Left) (3) Belt Cover (Right) W1012580 (2) (3) Mower Blades (Center Blade and Outer Blades) 1. Turn over the mower. 2.
PAGE 357
BX25. RCK54(P)-23BX. RCK60B-23BX, LA240, BT601, WSM Blade Boss 1. Remove the external snap ring (2). 2. Remove the blade boss (1). (A) (1k.... ROTARY MOWER ~ (1) Blade Boss (2) External Snap Ring (A) RCK54P-23BX (B) RCK54-23BX, RCK60B-23BX W1012871 (2)~ 3GZAAADMP011A (8) (1 ) (2) 3GMAAABMP044B Gear Box and Mower Belt 1. Turn over the mower. 2. Remove the mower belt (3) from the tension pulley (5). 3.
PAGE 358
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM 3GMAAACMP013B ROTARY MOWER Disassembling Gear Box (RCK54-23BX, RCK60B-23BX) 1. Unscrew the drain plug (19). and drain the gear box oil. 2. Remove the center pulley (23) with a puller, and remove the feather key (22) on the bevel gear shaft. 3. Remove the gear box caps (7), (8). 4. Remove the oil seal (13). internal snap ring (14) and shim (15). 5. Tap out the pinion shaft (17) with the ball bearing (16), and remove the bevel gear (1). 6.
PAGE 359
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (A) (8) (5)--t '1-_::...--(9) (1)"....... (2) (3) e .....:0 (4)---@;l 3GMAAACMP038B ROTARY MOWER Center Pulley Holder 1. Unscrew the center pulley holder screws (1). (15) I center pulley nut (5). (11). 2. Remove the upper oil seal (6) and lower oil seal (4). 3. Remove the internal snap ring (3) and ball bearing (2). (When reassembling) • Replace the oil seals (4). (6) with new ones .
PAGE 360
BX25, RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM (A) (1) (2) -__..o. (3)--~ 1 (4)---®1Yi (5) ROTARY MOWER Outer Pulley and Blade Shaft (To be continued) (7) 1. Unscrew the outer pulley mounting nut (21). and remove the outer pulley (27). 2. Unscrew the pulley holder mounting nut (29), and remove the left pulley holder (34). 3. Remove the oil seal (37) and tap out the left blade shaft (38) with the ball bearings (36). (32). taking care not to damage the grease nipple (20). 4.
PAGE 361
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM ROTARY MOWER Outer Pulley and Blade Shaft (Continued) (8) (1 ) (2) (3) ____(4) 1. Unscrew the blade side pulley mounting nut (11). and remove the blade side pulley (12). 2. Unscrew the pulley holder mounting bolts (18). and separate the right pulley side holder (5) from the mower deck. 3. Remove the oil seal (8) and tap out the right blade shaft (9) with the ball bearings (4), (7), taking care not to damage the grease nipple (10). 4.
PAGE 362
ROTARY MOWER BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM [3] SERVICING Turning Torgue of Pinion Shaft 1. Remove the mower belt, and reassemble the gear box to the mower deck. 2. Wind a string around the pinion shaft and set a spring balance (or push-pull gauge) to the tip of the string, and then slowly pull the spring balance horizontally to measure the turning force. 3. If the measurement exceeds the factory specification, check the bearing and gears and adjust the adjusting shims (1), (2), (3).
PAGE 363
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (1) (2) (3) (4) (5) ROTARY MOWER Backlash between Bevel Gears 1. Remove the gear box cap (3). 2. Place fuses the bevel gear (2) on the input shaft (5). 3. Turn the input shaft (5). 4. Take out the fuses. and measure the thickness of fuses with an outside micrometer. (Backlash equal thickness of fuse) 5. If the backlash exceeds the allowable limit, adjust with shims (1), (4), (6). [RCK54-23BX, RCK60B-23BX] Backlash between bevel gears Factory spec.
PAGE 364
PAGE 365
MECHANISM CONTENTS 1. HYDRAULIC CiRCUiT .................................................................................. 8-M1 2. CONTROL VALVE ASSEMBLy ..... .............................................................. 8-M2 [1] STRUCTURE ........................................................................................... 8-M2 [2] OPERATION ........ .................................................................................... 8-M3 3. BOOM CYLINDER AND BUCKET CYLINDER .....................
PAGE 366
PAGE 367
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM FRONT LOADER 1. HYDRAULIC CIRCUIT (1) (2) (3) (4) (5) (1 ) r'-'-'-'- -----.-.----.-.-.-----......, P.B.¢------\------. 2B ...-------------9=;;:;......----, (2) (3) Bucket Control Valve Bucket Cylinder Boom Cylinder Boom Control Valve Control Valve Assembly P: From Pump P.B.
PAGE 368
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM FRONT LOADER 2. CONTROL VALVE ASSEMBLY [1] STRUCTU RE (1 ) (3) (4) (2) B2 A2 P.B. I I I I ! (3) 3TAAAAGLP002A (1) (2) (3) (4) Inlet and Outlet Section Boom Control Valve Bucket Control Valve Power Beyond B1 A1 P: P Port (From Pump) T: T Port (To Tank) A1 : A1 Port A2:A2 Port B1 : B1 Port B2: B2 Port P.B. :P.B. Port The control valve assembly is composed of one casting block and four major section as shown above.
PAGE 369
BX25, RCK54(P)-23BX, RCK60B-23BX, lA240, BT601, WSM FRONT LOADER [2] OPERATION • Neutral P.B..... "" .... , .......---~ r::======E:::-, (2) P T B1 ~:a 3TAAAAGLP017A (1) (2) (3) (4) Boom Control Section Bucket Control Section Spool Spool (5) P.B. Passage 1 (6) P.B. Passage 2 (7) Load Check Valve T: T Port (To Tank) P: P Port (From Pump) Ai: Ai Port A2: A2 Port 8-M3 B1 : B1 Port B2: B2 Port P.B. :P.B.
PAGE 370
FRONT LOADER BX25, RCK54(P)-23BX, RCK60B-238X, LA240, 8T601, WSM • Up P.B.;..------""""ir---------~::....--___. (2) P T 81 (4) (5) _:b fl~i~;[;[;;'i;;;;;i~;';11 3TAAAAGLP018A (1) (2) (3) (4) Boom Control Section Bucket Control Section Spool P.B. Passage 1 (5) (6) (7) (8) Neutral Passage 1 Load Check Valve Passage 1 Boom Cylinder P : P Port (From Pump) T : T Port (To Tank) A1 : A1 Port (From Boom Cylinder) :a B1 : B1 Port (To Boom Cylinder) P.B. :P.B.
PAGE 371
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • FRONT LOADER Down P.B.......- - - -........, r--------~~-__, P T B1 _:b :a 3TAAAAGLP019A (1) (2) (3) (4) Boom Control Section Bucket Control Section Spool P.B. Passage 1 (5) (6) (7) (8) Neutral Passage 1 Load Check Valve Passage 1 Boom Cylinder P : P Port (From Pump) B1 : B1 Port T : T Port (To Tank) (From Boom Cylinder) A1 : A1 Port (To Boom Cylinder) P.B. :P.B. Port (To 3 Hitch) a : Low Pressure b : High Pressure 1.
PAGE 372
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • FRONT LOADER Floating 3TAAAAGLP020A (1) (2) (3) (4) Boom Control Section Bucket Control Section Spool P.B. Passage 1 (5) Detent Mechanism (6) Neutral Passage 1 (7) Boom Cylinder P : P Port (From Pump) T: T Port (To tank) A1 : A1 Port B1 : B1 Port P.B. :P.B. Port (To 3 Hitch) a : Low Pressure 1.
PAGE 373
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • FRONT LOADER Roll-back P.t:S.;--------, (4) r;::========-, (5) _:b :a 3TAAAAGLP021A (1) (2) (3) (4) (5) Boom Control Section Bucket Control Section P.B. Passage 1 Spool Neutral Passage 2 (6) (7) (8) (9) P.B. Passage 2 Load Check Valve Passage 2 Bucket Cylinder P : P Port (From Pump) T : T Port (To Tank) P.B. :P.B. Port (To 3 Hitch) A2: A2 Port (From Bucket Cylinder) B2: B2 Port (To Bucket Cylinder) a : Low Pressure b : High Pressure 1.
PAGE 374
B><25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • FRONT LOADER Dump 1 (1 P T T _:b (4) 3TAAAAGLP022A (1) (2) (3) (4) (5) Boom Control Section Bucket Control Section P.B. Passage 1 Spool Neutral Passage 2 (6) (7) (8) (9) P.B. Passage 2 Load Check Valve Passage 2 Bucket Cylinder P : P Port (From Pump) T: T Port (To Tank) P.B. :P.B. Port (To 3 Hitch) A2 :A2 Port (To Bucket Cylinder) B2: B2 Port (From Bucket Cylinder) b : High Pressure 1.
PAGE 375
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • FRONT LOADER Dump 2 (1 ) P T _:b ~:a 3TAAAAGLP023A (1) (2) (3) (4) (5) Boom Control Section Bucket Control Section P.B. Passage 1 Spool Neutral Passage 2 (6) (7) (8) (9) P.B. Passage 2 Load Check Valve Passage 2 Bucket Cylinder P: P Port (From Pump) T: T Port (To Tank) P.B. :P.B. Port (To 3 Hitch) A2 :A2 Port (To Bucket Cylinder) B2: B2 Port (From Bucket Cylinder) a : Low Pressure b : High Pressure 1.
PAGE 376
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM FRONT LOADER 3. BOOM CYLINDER AND BUCKET CYLINDER o (1 ) (2) (3) (4) (5) 3UFAAACLP017 A (1) Nut (2) Piston (3) Cylinder Tube (4) Head (5) Piston Rod Both boom cylinder and bucket cylinder consists of a head (4), cylinder tube (3), piston rod (5), piston (2), and other parts as shown in the figure above.
PAGE 377
SERVICING CONTENTS 1. GENERAL .......................................................................................................8-S1 [1] IDENTIFiCATION ......................................................................................8-S1 [2] GENERAL PRECAUTION ....................................................................... 8-S1 [3] LUBRICANTS ........................................................................................... 8-S2 [4] MAINTENANCE CHECK LlST ........................
PAGE 378
PAGE 379
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM FRONT LOADER 1. GENERAL [1] IDENTIFICATION When contacting your local KUBOTA distributor, always specify front loader model and serial number. (1) Modell Serial Number W1010468 3TMAAGLP024A [2] GENERAL PRECAUTION 3UFAAABLP008A • During disassembly, carefully arrange removed parts in a clean area to prevent later confusion. Screws, bolts and nuts should be replaced in their original positions to prevent reassembly errors.
PAGE 380
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM FRONT LOADER [3] LUBRICANTS To prevent serious damage to hydraulic system. use only specified fluid or its equivalent. Place Capacities 11.6 L 3.1 U.S.gals 2.6 Imp.gals Transmission Case Grease fitting Until grease overflows Lubricants KUBOTA SUPER UDT Fluid" Moly Ep Type grease • NOTE • * KUBOTA SUPER UOT Fluid ..................
PAGE 381
BX25. RCK54(P)-23BX. RCK60B-23BX, LA240, BT601, WSM FRONT LOADER (2) Check Points of Every 10 Hours Greasing 1. Inject grease in all grease fitting with a hand grease gun. W1011132 3TAAAAGLP025A Lubricating 1. Lubricate joints of control lever linkage.
PAGE 382
BX25. RCK54(P)-23BX, RCK60B-23BX, LA240, BT601. WSM FRONT LOADER 2.
PAGE 383
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, 8T601, WSM FRONT LOADER 3. SERVICING SPECIFICATIONS Item Piston Rod I Factory Specification Allowable Limit 0.25 mm 0.0098 in.
PAGE 384
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM FRONT LOADER 4. TIGHTENING TORQUES [1] GENERAL USE SCREWS, BOLTS AND NUTS (FOR FRONT LOADER AND BACKHOE) Screws, bolts, and nuts whose tightening torques are not specified in this Workshop Manual should be tightened according to the table below. Indication on top of bolt 0 Material of opponent part ~t M6 (6 mm. 0.24 in.) M8 (8 mm. 0.31 in.) I M12 (12 mm. 0.47 in.) M14 (14 mm. 0.55 in.) M16 (16 mm. 0.63 in.) M18 (18 mm. 0.71 in.) M20 (20 mm. 0.79 in.
PAGE 385
BX25. RCK54(P)-23BX, RCK60B-23BX. LA240, BT601, WSM FRONT LOADER [3] AMERICAN STANDARD SCREWS, BOLTS AND NUTS WITH UNC OR UNF THREADS Grade ~ Nominal Diameter SAEGR.5 SAEGR.8 G @ N'm kgf·m IbHt N'm kgf·m IbHt 1/4 11.7t015.7 1.19 to 1.61 8.61 to 11.6 16.3 to 19.7 1.66 to 2.01 12.0 to 14.6 5/16 23.1 to 27.7 2.35 to 2.83 17.0 to 20.5 33 to 39 3.4 to 4.0 24 to 29 3/8 48 to 56 4.9 to 5.8 35.0 to 42.0 61 to 73 6.3 to 7.
PAGE 386
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM FRONT LOADER [5] HYDRAULIC FITTINGS • Adaptors, Elbows and Others Item Adjustable elbow, Adaptor (O-ring port) (UNF) Shape ~~ a a [A1 Nut Type [B1 No Nut Type a: O-ring Hose fitting, Flare nut (UNF) Adaptor (NPT) Tightening torque Thread size ~ alE ~ I N'm kgf'm IbHt 9/16 37 to 44 3.8 t04.5 27 to 33 3/4 48 to 54 4.9 to 5.5 35to 40 7/8 77 to 85 7.9 to 8.6 57 to 62 9/16 22 to 25 2.3 to 2.6 16 to 19 3/4 36 to 40 3.6 to 4.
PAGE 387
BX25, RCK54(P)-23BX, RCK60B·23BX, LA240, BT601, WSM 5. DISMOUNTING AND FROM TRACTOR FRONT LOADER MOUNTING FRONT LOADER • IMPORTANT • When dismounting the front loader, park the tractor on flat and hard ground, apply the parking brake. • When starting the engine or using the hydraulic control valve, always sit on the operator's seat. [1] DISMOUNTING FRONT LOADER FROM TRACTOR (3) Side Frame 1. Raise the boom until the stands (1) can be rotated. 2. Stop the engine. 3.
PAGE 388
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM FRONT LOADER [2] MOUNTING FRONT LOADER TO TRACTOR Side Frame and Hoses 1. Slowly drive the tractor between the loader side frames until the rear portion of both side frames touches the main frames as shown. 2. Stop the engine. 3. Connect four hoses with couplers to the nipple on the control valve as indicated with color marks. Then connect the protective caps and plugs to each other. 4. Start the engine and run at idle. 5.
PAGE 389
FRONT LOADER BX25. RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM 6. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Relief Valve Setting Pressure • NOTE • The relief valve is not installed on this model. However the relief valve of the tractor hydraulic system is used as the relief valve of the front loader. Refer to hydraulic section. (Reference) Relief valve setting pressure Factory spec. 12.3 to 12.7 MPa 125 to 130 kgf/cm 2 1778 to 1849 psi Condition • Engine speed .......
PAGE 390
FRONT LOADER BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM Control Valve 1. Remove the loader frame (6). 2. Disconnect the cruise control rod (2). 3. Disconnect the frame loader control rods (3). 4. Remove the brake spring. 5. Remove the arms (4) from spool end. 6. Remove the stay bolt (5). 7. Remove the valve stay (7). 8. Disconnect the pipes (1). 9. Remove the control valve (8) with pipes. (When reassembling) • After reassembling a valve, check for oil leakage by starting up an engine .
PAGE 391
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601.
PAGE 392
FRONT LOADER BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM (2) Bucket, Boom and Hydraulic Cylinders Bucket and Bucket Cylinder 1. Remove the pins (4), the lower pin (1) and remove the bucket (3). 2. Disconnect the hydraulic hoses from the bucket cylinder (2). 3. Remove the upper pin (1) and remove the bucket cylinder (2). (When reassembling) • When installing the bucket cylinder (2), the hydraulic port should face inside and be careful of the direction of grease fittings.
PAGE 393
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM r ~ Piston Rod Assembly 1. Drain hydraulic oil from the cylinder, and secure the tube end of the cylinder in a vise. 2. Unscrew the cylinder head (1) with the adjustable gland nut wrench (4). 3. Pull out the piston rod assembly (2) from the cylinder tube (3). (When reassembling) • Visually inspect the cylinder tube for signs of scoring or damage. • Insert the piston rod assembly to the cylinder tube, not to damage the piston seal on the piston.
PAGE 394
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (1) (2) (3) (4) FRONT LOADER Installing a-ring and Piston Seal 1. Place the slide jig (2) on the piston (4). 2. Install the O-ring (3) to the piston using the slide jig. 3. Install the piston seal (1) over the O-ring using the slide jig. 4. Compress the piston seal to the correct size by installing the piston into the correcting jig (5) . • NOTE • Do not turn (roll) the piston seal as you install it.
PAGE 395
BX25, RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM FRONT LOADER [3] SERVICING Piston Rod Bend 1. Place piston rod on V blocks. 2. Set a dial indicator on the center of the rod. 3. Turn the piston rod and read the dial indicator. 4. If the measurement exceeds the allowable limit, replace it. Piston rod bend Allowable limit 0.25 mm 0.0098 in.
PAGE 396
PAGE 397
BX25. RCK54(P)-23BX. RCK60B-23BX, LA240. BT601, WSM SAFETY INSTRUCTIONS SAFETY DECALS The following safety decals are installed on the machine. If a decal becomes damaged, illegible or is not on the machine, replace it. The decal part number is listed in the parts list. (1) Part No. 75597-7528-1 (4) Part No. 75595-7517-2 (5) Part No. 75595-7524-2 AWARNING (2) Part No. 7K501-7529-1 (3) Part No. 75597-7517-2 CARE OF DANGER, WARNING AND CAUTION LABELS 1.
PAGE 398
BACKHOE TERMINONOGY BX25, RCK54(P)-23BX. RCK60B-23BX, LA240, BT601, WSM BACKHOE TERMINONOGY 3TAAAAGDP001 A (16)--_..;.
PAGE 399
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM SPECIFICATIONS SPECIFICATIONS • Operating Dimensions ~ L ~~~"\ /&: l ') _ A j~--l13 ' 1 M \---- / "'- .... 3TAAAAGDPOO3A - // R H / 17 U G ~// Model BT601 1719 mm (67.7 in.) B Stabilizer Spread Transport 1296 mm (51.0 in.) C Ground Clearance 240 mm (9.4 in.) E Overall Width 1128 mm (44.4 in.) F Maximum Digging Depth 1889 mm (74.4 in.) G Digging Depth 2 ft., Flat Bottom 1842 mm (72.5 in.) H Digging Depth 8 ft.
PAGE 400
BX25. RCK54(P)-23BX, RCKSOB-23BX, LA240, BTS01, WSM SPECIFICATIONS • Digging Force (Per SAE J49) 8T601 Model With bucket cylinder 8610 N (1936Ibs) With dipperstick cylinder 5209 N (1171 Ibs) W1027852 • Cycle Time (Seconds) Boom cylinder. extend 4.5 Boom cylinder, retract 3.7 Swing cylinder. from 90 0 to center 1.5 Dipperstick cylinder, extend 4.1 Dipperstick cylinder, retract 3.4 Bucket cylinder. extend 3.1 Bucket cylinder. retract 2.4 Stabilizer cylinder. max. height to ground 2.
PAGE 401
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM SPECIFICATIONS • Lift Capacity (Per SAE J31) 192 (423) FT 8~----~----~~~-r-----' 212 (467) 215 (474) 4~__--+-----~----~L---~ 209 (461) 2~----+-----~-----+~~~ 203 (448) 2~----+-----~--~~----~ 201 (443) 4~----+---~~~---+----~ 214 (472) 6~----~----~--~~~--~ 262 (578) FT [A] 3TAAAAGDP004A [A] Rated Lift Capacity (Over End) - kg (Ibs) Lift capacities shown are 87 % of maximum lift force, according to SAE definition.
PAGE 402
PAGE 403
MECHANISM CONTENTS 1. HYDRAULIC SYSTEM .................................................................................. 9-M 1 [1] HYDRAULIC CIRCUIT ............................................................................ 9-M1 [2] CONTROL VALVE .................................................................................. 9-M2 (1) Structure ............................................................................................ 9-M2 (2) Operation ...............................................
PAGE 404
PAGE 405
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM BACKHOE 1. HYDRAULIC SYSTEM [1] HYDRAULIC CIRCUIT P T (1 ) P.B. B1 :B1 Port B2 :B2 Port B3 :B3 Port B4:B4 Port B5 :B5 Port B6 :B6 Port P: Pump Port T: Tank Port P.B. :Power Beyond Port A: From Hydraulic Pump (Approx. 14 Umin., 3.7 U.S.gals/mln., 3.08 Imp.gals/min.
PAGE 406
BACKHOE BX25, RCK54(P}-23BX, RCK60B-23BX, LA240, BT601, WSM [2] CONTROL VALVE (1) Structure P.B. B1 A1 B2A2 B3A3 B4A4 B5A5 B6A6 3TAAAAGNP007A (1) (2) (3) (4) (5) (6) (7) Inlet Section Bucket Control Valve Dipperstick Control Valve Stabilizer RH Control Valve Stabilizer LH Control Valve Boom Control Valve Swing Control Valve (8) Outlet Section P: Pump Port T: Tank Port P.B.
PAGE 407
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM BACKHOE (2) Operation • Neutral P P.B. P P.B. T B1 A1 B2 A2 B3 (11 ) A3 (8) B4 A4 B5 A5 B6 A6 L-______~----------------~ 3TAAAAGNP008A (1) (2) (3) (4) (5) (6) (7) Inlet Section Bucket Control Valve Dipperstick Control Valve Stabilizer RH Control Valve Stabilizer LH Control Valve Boom Control Valve Swing Control Valve :a P.B. (8) Outlet Section (9) Load Check Valve (10) Spool (11) Neutral Passage P: Pump Port T: Tank Port P.8.
PAGE 408
BACKHOE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • Bucket (Roll-back) , (1 ) p T (2) (3) (4) (5) 3TAAAAGNP009A (1) (2) (3) (4) Bucket Cylinder Bucket Control Valve Bridge Passage Load Check Valve (5) Spool (6) Inlet Section (7) Outlet Section P: Pump Port T: Tank Port P.B. :Power Beyond Port A1 : A1 Port (From Bucket Cylinder) B1 : B1 Port (To Bucket Cylinder) a: Low Pressure b: High Pressure 1.
PAGE 409
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • BACKHOE Bucket (Dump) 3TAAAAGNP010A (1) (2) (3) (4) Bucket Cylinder Bucket Control Valve Bridge Passage Load Check Valve (5) Spool (6) Inlet Section (7) Outlet Section P: Pump Port T: Tank Port P.B. :Power Beyond Port A1 : A1 Port (To Bucket Cylinder) B1 : B1 Port (From Bucket Cylinder) a: Low Pressure b: High Pressure 1.
PAGE 410
BX25, RCK54(P)-23BX, RCK60B·23BX, LA240, BT601, WSM • BACKHOE Dipperstick (Crowd) p T (2) (3) (4) 3TAAAAGNP011 A (1) (2) (3) (4) Oipperstick Cylinder Oipperstick Control Valve Bridge Passage Load Check Valve (5) Spool (6) Inlet Section (7) Outlet Section P: Pump Port T: Tank Port P.B. :Power Beyond Port A2: A2 Port (From Dlpperstick Cylinder) B2: B2 Port (To Dlpperstlck Cylinder) a: Low Pressure b: High Pressure 1.
PAGE 411
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • BACKHOE Dipperstick (Extend) T P (2) (1 ) P.B. (3) (4) (6) 3TAAAAGNP012A (1) (2) (3) (4) Dipperstick Cylinder Dipperstick Control Valve Bridge Passage Load Check Valve (5) Spool (6) Inlet Section (7) Outlet Section P: Pump Port T: Tank Port P.B. :Power Beyond Port A2: A2 Port (To Dipperstlck Cylinder) B2: B2 Port (From Dipperstick Cylinder) a: Low Pressure b: High Pressure 1.
PAGE 412
BX25. RCK54(P)-23BX, RCK60B-23BX, LA240. BT601, WSM • BACKHOE Stabilizer RH (Shrink) p T (2) (3) (4) 3TAAAAGNP013A (1) (2) (3) (4) Stabilizer Cylinder RH Stabilizer RH Control Valve Bridge Passage Load Check Valve (5) Spool (6) Inlet Section (7) Outlet Section P: Pump Port T: Tank Port P.B. :Power Beyond Port A3 :A3 Port (From Stabilizer RH Cylinder) B3: B3 Port (To Stabilizer RH Cylinder) a: Low Pressure b: High Pressure 1.
PAGE 413
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • BACKHOE Stabilizer RH (Extend) (1 ) ¢ ' =. . ._..... P.B. (6) 3TAAAAGNP014A (1) (2) (3) (4) Stabilizer Cylinder RH Stabilizer RH Control Valve Bridge Passage Load Check Valve (5) Spool (6) Inlet Section (7) Outlet Section P: Pump Port T: Tank Port P.B. :Power Beyond Port A3: A3 Port (To Stabilizer RH Cylinder) B3: B3 Port (From Stabilizer RH Cylinder) a: Low Pressure b: High Pressure 1.
PAGE 414
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM BACKHOE • Stabilizer LH (Shrink) (2) (3) (4) P.B. 3TAAAAGNP015A (1) (2) (3) (4) Stabilizer Cylinder LH Stabilizer LH Control Valve Bridge Passage Load Check Valve (5) Spool (6) Inlet Section (7) Outlet Section P: Pump Port T: Tank Port P.B. :Power Beyond Port A4: A4 Port (From Stabilizer LH Cylinder) B4: B4 Port (To Stabilizer LH Cylinder) a: Low Pressure b: High Pressure 1.
PAGE 415
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM • BACKHOE Stabilizer LH (Extend) (2) (3) (4) (5) 3TAAAAGNP016A (1) (2) (3) (4) Stabilizer Cylinder LH Stabilizer LH Control Valve Bridge Passage Load Check Valve (5) Spool (6) Inlet Section (7) Outlet Section P: Pump Port T: Tank Port P.B. :Power Beyond Port A4 :A4 Port (To Stabilizer LH Cylinder) B4: B4 Port (From Stabilizer LH Cylinder) a: Low Pressure b: High Pressure 1.
PAGE 416
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • BACKHOE Boom (Up) T (2) (3) (4) (1 ) c:C> 3TAAAAGNP017A (1) (2) (3) (4) Boom Cylinder Boom Control Valve Bridge Passage Load Check Valve (5) Spool (6) Inlet Section (7) Outlet Section P: Pump Port T: Tank Port P.B. :Power Beyond Port A5: A5 Port (From Boom Cylinder) B5: B5 Port (To Boom Cylinder) a: Low Pressure b: High Pressure 1.
PAGE 417
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • BACKHOE Boom (Down) p T (6) 85 3TAAAAGNP018A (1) (2) (3) (4) Boom Cylinder Boom Control Valve Bridge Passage Load Check Valve (5) Spool (6) Inlet Section (7) Outlet Section P: Pump Port T: Tank Port P.B. :Power Beyond Port A5: A5 Port (To Boom Cylinder) B5: B5 Port (From Boom Cylinder) a: Low Pressure b: High Pressure 1.
PAGE 418
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, 6T601, WSM • BACKHOE Swing (Right) T 3TAAAAGNP019A (1) (2) (3) (4) Swing Cylinder Swing Control Valve Bridge Passage Load Check Valve P: Pump Port T: Tank Port P.B. :Power Beyond Port (5) Spool (6) Inlet Section (7) Outlet Section A6: A6 Port (From Swing Cylinder) B6: B6 Port (To Swing Cylinder) a: Low Pressure b: High Pressure 1.
PAGE 419
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM • BACKHOE Swing (Left) p 3TAAAAGNP020A (1) (2) (3) (4) Swing Cylinder Swing Control Valve Bridge Passage Load Check Valve (5) Spool (6) Inlet Section (7) OuUet Section P: Pump Port T: Tank Port P,B, :Power Beyond Port A6: A6 Port (To Swing Cylinder) B6: B6 Port (From Swing Cylinder) a: Low Pressure b: High Pressure 1, When the boom and swing lever is moved to the left to set to the "LEFT" position, the spool (5) of the swing control valve (2) mov
PAGE 420
BACKHOE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (3) Overload Relief Valve (2) 3TAAAAGNP021A (7) (4) (\ (6\ ~ ~~ (3) Overload relief valve in this control valve is a combination valve combining a relief operation and anti cavitation operation . • Relief Operation When the control valve is in the neutral position, both cylinder ports of control valve are blocked by the spool. If an external load is imposed on the cylinder, pressure builds in the circuit.
PAGE 421
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM A (5) (2) (3) (4) BACKHOE [When the actuator port pressure is higher than the setting] When the cylinder port HP has reached the set pressure of the piston spring (5), the pressure oil in the spring chamber A opens the pilot poppet (4) and flows through the drain passage into the tank passage. This lowers the pressure in the spring chamber A, and the pressure difference across the throttle a moves the relief valve poppet (1) to the right.
PAGE 422
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM BACKHOE [3] HYDRAULIC CYLINDER (1 ) (3) (2) (4) (5) (6) 3TAAAAGNP022A (1) Rod (2) Head (3) Cylinder Tube (4) Piston (5) Nut (6) Tube End Bucket, dipperstick, boom, swing, and stabilizer cylinder consists of cylinder head (2), piston rod (1), cylinder tube (3), piston (4) and other parts as shown in the figure above.
PAGE 423
SERVICING CONTENTS 1. GENERAL .......................................................................................................9-51 [1] BACKHOE IDENTIFICATION ..................................................................9-51 [2] GENERAL PRECAUTION .......................................................................9-51 [3] LUBRiCANTS ...........................................................................................9-52 [4] MAINTENANCE CHECK LlST ......................................
PAGE 424
PAGE 425
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM BACKHOE 1. GENERAL [1] BACKHOE IDENTIFICATION When contacting your local KUBOTA distributor, always specify backhoe serial number and hour meter reading. (1) Serial Number (2) Hour Meter W1010477 [2] GENERAL PRECAUTION 3UFAAABLP008A • During disassembly, carefully arrange removed parts in a clean area to prevent later confusion. Screws, bolts and nuts should be replaced in their original positions to prevent reassembly errors.
PAGE 426
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM BACKHOE [3] LUBRICANTS To prevent serious damage to hydraulic systems, use only specified fluid or its equivalent. Place Capacity Lubricants 11.6 L 3.1 U.S.gals 2.6 Imp.
PAGE 427
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM BACKHOE (2) Check Points of Every 10 Hours Greasing 1. Inject grease all grease nipples with a hand grease gun.
PAGE 428
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM BACKHOE 2.
PAGE 429
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM BACKHOE 3. SERVICING SPECIFICATIONS Item Boom Cylinder Rod Pin to Cylinder Bushing Clearance Factory Specification Allowable Limit 0.060 to 0.185 mm 0.002 to 0.007 in. 1.0mm 0.0394 in. Pin O.D. 29.970 to 30.000 mm 1.180 to 1.181 in. - Bushing 1.0. 30.060 to 30.155 mm 1.183to 1.187 in. - 0.140 to 0.180 mm 0.006 to 0.007 in. 1.0mm 0.0394 in. Boom Support, Oipperstick Fulcrum Pin to Bushing Clearance Pin O.D. 29.820 to 29.850 mm 1.
PAGE 430
BX25, RCK54(P)-23BX, RCK60B-23BX. LA240, BT601, WSM BACKHOE Item Swing Cylinder Rod Pin to Cylinder Bushing Clearance Factory Specification Allowable Limit 0.108 to 0.259 mm 0.004 to 0.010 in. 1.0mm 0.0394 in. - Pin 0.0. 24.816 to 25.000 mm 0.977 to 0.984 in. Bushing 1.0. 25.000 to 25.209 mm 0.984 to 0.992 in. Thrust Washer Thickness Piston Rod Bend 2.66 mm 0.1046 in. 1.8mm 0.0709 in. 0.25 mm 0.0098 in.
PAGE 431
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM BACKHOE 4. TIGHTENING TORQUES [1] GENERAL USE SCREWS, BOLTS AND NUTS (FOR FRONT LOADER AND BACKHOE) Screws, bolts, and nuts whose tightening torques are not specified in this Workshop Manual should be tightened according to the table below. Indication on top of bolt Material of opponent 0 ® Ordinariness ~t~m Diameter M6 . (6 mm, 0.24 In.) M8 (8 mm, 0.31 in.) M10 (10 mm, 0.39 in.) M12 (12 mm, 0.47 in.) M14 (14 mm, 0.55 in.) M16 (16 mm, 0.63 in.
PAGE 432
BACKHOE BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM [3] AMERICAN STANDARD SCREWS, BOLTS AND NUTS WITH UNC OR UNF THREADS Grade ~ Nominal Diameter SAE GR.5 SAEGR.8 G @ N'm kgf'm Ibf-ft N'm kgf·m IbUt 1/4 11.7 to 15.7 1.19to 1.61 8.61 to 11.6 16.3 to 19.7 1.66 to 2.01 12.0 to 14.6 5/16 23.1 to 27.7 2.35 to 2.83 17.0 to 20.5 33 to 39 3.4 to 4.0 24 to 29 3/8 48 to 56 4.9 to 5.8 35.0 to 42.0 61 to 73 6.3 to 7.
PAGE 433
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM BACKHOE [5] HYDRAULIC FITTINGS • Adaptors, Elbows and Others Item Adjustable elbow, Adaptor (O-ring port) (LlNF) Shape ~~ a a [A] Nut Type [8] No Nut Type a: O-ring Hose fitting, Flare nut (UNF) Adaptor (NPT) Tightening torque Thread size Jill:Q4 It ~ N'm kgf'm IbHt 9/16 37 to 44 3.8 to 4.5 27 to 33 3/4 48 to 54 4.9 to 5.5 35 to 40 7/8 77 to 85 7.9 to 8.6 57 to 62 9/16 22 to 25 2.3 to 2.6 16 to 19 3/4 36 to 40 3.6 to 4.
PAGE 434
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM BACKHOE 5. DISMOUNTING AND MOUNTING [1] DISMOUNTING THE BACKHOE A CAUTION • When starting the engine, always sit in the operator's seat. • When getting off the tractor, make sure that PTO lever is off and range gear shift lever is in neutral. Then set the parking brake. • Keep hands, feet and body from between tractor and backhoe. Never allow any part of body under the machine. • When leaving the operator's seat, fully lower the boom to the ground.
PAGE 435
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM BACKHOE Mounting Pin 1. Raise the rear wheels slightly with the boom and remove the mounting pins (1). 2. Put the mounting pins (1) in the holes on the step of the backhoe. 3. Slowly raise the boom to disengage the backhoe from the tractor. 4. Raise the backhoe by operating the stabilizers to the lowering direction until the mount bars (3) hit to the guide stopper (2) on the support hooks (4). 5.
PAGE 436
BX25, RCK54(P)-23BX, RCK60B-23BX, lA240, BT601, WSM BACKHOE Hydraulic Hoses 1. Slowly release all hydraulic pressure by moving the backhoe hydraulic control levers in all directions. 2. Disconnect the hydraulic hoses in the following manner. 3. Disconnect the inlet, outlet and power beyond hoses from the tractor. 4. Connect the tractor's outlet hose to coupler of power beyond pipe.
PAGE 437
BACKHOE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM Mounting Pin and Mounting Backhoe • IMPORTANT • Make sure both hoses are firmly connected before starting the engine. A WARNING • Do not move the joystick control lever to the swing position. 1. Start the engine. 2. Stand beside the rear wheel. Move the boom to fully raising position and raise the backhoe by operating the stabilizers until the mount bar on the backhoe main frame are slightly higher than the tractor main frame support hooks.
PAGE 438
BACKHOE BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM [3] DISASSEMBLING THE BACKHOE • IMPORTANT • When reassembling the pins, bushings and inner rings, apply slight coat of grease to them. • When tightening the hydraulic hoses, refer to "HYDRAULIC HOSES FITTING AND FLARE PIPES" (Page a·S7.) Bucket 1. Remove the bucket (3) from the dipper stick (4). (1) Pin (25 x 129 mm) (2) Pin (25 x 129 mm) (3) Bucket (4) Dipperstick (5) Locking Nut W1015866 3TAAAAGNP023A Dipperstick and Bucket Cylinder 1.
PAGE 439
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM BACKHOE Dipperstick Cylinder, Boom, Boom Cylinder and Hoses 1. Disconnect the hydraulic hoses and remove the dipperstick cylinder (4). 2. Remove the pins (1), (3) and remove the boom cylinder (2). 3. Remove the pin (6) and remove the boom (5). 4. Remove the hydraulic hoses from the control valve. (When reassembling) • Lock the locking nuts to setting bolts at position where the mounting bolt may still be rotated .
PAGE 440
BACKHOE BX25. RCK54(P)-23BX. RCK60B-23BX, lA240. BT601, WSM W1016286 Swing Frame 1. Disconnect the swing cylinder rods (5) from swing frame (4). 2. Remove the swing frame (4) from main frame (1). (When reassembling) • Lock the locking nuts to setting bolts at position where the setting bolt may still be rotated. • Reinstall the thrust washers (6) at their original positions.
PAGE 441
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM BACKHOE Lever Support and Valve 1. 2. 3. 4. 5. Remove the cover (1). Disconnect the control lever rods (3) of valve side. Remove the lever support (2) with control levers. Disconnect the hydraulic hoses. Remove the control valve (4). (When reassembling) • Connect the hydraulic hoses at their original portions and be sure to connect the hose angle as indicated table below. • Port Angle of Bent Tube T,P L 1.57 rad (L 90 0) A6. B6 R 1.
PAGE 442
BACKHOE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM 6. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Relief Valve Setting Pressure • NOTE • The relief valve of the tractor hydraulic system is used as a relief valve of the backhoe hydraulic system. (Reference) Relief valve pressure Factory spec. 12.3 to 12.
PAGE 443
BX25, RCK54{P)-23BX, RCKSOB-23BX, LA240, BTS01, WSM BACKHOE [2] DISASSEMBLING AND ASSEMBLING (1) Control Valve (19) (5)---r (6) Disassembling Control Valve 1. Remove the spring and load check valve. 2. Remove the seal plate and wiper ring from valve housing. 3. Remove the cap, seal plate and wiper ring, and draw out the spool from the valve housing. (When reassembling) • Clean all parts with a suitable solvent, and dry with a lint-free cloth or air.
PAGE 444
BACKHOE BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601, WSM (2) Boom, Dipperstick, Bucket, Swing and Stabilizer Cylinder Cylinder Rod Assembly 1. Drain hydraulic oil from the cylinder, and secure the tube end of the cylinder in a vise. 2. Unscrew the cylinder head (1) with the adjustable gland nut wrench (4). 3. Pull out the piston rod assembly (2) from the cylinder tube (3). (When reassembling) • Visually inspect the cylinder tube for signs of scoring or damage.
PAGE 445
BX25. RCK54(P)-23BX. RCK60B-23BX. LA240. BT601. WSM BACKHOE Cylinder Adaptor Angle • Connect the cylinder adaptor at their original positions and be sure to connect the adaptor angle as indicated table below. Cylinder ~ 3TVAAACNP061A Rod Side Bottom Side R40 ±1 (deg.) R40 ±1 (deg.) o ±l o ±1 Dipperstick O±l o ±1 Bucket O±l o ±l Stabilizer (LH) R20 ±1 I 0 ±l Stabilizer (RH) L20 ±l o±1 W1022523 (1 ) (2) (((@ (3) 0 3UFAAABLP048A Piston Seal and O-ring 1.
PAGE 446
BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (1) (3) (2) (4) BACKHOE Installing O-ring and Piston Seal 1. Place the slide jig (2) on the piston (4). 2. Install the O-ring (3) on the piston using the slide jig. 3. Install the piston seal (1) over the O-ring using the slide jig. 4. Compress the piston seal to the correct size by installing the piston into the correcting jig (5) . • NOTE • Do not turn (roll) the piston seal as you install it.
PAGE 447
BACKHOE BX25. RCK54(P)-23BX. RCK60B-23BX. LA240, BT601, WSM Clearance between Pin and Bushing 1. Measure the pins 0.0. with an outside micrometer. 2. Measure the bushings 1.0. with a cylinder gauge. 3. If the clearance exceeds the allowable limit, replace pin or bushing.
PAGE 448
BACKHOE BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM (2). (3). (4) rl Clearance between Pin and Bushing (continued) Clea""'" Faok"'1 " " Allowable limit (1 ) Boom cylinder rod pi and cylinder bushing 0.060 to 0.185 mm 0.002 to 0.007 in. 1.0mm 0.0394 in. {2} Dipperstick fulcrum pin and bushing 0.140 to 0.180 mm 0.006 to 0.007 in. 1.0mm 0.0394 in. (3) Dipperstick cylinder rod pin and cylinder bushing 0.060 to 0.185 mm 0.002 to 0.007 in. 1.0mm 0.0394 in.