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TO THE READER This Workshop Manual has been prepared to provide servicing personnel with information on the mechanism, service and maintenance of KUBOTA Tractors B1700, B2100 and B2400. It is divided into two parts, "Mechanism" and "Servicing" for each section. II Mechanism Information on the construction and function are included. This part should be understood before proceeding with troubleshooting, disassembling and servicing.
SAFETY INSTRUCTIONS 81700·82100'82400 WSM,11770 A SAFETY FIRST This symbol, the industry's "Safety Alert Symbol", is used throughout this manual and decals 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.
SAFETY INSTRUCTIONS B1700·B21 00·B2400 WSM, 11770 (7) If the engine must be running to do same work, make sure the area is well ventilated. Never run the engine in a closed area. The exhaust gas contains poisonous carbon monoxide. (8) Do not touch the rotating or hot parts while the engine is running. (9) Fuel is extremely flammable and explosive under certain conditions. Do not smoke or allow flames or sparks in your working area.
SAFETY INSTRUCTIONS B1700·B21 00·B2400 WSM, 11770 SAFETY DECALS til 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. TA040-4965-2 (2) Part No. TA040-4959-3 (4) Part No. TA040-4935-1 (3) Part No. 6C040-4741-1 No fire (5) Part No. 6C050-4724-1 [HST type] Bl77F001 3 (6) Part No. TA040-4958-1 Do not touch hot surface like muffler, etc.
SAFETY INSTRUCTIONS B1700·B2100·B2400 WSM,11770 (7) Part No. TA040-4932-2 (8) Part No. 32751-4958-1 Stay clear of engine fan and fanbelt. (9) Part No. 6C040-4742-1 ACAUTION (10) Pa rt No. 6C040-5559-1 DANGER EXPLOSIVE GASES ~~Y:{3~~:~~~d;:c:fr~~r~:tt:~~i:~::c~:~~~Yorl~:eXC~~~~~~'::I~~ or adjust post connections without proper instruction and training. KEEP VENT CAPS TIGHTAND LEVEL POISON CAUSES SEVERE BURNS Contains sulfuric acid. Avoid contact with skin, eyes or clothing.
SPECI FICATIONS B1700·B2100·B2400 WSM,11770 SPECIFICATIONS Model PTa power B1700 HSD B2100 HSD B2400 HSD 9.7 kW (13.0 HP)* 12.0 kW (16.0 HP)* 13.4kW(18.0HP}* D905-D10 D1005-D10 KUBOTA Maker Model Indirect Injection. Vertical, water-cooled, 4-cycle diesel Type 3 Number of cylinders 72 x 73.6 mm (2.83 x 2.90 in.) 76 x 73.6 mm (2.99 x 2.90 in.) 78 x 78.4 mm (3.07 x 3.09 in.) Total displacement 898 cm 3 (54.8 cu.in.) 1001 cm 3 (61.1 cu.in.} 1123 cm 3 (68.5 eu.in.) Engine gross power 12.
SPECI FICATIONS B1700·B2100·B2400 WSM,11770 81700 D Model 82100 D 10.7 kW(14.0 HP}* PTO power 12.7 kW(17.0 HP}* KUBOTA Maker D905-D10 Model D1005-D10 Indirect Injection. Vertical, water-cooled, 4-cycle diesel Type 3 Number of cylinders 72 x 73.6 mm (2.83 x 2.90 in.) 76 x 73.6 mm (2.99 x 2.90 in.) Total displacement 898 cm 3 (54.8 cu.in.) 1001 cm 3 (61.1 cu.in.} Engine gross power 12.7 kW (17.
SPECI FICATIONS 81700'82100·82400 WSM,11770 TRAVELING SPEEDS [HSTType] (At rated engine rpm) Model 81700 82100 82400 Tire size (Rear) 8.3-16 9.5-16 11.2-16 Forward Reverse Hi-Lo gear shift lever km/h mph km/h mph km/h mph Low oto 5.0 oto 5.3 oto 3.3 oto 5.6 oto 3.5 High Oto 12.3 Oto13.2 Oto8.2 Oto13.9 Oto 8.7 Low oto 5.0 oto 12.3 oto 3.1 oto 7.7 oto 3.1 Oto 5.3 oto 3.3 Oto 5.6 Oto 3.5 Oto 7.7 oto 13.2 Oto 8.2 Oto13.9 Oto8.
~ '-J '-J -n 0 0 81700 82100 82400 w s: OJ x 835(32.9) if 3 c 3 a. 3 ~~ i I I /I) ::::I ~. 0 ::::I '"'":r -c ~ m Z 0- V' Z OJ ~ '-J 0 0 ci:J ..... 0 '? OJ ..... ./:> 0 0 ~ S V> ~ ~ '-J '-J 0 0 CJCJCJ I'V I'V -> ./:>->'-1 000 000 I'VI'V-> ./:>->'-1 000 000 I'V I'V I'V WWI'V woo:> -> c.oc.ooo ->0<0 0 0 :E::::I 0 CJCJCJ OJ 10 OJ ::::I <+ '"-... 01 000 OJ .... 3 <+ .... Ol ~~~ <0 0 III < OJ ~. 00 I I I II i \ u......
CONTENTS [1] [2] [3] [4] [5] [6] [7] [8] FEATURES TRACTOR IDENTIFICATION GENERAL PRECAUTIONS HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING LUBRICANTS, FUEl AND COOLING WATER TIGHTENING TORQUES (GENERAL USE SCREWS, BOLTS AND NUTS) MAINTENANCE CHECK LIST CHECK AND MAINTENANCE (1) Daily Check (2) Check Points of Initial 50 Hours (3) Check Poi nts of Every 50 Hou rs (4) Check Poi nts of Every 100 Hou rs (5) Check Point of Every 200 Hours (6) Check Point of Every 300 Hours (7) Check Point of Every 400 Ho
G GENERAL 81700·82100·82400 WSM,11770 [1] FEATURES (1) Integral Power Steering (8) Main Shift Lever Located in the Right Side of Transmission (2) Standard Mid PTa (9) New Design (3) Simultaneous Mounting of Both the (10) Variation of Transmission Mid Mount Mower and Front Loader (Loader is fully-compatible with the mower) (Manual Transm issi on and Hyd rostati c Transmission) (4) E-TVCS Diesel Engine (11) Wet Disc Brake (5) Engine Key Shut-Off System (12) Position Control Valve (Engine key swit
G GENERAL 81700·82100'82400 WSM,11770 [2] TRACTOR IDENTIFICATION When contacting your local KUBOTA distributor, always specify engine serial number, tractor serial number and hourmeter reading.
G B1700'B21 00·B2400 WSM, 11770 GENER.!~L [3] GENERAL PRECAUTIONS SGOOF001 {Al (B) -- ® ® SGOOF002 • During disassembly, carefully arrange removed parts in a clean area to prevent confusion later. 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.
B1700·B2100·B2400 WSM,11770 G GENERAL [4] HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING Disconnect negative terminal first Ins tall on positive terminal first To ensure safety and prevent damage to the machine and surrounding equipment, heed the following precautions in handling electrical parts and wiring. III IMPORTANT • Check electrical wiring for damage and loosened connection every year.
G GENERAL B1700·B21 00·B2400 WSM, 11770 • Clamp wiring so that there is no twist, unnecessary sag, or excessive tension, except for movable part, where sag may be required. • Securely clamp, being careful not to damage wiring. CORRECT ~ INCORRECT~ C079F009 C079F008 C079F007 • In installing a part, take care not to get wiring caught by it. • After installing wIring, check protection of terminals and clamped condition of wiring, only then connect battery.
G GENERAL B1700·B21 00·B2400 WSM, 11770 • Fuse • Use fuses with specified capacity. • Never use steel or copper wire in place of fuse. • Do not install working light, radio set, etc. on machine which is not provided with reserve power supply. • Do not install accessories if fuse capacity of reserve power supply is exceeded. Use reserve power supply for working light It is dangerous to modify on remodel as you please C079F014 • Connector • For connector with lock, push lock to separate.
G GENERAL B1700·B21 00·B2400 WSM, 11770 • Handling of Circuit Testers • Use tester correctly following manual provided with tester. • Check for polarity and range. Check polarity and range. C079F027 C079F026 • Handling of Parts • Do not throw or drop electrical parts and wire harnesses. • Do not pour water on electrical parts such as main switch and alternator. C079F023 C079F025 • Oil, Dust and Dirt • If flammable material such as fuel, or lubricant spills, wipe it off with dry piece of cloth.
G GENERAL 81700'82100'82400 WSM,11770 [5] LUBRICANTS, FUEL AND COOLING WATER Capacity Place I B1700 I B2100 Lubricants, fuel and cooling water B2400 Fuel tank 258 6.6 U.S.gals. 5.5 Imp. gals. NO.2-D diesel fuel NO.1-D diesel fuel if temperature is below - 10 °C (14 OF) Cooling system 3.48 3.6 U.S.qts. 3.0Imp.qts. Fresh clean water with anti-freeze 3.08 3.2 U.s.qts. 2.6Imp.qts. Engine oil : API Service CC or CD Below 0 °C (32 OF) •..........•..
G GENERAL B1700·B21 00·B2400 WSM, 11770 [6]-(1) TIGHTENING TORQUES (GENERAL USE SCREWS, BOLTS AND NUTS) Indication on top of bolt o@ SS400,S20C Material of bolt Material of opponent part ~ Diameter M10 (10 mm, 0.39 in.) M12 (12 mm, 0.47 in.) M14 (14 mm, 0.55 in.) M16 (16mm, 0.63 in.) M18 (18 mm, 0.71 in.) M20 (20mm, 0.79 in.) [6]-(2) (j)7T No-grade or 4T Ordinariness N'm S43C,S48C Ordinariness Aluminum kgf·m ft-Ibs N·m kgf·m ft-Ibs N'm kgf·m ft-Ibs ~ Diameter M8 (8 mm, 0.31 in.
G GENERAL B1700'B21 00·B2400 WSM, 11770 [7] MAINTENANCE CH ECK LIST Indication on hour meter (Change or check every interval shown below) Check point No.
G GENERAL 81700'82100·82400 WSM, 11770 [7] MAINTENANCE CHECK LIST (Continued) Indication on hour meter (Change or check every interval shown below) Check point No. After purchase Reference page 1 2 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 year years CI utch ho~si ng water 28 draining 29 Fuse replacement * 30 Light bulb replacement Note: * * The jobs indicated by@ must be done by all means 50 hours after the break-in respectively. The jobs indicated by service as required.
G GENERAL B1700·B2100·B2400 WSM,11770 (2) Check Points of Initial 50 Hours Changing Engine Oil A CAUTION • Before changing oil, be sure to stop the engine. B177FG01 1. Start and warm up the engine for approx. 5 minutes. 2. Place an oil pan underneath the engine. 3. To drain the used oil, remove the drain plug (1) at bottom of the engine and drain the oil completely. 4. Screw in the drain plug. 5. Fill new oil up to upper notch on the dipstick.
G GENERAL B1700·B2100·B2400 WSM,11770 Changing Transmission Oil A CAUTION .. Be sure to stop the engine checking and changing the transmission oil. 1. Place an oil pan underneath the transmission case. 2. Remove the drain plugs (1) at the bottom of the transmission case. 3. Drain the transmission oil. 4. After draining, screw in the four drain plugs. S. Fill new oil from filling port after removing the filling plug (2) up to the upper notch on the dipstick. 6.
G GENERAL [HSTtype] B1700·821 00'82400 WSM, 11770 Replacing Transmission Oil Filter Cartridge A CAUTION • Be sure to stop the engine before changing the oil filters. B177FG04 [Manual transmission type] 1. Remove the oil filter cartridge by using a filter wrench. 2. Applya slight coat of oil onto the cartridge gasket. 3. To install the new cartridge, screw it in by hand. Over tightening may cause deformation of rubber gasket. 4.
G GENERAL B1700·B2100·B2400 WSM,11770 [Manual transmission type] III 1. 2. 3. Test 1 : for safety switch on the clutch linkage Release the clutch pedal. Turn the key to "START" position. The engine must not crank. III Test 2 : for safety switch on the traveling gear shift linkage 1. Fully depress the clutch pedal. 2. Shift the main gear shift lever [Manual transmission type] or Hi-Lo gear shift lever [HSTtype] to 'Desired" position. 3. Turn the key to "START" position. 4. The engine must not crank.
G GENERAL B1700·B2100·B2400 WSM,11770 Checking Wheel Mounting Screws and Nuts Tightening Torque A CAUTION To avoid personal injury: • Never operate tractor with a loose rim, wheel, or axle. • Any time bolts and nuts are loosened, retighten to specified torque. • Check all bolts and nuts frequently and keep them tight. 1. Check wheel bolts and nuts regularly especially when new. If there are loosened, tighten as follows.
G GENERAL B1700·B21 00·B2400 WSM, 11770 Battery Charging A CAUTION (1) Highest Level (2) Lowest Level Table 1 [with AC dynamo] Tractor model Volts (V) Battery type Capacity at 5H.R(A.H} B1700 B2100 B2400 50B24L(S)·MF 12 36 Tractor model Reserve Capacity (min) Cold Cranking Amps Normal Char ing Rate A) B1700 B2100 B2400 71 390 4.5 1 Table 2 [with alternator] Tractor model Battery type Volts (V) Capacity at 5H.R(A.
G GENERAL B1700·B2100·B2400 WSM,11770 (4) Check Points of Every 100 Hours Changing Engine Oil Refer to page G-12. Cleaning Air Cleaner Element Compressed air tleaning method C047F050 (1) Element (2) Wing Bolt (3) Evacuator Valve 1. Remove the element. 2. Clean the element: 1) When dry dust adheres to the element, blow compressed air from the inside turning the element. Pressure of compressed air must be under 686 kPa (7 kgf/cm 2, 99 psi).
G GENERAL B1700·B21 00·B2400 WSM, 11770 Checking Fan Belt Tension A CAUTION To avoid personal injury: • Be sure to stop engine before checking belt tension. B130F073 (1) Adjusting Screw (2) Tension Bolt 1. Stop the engine and remove the key. 2. Apply moderate thumb pressure to belt between pulleys. 3.
G GENERAL B1700·B2100·B2400 WSM,11770 Checking Brake Pedal Free Travel A CAUTION To avoid personal injury: • Stop the engine and chock the wheels before checking brake pedal. 1. Release the parking brake. 2. Slightly depress the brake pedals and measure free travel at top of pedal stroke. 3. If the measurement is not within the factory specifications, loosen the lock nut and turn the turn buckle to adjust the brake rod length. 4. Retighten the lock nut securely.
G GENERAL B1700·B21 00·B2400 WSM, 11770 Checking Fuel Line A CAUTION • Stop the engine when attempting the check and change prescribed below. • Remember to check the fuel line periodically. The fuel line is subject to wear and aging, fuel may leak out onto the running engine, causing a fire. 1. Check to see that all line and hose clamps are tight and not damaged. 2. If hoses and clamps are found worn or damaged, replace or repairthem at once. 3.
G GENERAL B1700·B2100·B2400 WSM,11770 (6) Check Point of Every 300 Hours Changing Transmission Fluid See page G-11. Cleaning Transmission Strainer See page G-12. Replacing Transmission Oil Filter Cartridge only for HST See page G-12. Changing Front Axle Case Oil 1. Place the oil pans underneath the front axle case. 2. Remove the both right and left hand side drain plugs (3) and filling plug (2) to drain the oil. 3. Remove the right and left breather plugs. 4. After draining, reinstall the drain plugs (3).
G GENERAL 81700'82100'82400 WSM,11770 (9) Check Point of Every 1 Year Replacing Air Cleaner Element 1. Replace the air cleaner element (1). • NOTE • Every year or every 6 times of cleaning, replace the air cleaner element (1). • • • • (1) Element (2) Wing 80lt (3) Evacuator Valve IMPORTANT The air cleaner uses a dry element, never apply oil. Do not run the engine with filter element removed. Make sure the wing nut or bolt with rubber dust seal for the element is tight enough.
G GENERAL 81700·82100'82400 WSM,11770 Flush Cooling System and Changing Coolant (Continued) • Anti·Freeze If it freezes, cooling water can damage the cylinders and radiator. It is necessary, if the ambient temperature falls below o °C (32 OF), to remove cooling water after operating or to add anti-freeze to it. 1. There are two types of anti-freeze available; use the permanent type (PT) for this engi ne. 2.
G GENERAL B1700·B21 00·B2400 WSM, 11770 (11) Others Bleeding Fuel System 1. Fill the fuel tank with fuel and open the fuel cock. 2. Start the engine and run for about 30 seconds, and then stop the engine. (1) Fuel Cock (A) CLOSE (B) OPEN 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.
G GENERAL 81700·82100·82400 WSM, 11770 [9] 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. ST10F003 Piston Ring Compressor Code No.: 07909-32111 Application: Use exclusively for pushing in the piston with ease. ST10FOO~ Piston Ring Tool Code No.: 07909-32121 Application: Use exclusively for removing or installing the piston ring with ease.
G GENERAL B1700'B21 00·B2400 WSM, 11770 Oil Pressure Tester I~-~_ - __ 1 o @ Code No.: 07909-32032 Application: Use to measure lubricating, for all kinds of diesel engines. ST10F037 Valve Seat Cutter Code No.: 07909-33102 Application: Use to reseat valves. Angle: 0.785 rad. (45°) = Diameter: ST10F009 0.262 rad. (15°) 28.6 mm ( 1.126 in) 31.6 mm ( 1.244 in) 35.0 mm ( 1.378 in) 38.0 mm ( 1.496 in) 41.3 mm (1.626 in) 50.8 mm (2.000 in) Radiator Tester Code No.
G GENERAL B1700·B2100·B2400 WSM,11770 Press Gauge 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.) range: Red 0.051 to 0.152 mm (0.002 to 0.006 in.) Blue 0.102 to 0.229 mm (0.004 to 0.009 in.) Red Check ( Crack check liquid) Code No.: 07909-31371 Application: Use to check cracks on cylinder head, cylinder block, etc.
G GENERAL 81700·82100'82400 WSM,11770 Unit: mm (in.) Valve Guide Replacing Tool Application: Use to press out and to press fit the valve guide. 200(7.87) 9 (0.354) ""--_."'- 0087F037 Unit: mm (in.) Idle Gear Bushing Replacing Tool Application: Use to press out and to press fit the idle gear bushing. 0 '"'""- ~ I~ 0 ~ - .-._.- -'-'-~l rx, 26 ~ - . - . _ . - I- 150(5.9) M 196(772) 0087F038 Unit: mm (in.
G GENERAL 81700·82100·82400 WSM,11770 '" 00 B ~ ~ m N o e- Governor Gear Holder Bushing Replacing Tool Application: 0 m N 00 0 Unit: mm (in.) ~ ~ N N ~~ ... Use to press out and press fit the governot gear holder bushing. ,; em 0 ~ ~ B m - .- ~. f-.- C - . _ '"0 0 0087F096 lf1' ~C'I ~I ~ . _ . - . If- M' 150(59) 188(74) Unit: mm (in.) Application: "'f---i"'l 20(079) I .~, ~ Flywheel Stopper :r Use to loosen and tighten the flywheel screw.
G GENERAL B1700·B2100·B2400 WSM,11770 Relief Valve Set Pressure Tester I Code No.: 07916-50045 Application: This allows easy measurement of relief set pressure for all tractor models. (1) (2) (3) (4) (5) ST20F018 Gauge (07916-50321) Cable (07916-50331) Threaded Joint (07916-50401) Threaded Joint (07916-50341) Adaptor B (M18X P1.
G GENERAL 81700·82100'82400 WSM,11770 Flowmeter Flowmeter Code No. : 07916-52791 Hydraulic Test Hose Code No. : 07916-52651 (1 pc.) Application: This allows easy testing of hydraulic system. ST20F037 JllVl1 Ilfll?) Adaptor Set Code No.: 07916-54031 Application: Use for checking hydraulic pumps.
G GENERAL 61700·62100·62400 WSM, 11770 [10] TIRES (1) Type of Tire • IMPORTANT • Do not use tires larger than specified . • When you intend to mount different size of tires from equipped ones, consult your dealer about front drive gear ratio for detail. Excessive wear oftires may occur due to improper gear ratio. The following tires can be mounted on Models B1700, B2100 and B2400. Type of Tire Farm Tire Type of tractor Rear Tire Front Tire [B 1700] 8.
G GENERAL 81700,82100·82400 WSM, 11770 (2) Tread Adjustment (2)-1 Front Wheel _IMPORTANT • Do not turn front discs to obtain wider tread. Front tread cannot be adjusted. Models 81700 82100 82400 Tires 6-12 Farm 7-12 Farm 81700 82100 82400 835mm 32.9 in. 81700 82100 82400 21 x8.00-10 Turl 23x8.50-12 Turl 12-16.5 Industrial 940mm 37.0 in. 870mm 34.3 in. 870mm 34.3 in. Tread 835mm (32.9in) 0354F096 0354F096 _-1----- 940mm (37.0inl 835mm (32.9in) 870mm (34.
G GENERAL B1700·B21 00·B2400 WSM, 11770 Models B1700 B2100 B2400 B1700 B2100 B2400 B1700 B2100 B2400 Tires 8.3-16 Farm 9.5-16 Farm 11.2-16 Farm 33x12.5-15 Turf 948 mm to 778 mm (37.3 in. to 30.6 in.) 1006 mm to 836 mm (39.6 in. to 32.9 in.) 1064 mm to 890 mm (41.9 in. to 35.0 in.) 886mm (34.9 in.) 778mm (30.6in) 948mm (37.3in) 1006mm (39.6in) 836mm (32.9in) 1064mm (41.9in) 886mm (34.9in) 890mm (35.
G GENERAL B1700·B21 00·B2400 WSM, 11770 (3) Wheel Hub Front Wheel Hub RearWheel Hub 4WD 4WD 120mm 4.72 in. 152 mm 6.0 in. 6 6 M12 x Pitch 1.25 M14xPitch 1.5 69.5 mm 2.74 in. 114mm 4.49 in. Type Screw circle diameter (A) Number of screws Screw sizes Pilot bore diameter (B) Equal 1.05 rad (60 deg.) Hole spacing (C) Equal 1.05 rad (60 deg.) 0319F072 (4) Tire Pressure A B Though the tire pressure is factory-set to the prescribed level, it naturally drops slowly in the course of time.
G GENERAL B1700·B2100·B2400 WSM,11770 (5) Tire Liquid Injection _IMPORTANT .. Do not fill the front tire with liquid. Auxiliary weights can be used to increase traction force for plowing in fields or clayey grounds. Another way is to inject water or another liquid, such as a calcium chloride solution, in the tires. Water must not be used in winter since it freezes at DOC Freezing temp. (32°F).
G GENERAL B1700·B2100·B2400 WSM.11770 Injection Fig.1 A CAUTION • When a calcium chloride solution is used, cool it before pouring it into the tire. The following four ways can be used to inject water or a calcium chloride solution into tires. 1. Gravity injection (Fig. 1) 2. Pump injection (Fig. 2) 3. Pressure tank injection (Fig. 3) 4. Injection directly from tap (only when water is being used). C045F098 Fig.
G GENERAL B1700·B21 00·B2400 WSM, 11770 • Weight of Calcium Chloride Solution Filling 75 % of Full Capacity of a Tire. Tire sizes 8.3-16 9.5 -16 11.2-16 12-16.5 Slush free at -10°C (13 OF) Solid at -30 °C (-23 OF) [Approx. 1 k2 (2 Ibs.) caCI2rr4 (1gal)of water 35 kg (77lbs) 54kg (119Ibs) 70 kg (155Ibs) 74kg (163 Ibs) Slush free at -24°C (-12°F) Solid at -47°C (-52°F) [Approx. 1.5 kg (3.5Ibs.
G GENERAL 81700·82100'82400 WSM,11770 [11] SPECIFICATIONS OF 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.
G GENERAL B1700·B2100·B2400 WSM,11770 Remarks Implement 81700 82100 82400 Mid Mount Max. Cutting Width Max. Weight cm (in.) kg (Ibs) 152 (60) 140 (300) 152 (60) 140 (300) 152 (60) 140 (300) Rotary-cutter (1 Blade) Max. Cutting Width Max. Weight cm (in.) kg (Ibs) 107 (42) 140 (300) 107 (42) 140 (300) 122 (48) 180 (400) Rear-mount (2 or 3 Blade) Max. Cutting Width Max. Weight cm (in.) kg (Ibs) 152 (60) 140 (300) 152 (60) 140 (300) 183 (72) 227 (500) Flail-mower Max.
MI:CHANISM CONTENTS [1] FEATURES [2] ENGI NE BODY (1) Cylinder Block (2) Cylinder Head (3) Crankshaft (4) Piston and Piston Rings (5) Connecting Rod (6) Camshaft and Fuel Camshaft (7) Rocker Arm (8) Inletand ExhaustValves (9) Valve Timing (10) Flywheel (11) Air Cleaner (12) Muffler [3] LUBRICATING SYSTEM (1) (2) (3) (4) (5) General Oil Pump Relief Valve Oil Filter Cartridge Oil Pressure Switch [4] COOLING SYSTEM (1) (2) (3) (4) Water Pump Thermostat Radiator Radiator Cap [5] FUEL SYSTEM (1) (2) (3)
1 ENGINE B1700·B21 00·B2400 WSM, 11770 [1] FEATURES B130F002 The 0905-010, D1 005-010 and 01105-010 are vertical, water-cooled, 4-cycle diesel engines. It is incorporated KUBOTA's foremost technologies. With KUBOTA's E-TVCS (Three Vortex Combustion System), well-known Bosch MO type injection pump and the well-balanced designs, they give greater power, low fuel consumption, little vibration and quiet operation.
1 ENGINE 81700·82100'82400 WSM,11770 (2) Cylinder Head The cross-flow type intake/exhaust ports in this engine have their openings at both sides of the cylinder head. Because overlaps of intake/exhaust ports are smaller than in ports of other types which have openings on one side, the suction air can be protected from bei ng heated and expanded by heated exhaust air. The cool, high density suction air has high volume efficiency and raises the power of the engine.
- - - ----------- 1 ENGINE B1700·B21 00·B2400 WSM, 11770 (4) Piston and Piston Rings The piston has a slightly oval shape when cold (in consideration of thermal expansion) and a concave head. Three rings are installed in grooves in the piston. The top ring (1) is a keystone type, which can stand against heavy loads, and the barrel face on the ring fits well to the cylinder wall. The second ring (2) is an undercut type, which effectively prevents the oil from being carried up.
1 ENGINE B1700·B2100·B2400 WSM,11770 (6) Camshaft and Fuel Camshaft The camshaft (3) is made of special cast iron and the journal and cam sections are chilled to resist wear. The journal sections are force-lubricated. The fuel camshaft (5) controls the reciprocating movement of the injection pump. The fuel camshaft is made of carbon steel and the cam sections are quenched and tempered to provide greater wear resistance.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 (8) Inlet and Exhaust Valves The inlet and exhaust valves (7), (6) and their guides (6) are different from each other. Other parts, such as valve springs (4), valve spring retainers (3), valve spring collets (2), valve stem seals (5), and valve caps (1) are the same for both the inlet and exhaust valves. All contact or sliding parts are quenched and tempered to resist wear.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 (10) Flywheel The flywheel is connected with the crankshaft, it stores the rotating force in the combustion stroke as inertial energy to rotate the crankshaft smoothly. The flywheel periphery is provided with marks showing fuel injection timing and top dead center. The flywheel and crankshaft can be fixed to each other at a certain point according to the arrangement of flywheel mounting screw hole.
1 ENGINE 81700·82100·82400 WSM,11770 (12) Muffler The muffler consists of an inner tube (1) with a series of holes and outer tube (2). The exhaust noises are absorbed and dumped, while the gas pass through a series of holes on the innertube (1). (1) InnerTube (2) Outer Tube (3) Exhaust Tube 8177F103 [3] LUBRICATING SYSTEM (1) General The lubricating system within this engine consists of an oil strainer, oil pump, relief valve, oil filter cartridge and oil switch.
1 ENGINE 81700·82100·82400 WSM,11770 (2) Oil Pump (A) (8) (e) (D) 6000 0087F019 (1) (2) (3) (4) Inlet Outlet Inner Rotor Outer Rotor 2 The oil pump in this engine is a trochoid pump. Inside the pump body, the 10 lobe inner rotor (3) is eccentrically engaged with the 11 lobe outer rotor (4). The inner rotor is driven by the crankshaft, which in turn rotate the outer rotor. When the inner rotor rotates, the outer rotor also rotates in the same direction.
1 ENGINE B1700·B2100·B2400 WSM,11770 (4) Oil Filter Cartridge Impurities in engine oil can cause to wear and seize components as well as impairing the physical and chemical properties of the oil itself. Impurities contained in force-fed engine oil are absorbed on the filter paper for removal as they pass through the filter element (2). When the filter element is clogged and the oil pressure in inlet line builds up by 98 kPa (1.
1 ENGINE B1700·B2100·B2400 WSM,11770 [4] COOLING SYSTEM (1) (2) (3) (4) (5) (6) Radiator Suction Fan Thermostat Water Pump Cylinder Head Cylinder Block 6 B083F248 The cooling system consists of a radiator (1), centrifugal water pump (4), suction fan (2) and thermostat (3). The water is cooled through the radiator core, and the fan set behind the radiator pulls cooling air through the core to improve cooling.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 (2) Thermostat 9 C042F048 (1) (2) (3) (4) (5) Seat Valve Pellet Spindle Synthetic Rubber C042F049 (6) Wax (solid) (7) Spring (8) Leak Hole (9) Wax (liquid) The thermostat maintains the cooling water at correct temperature. KUBOTA's engine uses a wax pellet type thermostat. Wax is enclosed in the pellet. The wax is solid at low temperatures, but turns liquid at high temperatures, expands and opens the valve. (A) At low temperatures (lower than 82°C (180°F».
1 ENGINE B1700·B2100·B2400 WSM,11770 [5] FUEL SYSTEM (1) Fuel Line (1) (2) (3) (4) (S) (6) (7) 6 ...-. --- 3 / ,I Fuel Tank Fuel Filter Injection Pump Injection Pipe Injection Nozzle Fuel overflow Pipe Fuel Feed Pump 2 }----+-f.1 0343F110 Fuel from the fuel tank (1) passes through the fuel filter (2), and then enters the injection pump (3) after impurities such as dirt, water, etc. are removed. The fuel pressurized by the injection pump to the opening pressure (13.73 to 14.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 (3) Fuel Feed Pump (A) Filtered fuel is fed to the injection pump by the fuel lift pump. The fuel lift pump operates as shown in the figure. Power is applied to the tappet by an eccentric movement on the fuel camshaft. As the fuel camshaft rotates, the eccentric movement causes the tappet to move up and down. The tappet is linked to a flexible diaphragm (4) via the pull rod.
1 ENGINE B1700·B2100·B2400 WSM,11770 (4) Injection Pump A Bosch MD type mini pump is used for the injection pump. It is small, lightweight and easy to handle. The plunger (4) with a left-hand lead recipro-cates via the tappet roller (3) by means of the camshaft fuel cam, causing the fuel to be delivered into the injection nozzle. (1) (2) (3) (4) Cylinder Control Rack Tappet Roller Plunger (5) Delivery Valve (6) Delivery Valve Holder (7) Dumping Valve 0087F024 1.
1 ENGINE B1700·B21 00·B2400 W$M, 11770 III Pump Element The pump element (1) is consist of the plunger (3) and cylinder (2). The sliding surfaces are super-precision machined to maintain injection pressure at engine low speeds. Since the driving face (7) fits in the control sleeve, the plunger (3) is rotated by the movement of the control rack to increase or decrease of fuel delivery. As described above, the plunger (3) is machined to have the slot (5) and the control groove (6).
1 ENGINE B1700·B21 00·B2400 WSM, 11770 (5) Injection Nozzle This nozzle is of flat-cut-provided double throttle type.
- - - - - - _.. _-_ .. _.. _ _----- 1 ENGINE B1700·B21 00·B2400 WSM, 11770 • At start As no centrifugal force is applied to flyweight (7), low tension of start spring (1) permits control rack to move to the starting position, supplying the amount of fuel required to start the engine.
SGRVICING CONTENTS TROUBLESHOOTING SERVICING SPECIFICATIONS TIGHTENING TORQUES CHECKING, DISASSEMBLING AND SERVICING [1] SEPARATING THE ENGINE [2] ENGINE BODY CHECKING AND ADJUSTING DISASSEMBLING AND ASSEMBLING (1) Cylinder Head and Valve (2) Timing Gears and Camshaft (3) Connecting Rod and Piston (4) Crankshaft SERVICING (1) Cylinder Head and Valves (2) Timing Gears and Camshaft (3) Piston and Connecti ng Rod (4) Crankshaft (5) Cylinder [3] LUBRICATING SYSTEM CHECKING SERVICING (1) Oil Pump [4] COOLING SY
1 ENGINE 81700'82100·82400 WSM,11770 TROUBLESHOOTING Probable Cause Symptom Engine Does Not Start No fuel • Air in the fuel system •• Water in the fuel system pipe clogged • Fuel Fuel filter clogged • Excessive high viscosity of fuel or engine oil • at low temperature • Fuel with low cetane number • Fuel leak due to loose injection pipe retaining nut Incorrect injection timing Fuel camshaft worn Injection nozzle clogged Injection pump malfunctioning Fuel lift pump malfunctioning 5eizure of crankshaft,
1 ENGINE 81700·82100·82400 WSM,11770 Probable Cause Symptom Either Black or Dark Gray Exhaust Gas Is Observed Deficient Output til til ... ... .. Lessen the load Use the specified fuel Clean or replace Clean or replace Overload Low grade fuel used Fuel filter clogged Air cleaner clogged Incorrect injection timing Engine's moving parts seem to be seizing Uneven fuel injection .. Deficient nozzle injection .. Compression leak Excessive Lubricant Oil Consumption ..
1 ENGINE 81700·82100·82400 WSM,11770 Symptom Engine Overheated Probable Cause oil insufficient •• Engine Fan belt broken or tensioned improperly water insufficient • Cooling Radiator net and radiator fin clogged with • dust Inside of radiator corroded • Cooling flow route corroded •• Radiatorwater cap defective Radiator hose damaged • Overload running • Head gasket defective •• Incorrect injection timing Unsuitable fuel used • 1-53 Solution Reference Page Replenish Replace or adjust Replenish Clean
1 ENGINE 61700'62100·62400 WSM,11770 SERVICING SPECIFICATIONS ENGINE BODY Cylinder Head Item Factory Specification Allowable Limit - 0.05mm 0.0019 in. 0.55 to 0.70 mm 0.0217 to 0.0276 in. - 2.84 to 3.23 MPa 29 to 33 kgf/cm 2 412 to 469 psi 2.25 MPa 23 kgf/cm 2 327 psi Cyli nder head surface flatness Top clearance Compression pressure 10% or less Variance among cylinders Valves 0.145 to 0.185 mm 0.0057 to 0.0072 in. - IN. 2.12 mm 0.0835 in. - EX. 2.12 mm 0.0835 in. - IN. 1.047 rad.
1 ENGINE 61700·62100·62400 WSM,11770 Valve Spring Factory Specification Allowable Limit 37.0 to 37.5 mm 1.457 to 1.476 in. 36.5 mm 1.437 in. 117.4 N/31.0 mm 11.97 kgf/31.0 mm 26.4lbs/l.22 in. 100.0 N/31.0 mm 10.2 kgf/31.0 mm 22.5 Ibs/l.22 in. - 1.0mm 0.039 in. 0.016to 0.045 mm 0.0006to 0.0018 in. 0.10mm 0.0039 in. Rocker arm shaft O.D. 11.973 to 11.984 mm 0.4714to 0.4718 in. - Rocker arm I.D. 12.000 to 12.018 mm 0.4724 to 0.4731 in. - 0.020 to 0.062 mm 0.0008to 0.0024 in. 0.07 mm 0.
1 ENGINE B1700·B21 00'B2400 WSM, 11770 Timing Gear Factory Specification Allowable Limit 0.032toO.115mm 0.0013 to 0.0045 in. 0.15 mm 0.0059in. Idle gear 1 - Cam gear 0.036toO.114mm 0.0014to 0.0045 in. 0.15 mm 0.0059in. Idle gear 1 -Injection pump gear 0.034to 0.116 mm 0.0013 to 0.0046 in. 0.15 mm 0.0059in. Injection pump gear - Governor gear 0.030toO.117mm 0.0012 to 0.0046 in. 0.15 mm 0.0059in. 0.020 to 0.054 mm 0.0008 to 0.0021 in. 0.10 mm 0.0039 in. Idle gear bushing I.D. 26.000 to 26.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 Piston. Piston Ring (Continued) Item Factory Specification Allowable Limit Ring gap Compression ring 1 0905-010 01005-010 01105-010 0.25 to 0.40 mm 0.0098 to 0.0157 in. 0.30 to 0.45 mm 0.0118to 0.0177 in. 1.25 mm 0.492 in. Compression ring 2 0905-010 01005-010 0.25 to 0.40 mm 0.0098 to 0.0157 in. 1.25 mm 0.492 in. 01105-010 0.30 to 0.45 mm 0.0118to 0.0177 in. 0.25 to 0.40 mm 0.0098 to 0.0157 in. 1.25 mm 0.492 in.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 Crankshaft (Continued) Factory Specification Allowable Limit 0.029 to 0.091 mm 0.0011 to 0.0036 in. 0.2mm 0.0079 in. Crank pin 0.0. 39.959 to 39.975 mm 1.5732 to 1.5738 in. - Crank pin bearing 1.0. 40.004 to 40.050 mm 1.5750 to 1.5768 in. - 0.15 to 0.31 mm 0.0059 to 0.0122 in. 0.5mm 0.0197 in. 0905-010 72.000 to 72.019 mm 2.8346 to 2.8354 in. +0.15mm 0.0059 in. 01005-010 76.000 to 76.019 mm 2.9921 to 2.9929 in. 01105-010 78.000 to 78.019 mm 3.
1 ENGINE 81700·82100'82400 WSM,11770 Radiator Item Factory Specification Allowable Limit Water tightness at specified pressure 137 kPa 1.4 kgf/cm 2, 20 psi - Radiator water tightness Radiator cap ai r leakage 10 seconds or more 0.9 ~ 0.6 kgf/cm 2 88 ~ 59 kPa, 13 ~ 9 psi - 7 to 9 mm/1 0 kgf 0.28 to 0.35 in./ 10 kgf (22.1 Ibs.) - 0.30 to 0.33 rad. before T.D.C. (17°to 19°) - Fuel tightness of pump element - 14.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 TIGHTENING TORQUES Screws, bolts and nuts must be tightened to the specified torque using a torque wrench. Several screws, bolts and nuts such as those used on the cylinder head must be tightened in proper sequence and at the proper torque. (For general use screws and nuts: See page G-8) Item Drag link slotted nut Front axle frame mounting screw Steering wheel mounting nut Flare nut (P.S.
1 ENGINE 81700·82100·82400 WSM, 11770 CHECKING, DISASSEMBLING AND SERVICING [1] SEPARATING THE ENGINE Draining Cooling Water A 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. Loosen the drain cock (2) from the radiator hose to drain cooling water. 2. Remove the radiator cap (1) to drain cooling water completely. 3.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 Drain the Transmission Oil 1. Place oil pans underneath the transmission case. 2. Remove the four drain plugs (1) at the bottom of the transmission case. 3. Drain the transmission oil. 4. After draining, screw in the four drain plugs (1). (When refilling) • Fill new oil from filling port after removing the filling plug (2) up to the upper notch on the dipstick.
1 ENGINE 81700·82100·82400 WSM,11770 Radiator Hoses, Muffler Pipe and Hydraulic Pipes 1. Loosen the clamps and disconnect radiator hoses (1). 2. Remove the muffler pipe (2). 3. Disconnect the radiator stay (3) and then dismount the radiator. 4. Dismount the battery (6). 5. Loosen the clamps of hydraulic hoses and remove the battery stay with oil cooler then remove the delivery pipe (5) (from HST) and return pipe (4) (from oil cooler) (HST type).
1 ENGINE 81700·82100'82400 WSM,11770 separating Front Axle Assembly 1. Remove the front axle frame mounting screws and separate the front axle assembly from the engine. (When reassembling) Front axle frame mounting screw Tightening torque 39.2 to 64.7 N'm 4.0 to 6.6 kgf'm 28.9 to 47.7 ft-Ibs Steering Wheel 1. Remove the steering wheel cap. 2. Remove the steering wheel mounting nut and remove the steering wheel with a steering wheel puller (Code No. 0791651090).
1 ENGINE B1700·B2100·B2400 WSM,11770 Universal Joint and Bearing Holder 1. Loosen the clamp and slide the universal joint cover (1) to the rear. 2. Tap out the spring pins (2) and then slide the universal joint (3) to the rear. 3. Remove the bearing holder (4) and universal joint. (When reassembling) • Make sure the yokes (5) of universal joints must always be in the same plane as shown in the figure . • Apply grease to the splines of the propeller shaft and universal joint. ..
1 ENGINE B1700·B2100·B2400 WSM,11770 separating the Engine from Clutch Housing 1. 2. 3. 4. Remove the wiring harness. Place the jack under the center frame. Hoist the engine by the chain at the engine hook. Remove the engine mounting screws and separate the engine from the clutch housing. (When reassembling) • Apply liquid gasket (Three Bond 1208D or equivalent) to joint face of the engine and clutch housing. Engine mounting M8 screw 17.7 to 20.6 N'm 1.8to2.1 kgf·m 13.0to 15.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 [2] ENGINE BODY CHECKING AND ADJUSTING Compression Pressure 1. Run the engine until it is warmed up. 2. Stop the engine, and then remove the air cleaner and muffler. 3. Remove the injection nozzles from all cylinders, and set a compression tester (Code No. 07909-30207) with the adaptor to the nozzle hole. 4. Keep the engine stop lever at "Stop Position". 5. While cranking the engine with cell starter, measure the compression pressure. 6.
1 ENGINE 61700·62100'62400 WSM, 11770 Valve Clearance III IMPORTANT • Valve clearance must be checked and adjusted when engine is cold. 1. Remove the head cover, the glow plugs and the timing window cover on the clutch housing. 2. Align the "He" mark line on the flywheel and center of timing window so that the NO.1 piston comes to the compression or overlap top dead center. 3. Check the following valve clearance marked with "0" using a feeler gauge. 4.
1 ENGINE B1700·B2100·B2400 WSM,11770 DISASSEMBLING AND ASSEMBLING (1) Cylinder Head and Valve Dynamo, Fan Belt and Muffler 1. Remove the dynamo (1) (or alternator) and fan belt (2). 2. Remove the cooling fan (3) and fan pulley. (When reassembling) • Check to see that there are no cracks on the belt surface. III IMPORTANT • After reassembling the fan belt, be sure to adjust the fan belt tension. (1) Dynamo (2) Fan Belt (3) Cooling Fan Head Cover 1. Remove the head cover (1).
1 ENGINE B1700·B2100·B2400 WSM,11770 Overflow Pipe, Nozzle Holder Assembly and Glow Plug 1. Remove the overflow pipe assembly {1}. 2. Detach the nozzle holders using a 21 mm deep socket wrench. 3. Remove the copper gasket {3} and heat seal {4}. 4. Remove the glow plug cock and glow plugs. (When reassembling) .. Replace the copper gasket and heat seal with new one. Nozzle holder assembly 49.0 to 68.6 N'm 5.0 to 7.0 kgf'm 36.2 to 50.6 ft-Ibs Overflow pipe assembly retaining nut 19.6 to 24.5 N'm 2.
~ ~~--------~ 1 ENGINE B1700·B21 00·B2400 WSM, 11770 Push Rods 1. Remove the push rods (1). (When reassembling) • When putting the push rods onto the tappets, check to see if their ends are properly engaged with the grooves. (1) Push Rods (2) Tappet 2 C112F022 (1) ~ (14) Head Bolt Fastening Procedure 0343F118 [AI Grommet Cylinder Head 1. Remove the cylinder head. Reverse the fastening procedure shown in the photograph to loosen the head bolts. 2. Remove the head gasket.
1 ENGINE 81700·82100·82400 WSM,11770 Tappets 1. Remove the six tappets (1) from the crankcase. (When reassembling) • Visually check the contact between tappets and cams for proper rotation. If a defect is found, replace tappets. • Before installing the tappets, apply engine oil thinly around them. (1) Tappet Valves 1. Remove the valve caps. 2. Remove the valve spring collet, pushing the valve spring retainer by valve spring replacer. 3. Remove the valve spring retainer, valve spring and valve stem seal.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 (2) Timing Gears and Camshaft Fan Drive Pulley 1. Set the stopper to the flywheel. 2. Remove the screw and detach the fan drive pulley (1). (When reassembling) • Check to see the fan drive pulley is aligned with its aligning mark. Tightening torque 235.4 to 245.2 N'm 24.0 to 25.0 kgf'm 173.6 to 180.8 ft-Ibs Crankshaft bolt (2) Aligning Mark (1) Fan Drive Pulley Fuel Pump, Hour Meter Gear Case 1. Remove the fuel pump (1). 2. Remove the hour meter gear case (2).
1 ENGINE B1700·B2100·B2400 WSM,11770 Engine Stop Solenoid 1. Remove the engine stop solenoid (1). (When reassembling) .. Apply a thin coat of liquid-type gasket (Three Bond 1215 or equivalent) to both surfaces of the solenoid's cover packing. • Confirm the convex part of the flange of the engine stop solenoid has fit into the hole, and then fasten the bolts. (1) Engine Stop Solenoid Speed Regulating Plate 1.
1 ENGINE B1700·B2100·B2400 WSM,11770 Fuel Camshaft 1. Remove the stopper and then the fuel camshaft. (When reassembling) • Securely fix the fuel camshaft with the stopper. 2. Remove the fuel feed pump cam (4) from the injection pump gear(1). (When reassembling) • Check to see each aligning mark is aligned. (1) Injection Pump Gear (2) Fuel Camshaft (3) Aligning Mark (4) Fuel Feed Pump Cam Governor Shaft 1. Remove the hydraulic pump. 2. Remove the external snap ring (1) from the governor shaft (2). 3.
1 ENGINE B1700·B2100·B2400 WSM,11770 Fork Lever 1. Remove the start spri ng (7). 2. Remove fork lever shaft cover (1). 3. Pull out the fork lever shaft (4), and remove the spacer (2), bearing (3), fork levers 1 (6) and 2 (5), etc. III IMPORTANT • Be careful in handling the thrust lever since the sintered part will be broken if it's dropped on the floor (or the ground).
~-~--- ~-~~--- 1 ENGINE 81700'82100·82400 WSM,11770 (3) Connecting Rod and Piston Oil Pan, Oil Strainer 1. Remove the oil pan (1). 2. Remove the oil strainer (2). (When reassembling) • After cleaning the oil strainer (2), check to see that the filter mesh is clean, and install it. • Visually check the O-ring, apply engine oil, and install it. • Securely fit the O-ring to the oil strainer. • Apply liquid-type gasket (Three Bond 1215 or its equivalent) tothe oil pan side ofthe oil pan packing.
1 ENGINE B1700·B2100·B2400 WSM,11770 Piston Ring, Piston Pin 1. Remove the piston ring with a piston ring tool. 2. Pull out the piston pin and remove the connecting rod. IIIIIIiIIIMPORTANT • Properly arrange the pistons and the connecting rods for their right combinations. 4 C095F122 7 (When reassembling) • Fit the piston to the connecting rod with mark 1 (7) on the piston head set opposite to the mark (6) of the connecting rod.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 Main Bearing Case Cover 1. Remove the bolts fixing the main bearing case cover. First, remove inner bolts and then outer bolts. 2. Screw the newly removed bolts into the outer bolt holes on the main bearing case cover to remove the cover. Up ward Up ward (When reassembling) lID Fit the cover giving care to the directions of the bearing case packing and the bearing case cover packing.
1 ENGINE B1700'B21 00'B2400 WSM, 11770 Main Bearing Case 1. Remove bearing case bolt 1, and the main bearing case (1), (2), (3) from the crankshaft. /' 1 II IMPORTANT • Properly arrange the main bearing cases and the bearings for their right combinations. 2 (When reassembling) • Apply engi ne oi I to the beari ngs and fit the case. • Fit the main bearing case with the FLYWHEEL mark set on the side of the flywheel.
1 ENGINE 81700·82100·82400 WSM,11770 Valve Recessing 000 o o 0 0 llI'UL..--c o =O~oo~e ~----------- 0 ~ 0 °OOOOOO( ~~c::::::: 0321 F203 1. Clean the cylinder head, the valve face and seat. 2. Insert the valve into guide. 3. Measure the valve recessing with a depth gauge. 4. If the measurement exceeds the allowable limit, replace the valve.
1 ENGINE (A) B1700·B21 00'B2400 WSM, 11770 Replacing Valve Guide (8) 1. Remove the spacer (1). 2. Press the used valve guide out from the cylinder head's lower end. 3. Before pressing in, apply oil on the outer surface of the valve guide, place a spacer of the specified protrusion allowance (C) on the cylinder head, and press in the spacer from above. 4. After press-fitting, finish the valve guide by means of reamer machining to specified dimension.
1 ENGINE 81700·82100'82400 WSM,11770 Correcting Valve and Valve Seat II NOTE • Before correcting the valve and seat, check the valve stem and the I.D. of the 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 refacer. 0087F056 2} Correcting Valve Seat O,26rad'1==~~~~i~ 0.79rad, 15° 45° (30°) 0087F057 A ~ ~;'J::~ ~ B \ Intake ~- O.52rad ;&'M;:,~'\ =/i(;, \ ::.
B1700·B21 00·B2400 WSM, 11770 1 ENGINE Free Length and Tilt of Valve Spring 1. Measure the length A with vernier calipers. If the measurement is less than the allowable limit, replace. 2. Put the spring on a surface plate, place a square on the side of the spring, and check to see if the entire side is in contact with the square. Rotate the spring and measure the maximum B. Ifthe measurement exceeds the allowable limit, replace. 3. Check the entire surface of the spring for scratches. Replace it, if any.
1 ENGINE 81700·82100·82400 WSM,11770 (2) Timing Gears and Camshaft Timing Gear Backlash 1. Set a dial indicator (lever type) with its tip on the gear tooth. 2. Move the gear to measure the backlash, holding its mating gear. 3. If the backlash exceeds the allowable limit, check the oil clearance of the shafts and gear. 4. If the oil clearance is proper, replace the gear. Crank gear Idle gear Idle~ Cam gear Idle gear Injection pump gear Injection pump gear Governor gear Factory spec. 0.032toO.115mm 0.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 Camshaft Alignment 1. Support the camshaft with V-blocks on the surface plate and set a dial indicator with its tip on the intermediate journal at right angle. 2. Rotate the camshaft on the V-blocks and get the misalignment (half ofthe measurement). 3. If the misalignment exceeds the allowable limit, replace the camshaft. Camshaft alignment Allowable limit 0.01 mm 0.0004 in. C019F043 Intake and Exhaust Cam Height t81 1.
1 ENGINE 81700·82100·82400 WSM,11770 Replacing Idle Gear Bushing 1. Press the used bushings out using a idle gear bushing replacing tool. 2. Press fit new bushing. 8083F056 (3) Piston and Connecting Rod Piston Pin-Bore I.D. 1. Measure the 1.0. of the piston pin bore in both the horizontal and vertical directions with a cylinder gauge. 2. If the measurement exceeds the allowable limit, replace the piston. Factory spec. 22.000 to 22.013 mm 0.96614toO.86665 in. Allowable limit 22.05 mm 0.86811 in.
1 ENGINE B1700·B2100·B2400 WSM,11770 Replacing Connecting Rod Small End Bushing (When removing) 1. Press out the small end bushing with a connecting rod small end bushing replacing tool. B083F054 45° (0.785rad.) (When installing) 1. Clean a new small end bushing and bore, and apply engine oil to them. 2. Insert a new bushing onto the tool and press-fit it with a press so that the seam (1) of bushing positions as shown in the figure, until it is flash with the connecting rod. 3.
1 ENGINE B1700'B21 00·B2400 WSM, 11770 Connecting Rod Alignment III NOTE .. Since the I.D. of the connecting rod small end bushing is the basis of this check, check the bushing for wear beforehand. ST10F040 1. Install the piston pin into the connecting rod. 2. Install the connecting rod on the connecting rod alignment tool (Code No: 07909-31661). 3. Put a gauge over the piston pin and move it against the face plate. 4.
1 ENGINE 81700·82100·82400 WSM,11770 Oil Clearance between Crank Pin and Crank Pin Bearing 1. Clean the crank pin and crank pin bearing. 2. Put a stri p of press gauge (Code No: 07909-30241) on the center of the crank pin in each direction as shown in the figure. II IMPORTANT .. Never insert the press gauge into the crank pin oil hole. 0087F068 0087F069 3. Install the connecting rod cap and tighten the screws to the specified torque (41.2 to 46.1 N'm, 4.2 to 4.7 kgf'm, 30.4 to 34.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 o to 0.3mm 0087F072 Replacing Crankshaft Bearing 1 (When removing) 1. Press out the bearing 1 with crankshaft bearing 1 replacing tool. (When installing) 1. Clean a new bearing 1 and bore, and apply engine oil to them. 2. Press fit a new bearing 1 using a inserting tool, taking due care to see that the seam of bearing 1 faces the exhaust manifold side. (1) Seam Oil Clearance between Crankshaft Journals and Crankshaft Bearings 2 0087F073 1.
1 ENGINE B1700·B2100·B2400 WSM,11770 Undersized and Oversized Bearing (5) (4) If the standardsize bearing cannot be employed due to excessive wear of the crankpin and crank journal, employ undersize or oversize bearings. For under size or oversize bearing use, follow the precautions noted below. • Grind the crankpin and journal with a wheel which has specified round corner and width without shoulder. 1. 2.8 to 3.2 mm (0.1102 to 0.1260 in.) 2. 2.3 to 2.7 mm (0.0906 to 0.1063 in.) 3.
1 ENGINE B1700·B2100·B2400 W5M,11770 (5) Cylinder UX(b) \J9---(a) CD Er ® ® 0087F074 (a) (b) (1) (2) (3) At a right angle to the piston pin In the direction of the piston pin Top (About 20 mm (0.787 in.) from the top edge) Middle (About 40 mm, 1.575 in.) Bottom (About 100 mm,3.937 in.) Wear of Cylinder 1. Measure the cylinder inner diameter using the cylinder gauge at six points shown in the figure (directions (a) and (b) at points (1), (2) and (3».
1 ENGINE 81700·82100·82400 WSM,11770 [3] LUBRICATING SYSTEM CHECKING Engine Oil Pressure 1. Remove the oil switch and set a pressure tester (Code No: 07916-32031). 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 . .. Engine oil insufficient .. Oil pump defective .. Oil strainer clogged .. Oil gallery clogged .. Excessive oil clearance of bearing ..
1 ENGINE B1700·B2100·B2400 WSM,11770 Clearance between Rotor and Cover 1. Put a strip of press gauge (Code No: 07909-30241) onto the rotor face with grease. 2. Install the cover and tighten the screws. 3. Remove the cover carefully, and measure the width of the press gauge with a sheet of gauge. 4. If the clearance exceeds the factory specification, replace oil pump rotor assembly. End c1ea ra nce between rotor and cover 0.025 to 0.75 mm 0.00098 to 0.002953 in. Factory spec.
1 ENGINE B1700·B21 00·B2400 WSM, 11770 (3) Radiator A CAUTION • When removing the radiator cap, wait at least ten minutes after the engine has stopped and cooled down. Otherwise, hot water may gush out, scalding nearby people. Radiator Water Leakage 1. Pour a specified amount of water into the radiator. 2. Set a radiator tester (Code No: 07909-31551). Increase water pressure to the specified pressure. 3. Check each section for water leakage. 4. When water leakage is excessive, replace the radiator.
1 ENGINE B1700·B2100·B2400 WSM,11770 [5] FUEL SYSTEM CHECKING AND ADJUSTING (1) Injection Pump Injection Timing III IMPORTANT • When inspecting the fuel injection timing, the timing control actuates during starting and the correct fuel injection timing cannot be measured. 3 o 1. Remove the injection pipes. 2. Remove the engine stop solenoid, push in the control rack of the injection pump by 5 mm (0.2 in.) and hold it at that position. 3.
1 ENGINE 81700'82100·82400 W$M, 11770 Fuel Tightness of Pump Element 1. Remove the injection pipes and glow plugs, and install the pressu re tester. 2. With the speed control lever at the full injection position, turn the crankshaft counterclockwise (facing the flywheel). 3. If the pressure does not build up to the fuel injection pressure, replace the delivery valve with new one and test again. 4. If the pressure does not built up more than the fuel injection pressure, replace the injection pump assembly.
1 ENGINE B1700·B2100·B2400 WSM,11770 Nozzle Spraying Condition [al lb] 1. Set the injection nozzle to a nozzle tester and check the nozzle spraying condition. 2. If the spraying condition is defective, replace the nozzle piece. [a] Good [b] Bad 0087F083 Fuel Tightness of Needle Valve Seat 1. Set the injection nozzle to a nozzle tester. Applya pressure 12.75 MPa (130kgf/cm 2 , 1849 psi). 2. After keeping the nozzle under this pressure for 10 seconds, check to see if fuel leaks from the nozzle. 3.
1 ENGINE 81700·82100·82400 WSM,11770 (2) 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. Tightening torque (1) (2) (3) (4) Nozzle Holder Adjusting Washer Nozzle Spring Push Rod 0087F084 1-550 Nozzle holder 34.3 to 39.
o M&CHANIBM CONTENTS [1] FEATURES [2] LINKAGE MECHANISM [3] OPERATION 2-M1 2-M1 2-M2
2 CLUTCH B1700·B21 00·B2400 WSM, 11770 [1] FEATURES This tractor is used dry single plate type clutch. The clutch is located between the engine and transmission and is operated by stepping on the clutch pedal. When the clutch pedal is depressed, the clutch is disengaged and when it is released, the clutch is engaged and power from the engine is transmitted to the transmission.
2 CLUTCH B1700·B21 00'B2400 WSM, 11770 [3] OPERATION ®r ® ® 5 III Clutch "Engaged" When the clutch pedal is not depressed, the clutch release bearing (6) and the fingers of diaphragm spring (4) are not connected to each other. Accordingly, the pressure plate (2) is tightly pressed against the flywheel (1) by the diaphragm spring (4).
SGRVICING CONTENTS TROUBLESHOOTING SERVICING SPECIFICATIONS TIGHTENING TORQUES CHECKING, DISASSEMBLING AND SERVICING CHECKING AND ADJUSTING DISASSEMBLING AND ASSEMBLING [1] SEPARATING ENGINE FROM CLUTCH HOUSING [2] SEPARATING CLUTCH ASSEMBLY SERVICING 2-51 2-52 2-52 2-53 2-53 2-54 2-54 2-58 2-59
2 CLUTCH 81700·82100·82400 WSM,11770 TROUBLESHOOTING Probable Cause Symptom Clutch Drags pedal free play excessive • Clutch Dust on clutch disc generated from clutch 2-53 Replace Replace Replace (Pressure plate assembly) 2-59 2-510 2-510 CI utch pedal free play too small •• Clutch disc excessively worn Grease or oil on clutch disc facing •• Clutch disc or pressure plate warped Adjust Replace Replace Replace Replace Replace (Pressure plate assembly) 2-53 2-510 2-59 2-510 2-510 2-510 or oil on clut
2 CLUTCH B1700·B21 00'B2400 WSM, 11770 SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit 20to30 mm 0.8 to 1.2 in. - 18to22 mm 0.70 to 0.87 in. - Clutch Pedal Free play Clutch Pedal Stopper Bolt Height Clutch Disc Disc Surface to Rivet Top (Depth) - 0.3mm 0.012in. Clutch Disc Boss to Gear Shaft Backlash (Displacement Around Disc Edge) - 2.0mm 0.079 in. Pressure Plate Flatness - 0.2mm 0.008 in. Diaphragm Spring Mutual Difference - 0.5mm 0.020 in.
2 CLUTCH B1700·B2100·B2400 WSM,11770 CHECKING, DISASSEMBLING AND SERVICING CHECKING AND ADJUSTING Clutch Pedal Free Travel A GIl CAUTION When checking, park the tractor on flat ground, apply the parking brake, stop the engine and remove the key. 1. Slightly depress the clutch pedal and measure free travel at top of pedal stroke. 2. If the measurement is not within the factory specifications, loosen the lock nut (2) and adjust the clutch rod (1) length. 3.
2 CLUTCH 81700'82100·82400 WSM,11770 DISASSEMBLING AND ASSEMBLING [1] SEPARATING ENGINE FROM CLUTCH HOUSING ~r1l\)ILJ~>?"-'--z=:T"\ Drain Transmission Oil A CAUTION • Be sure to stop the engine before checking and changing the transmission oil. 1. Place an oil pan underneath the transmission case. 2. Remove the drain plugs (1) at the bottom of the transmission case to drain transmission oil. 3. Drain the transmission oil. 4. After draining, screw in the four drain plugs.
2 CLUTCH B1700·B2100·B2400 WSM,11770 Battery, Oil Cooler and Hydraulic Pipes (HST Type) 1. Disconnect the battery cords (1) and dismount the battery (2). 2. Loosen the clamps and remove the battery base (6) with oil cooler (3) then remove the delivery pipe (4) and return pipe (5). III NOTE .. When disconnecting the battery cords, disconnect the grounding cord first. When connecting the positive cord first.
2 CLUTCH B1700·B21 00·B2400 WSM, 11770 Fuel Tank 1. Disconnect the fuel hose between fuel filter and fuel tank at the fuel filter side, then drain fuel completely. 2. Remove the fuel tank frame stay (1). 3. Disconnect the regulator and hazard unit connectors, and remove the Iead wi re for fuel gauge. 4. Disconnect the fuse box (4). 5. Dismount the overflow hoses (5) of fuel line. 6. Remove the tank flame (2) with fuel tank (3).
2 CLUTCH B1700·B2100·B2400 WSM,11770 Universal Joint and Bearing Holder 1. Loosen the clamp and slide the universal joint cover (1) to the rear. 2. Tap out the spring pin (2) and then slide the universal joint (3) to the rear. 3. Remove the bearing holder (4) and universal joint. (When reassembling) • Make sure the yokes (5) of universal joints must always be in the same plane as shown in the figure. • Apply grease to the spline of the propeller shaft and universal joint. ..
2 CLUTCH 81700·82100·82400 WSM,11770 separating the Engine from Clutch Housing 1. Disconnect the glow plug lead wire and tharmo sensor lead wire. And then disconnect the connectors for dynamo or 2P for alternator connector and starter motor lead wire. 2. Place the jack under the center frame. 3. Hoist the engine by the cain at the engine hook. 4. Remove the engine mounting screws and separate the engine from the clutch housing. (When reassembling) ..
2 CLUTCH 81700·82100·82400 WSM,11770 SERVICING Backlash between Clutch Disc and Clutch Shaft 1. Mount the clutch disc onto the propeller shaft. 2. Hold the propeller shaft so that it does not rotate. 3. Slightly move the disc and measure the displacement around disc edge. 4. If the measurement exceeds the allowable limit, replace clutch disc. Displacement around disc edge Allowable limit 2.0mm 0.079 in. Clutch Disc Wear 1.
2 CLUTCH B1700·B21 00·B2400 WSM, 11770 Checking Clutch Release Bearing 1. Check the clutch release bearing. If surface is worn excessively, or abnormal sounds occur, replace it.
MECHANISM CONTENTS [1] STRUCTURE [2] POWER TRAIN (1) Main Gear Shift Section (Manual Transmission Type) (2) Hydrostatic Transmission (HST Type) (2)-1. Structure (2)-2. Pump and Motor (2)-3. Oil Flow and Valves (2)-4. Operation (2)-5.
3 TRANSMISSION 81700·82100·82400 WSM,11770 [1] STRUCTURE • Manual Transmission Type J= 1 rJI ~I lAiD I[ , ~ RR\ D ~ rl ~ r:;:::;; ~ r-- DR ~ .J.J.. '- r--r--" ~ m- r-r ~ ./ 1 ~ rm1 III -... ~ Ilk! 'rlftTi h lib II / J[J "I]..Q I lIP ~ J G ~ t 'ill} tf no '11-- ~ \ / ~ "'" ~~~ --~))CJ ~.ijltQ ~R~;I r (2) Hi-Lo Gear Shift Section (8) Differential Gear Section (3) Front Wheel Drive Section (4) Rear-PTO Shaft Section t ...... :J.,.
3 TRANSMISSION 81700·82100·82400 WSM,11770 • Hydrostatic Transmission Type r--/ ~ [ JJ DTI I-~ L ~ !D(!p: Pi ~A@CJ ~~ 'Ct;;: l~O 1 R ---- 0) I I j '-- r- I::r ~ l~ ~ A~ JDJ. \-------: ~LD SVJ1 I-J )- - 1= ) ",\ ~ 1\ JDl I r-- I-' -[Iff 7 2 4 1 ::(): r---v 1\ 1 ,-y- UJ - j u u r'- L ---r-" - J I~;U I ~ 1JJ ~ IIII I ~ / ......... - ~ DiD W~ H / ~ '== [ Il....
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 [2] POWER TRAIN The transmission consists of a series of gears shown previously. It offers the most suitable speed for travelling and operation by combination of these gears. It transmits power to the front or rear axles and the PTa shaft, which are classified respectively as the travelling system and PTa system.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 (2) Hydrostatic Transmission (HST Type) (2)-1. Structure B177P274 L...- (1) Charge Relief Valve (2) Check and High Pressure Relief Valve (3) Trunnion Shaft --' (4) Center Section (5) Variable Displacement Piston Pump B177P097 L...- (6) Charge Pump (7) Input Shaft (Pump Shaft) (8) Housing Hydrostatic transmission is composed of variable displacement piston pump, fixed displacement piston motor, charge pump and valve system.
3 TRANSMISSION B1700·B21 00·B2400 WSM,11770 B177F304 (1) (2) (3) (4) (5) (6) Charge Relief Valve Charge Pump Housing Charge Pump Spacer Gerotor Assembly Center Section Needle Bearing (7) (8) (9) (10) (11) (12) Cylinder Block (Pump) Piston Assembly Thrust Plate Thrust Roller Bearing Swash plate Cradle Bearing (13) Housing (14) Check and High Pressure Relief Valve (15) Cylinder Block (Motor) (16) Motor Shaft The hydrostatic transmission consists of a variable displacement piston pump and a fixed displa
3 TRANSMISSION 81700·82100·82400 WSM,11770 (2)-2. Pump and Motor Pump and motor cylinder, each containing pistons, are connected by lines. Cylinders and lines are filled with oil. Pistons ride against swashplates located in pump and motor. In the pump, as the cylinder rotates, pistons move across the sl opi ng face of swashplate and slide in or out of their cylinder bores. The oil, forced out by the pump pistons, causes the motor pistons to slide out of their cylinder bores.
3 TRANSMISSION 81700·82100·82400 WSM,11770 • Charge Relief Valve 3 While pumped and filtered oil flows into the main oil circuit through the check valves, excessive oil passes to the case through the charge relief valve. Oil temperature 50°C (122°F) (1) Plug (2) Spring Valve operating pressure 294 to 491 kPa 3.0 to 5.0 kgf Icm 2 42.7 to 71.
3 TRANSMISSION B1700·B21 00'B2400 WSM; 11770 (2)-4. Operation • Neutral Oil Filter Cartridge -Charge Relief Valve r=, L Cooler Main Hydraulic Pump 22 f Imin [ 5.7 U.S.GPM 4.8Imp.GPM Sf/min [ 1.3 U.S.GPM 1 1 1.1Imp.GPM 17 f/min [ 4.4 U.S.GPM 3.7Imp.GPM 1~ Cylinder Block - (Pump) •• Transmission Case .
3 TRANSMISSION 81700·82100·82400 WSM,11770 • Forward Oil Filter Cartridge r=,,~_- Charge l Relief Valve Cooler Main Hydraulic Pump D port 22 £ /min ] [ 5.7 U.S.GPM 4.8Imp.GPM C port B port 5£/min [ 1.3 U.S.GPM 1.1 Imp.GPM 17 £/min ] [ 4.4 U.S.GPM 3.7Imp.GPM A port 1 Charge Pump J - Ot=:=:::....
3 TRANSMISSION 81700·82100·82400 WSM,11770 • Reverse . Oil Filter Cartridge r=-,~_-Charge Relief l Cooler Valve Thrust Ball Bearing Main Hydraulic Pump D pori 222/min ] [ .5.7 U.S.GPM 4.8Imp.GPM C port B pori 5 £/min [ 1.3 U.S.GPM 1.1Imp.GPM [ 17 2/min ] 4.4 U.S.GPM 3.7Imp.
3 TRANSMISSION 81700'82100·82400 WSM,11770 (2)-S. Control Linkage 8177F313 . (1) Trunnion Control Lever Assembly (2) Neutral Adjuster (3) Speed Control Rod (4) Speed Set Lever (5) Damper The speed control pedal (6) and the trunnion shaft of variable swashplate are linked with the speed control rod (3) and the trunnion control lever assembly (1). As the front footrest of the pedal is depressed, the swash pi ate rotates and forward travelling speed increases.
3 TRANSMISSION B1700·B21 00·B2400 WSM, 11770 (3) Hi-Lo Gear Shift Section Two kinds of power flow (from 4th shaft to spiral bevel pinion shaft) are available by operating the high-low gear shift lever to shift the gear (2) on the spiral bevel pinion shaft (4) .
3 TRANSMISSION B1700·B21 00·B2400 WSM,11770 [3] PTO SYSTEM (1) Rear-PTO Shift Section Besides neutral, one kind of power flow are available by operating the PTa shift lever to shift positions of 17T shifter gear (2) for rear-PTa. [Manual Transmission Type] (1) 2nd GearShaftwith 131.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 (2) Mid-PTO Section Besides neutral, one kind of power flow are available by operating the PTO shift lever to shift positions of shifter (5) or 11T shifter gear (7) for midPTO.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 (3) One-way Clutch Cam Section (Manual Transmission Type) (1) (2) (3) (4) (5) (6) _ 4 ClutchCamforRear-PTO Clutch Cam for Mid-PTO Clutch Cam Spring 3rd Shaft 5th Gear Shaft Mid-PTO Shaft To rear PTO shaft 3 B177F321 C161F083 The one-way clutch cam is also called an overrunning clutch. It is composed of a pair of clutch cams (7), (8) and a cam spring (3). One of the clutch cam is splined to the shaft (6), and the other is spl ined to the shaft (5).
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 [4] DIFFERENTIAL GEAR (1) Differential Function B177F321 (1) Spiral Bevel Pinion (2) Differential Pinion (3) Differential Side Gear (4) Spiral Bevel Gear (5) Differential Pinion Shaft (6) Differential Pinion 1. During Straight Running Rotation of the spiral bevel pinion (1) is transmitted to the spiral bevel gear (4) and differential case (8).
3 TRANSMISSION B1700·B21 00·B2400 WSM, 11770 (2) Differential Lock (1) (2) (3) (4) (5) (6) (7) (8) (9) Differential Pinions Shift Fork Differential Lock Lever Differential Gear Shaft Spiral Bevel Gear Differential Pinion Shaft Differential Case Differential Lock Clutch Differential Gear Shaft B177F322 When resistance to the right and left tires are greatly different due to ground conditions or type of work, the tire with less resistance slips and prevents the tractor from moving ahead.
SERVICING CONTENTS TROUBLESHOOTING SERVICING SPECIFICATIONS TIGHTENING TORQUES CHECKING AND ADJUSTING DISASSEMBLING AND ASSEMBLING [1] SEPARATING ENGINE FROM CLUTCH HOUSING [2] CLUTCH HOUSING [3] SEPARATING CENTER FRAME AND TRANSMISSION ASSEMBLy [4] TRANSMISSION CASE (1) Hydrostatic Transmission Type (2) Manual Transmission Type [5] DIFFERENTIAL GEAR CASE SERVICI NG [1] CLUTCH HOUSING [2] TRANSMISSION CASE (1) Hydrostatic Transmission Type (2) Manual Transmission Type [3] DIFFERENTIAL CASE 3-51 3-54 3-5
3 TRANSMISSION 81700·82100·82400 WSM,11770 TROUBLESHOOTING • HYDROSTATIC TRANSMISSION System will not operate in either direction Vibration and noise Loss of power I turn Check linkage good Check Check input shaft I---~I oil level 1------:l~1 (speed control pedal to neutral holder) notturn Repair or replace low good Check 1---'l~1 (charge pressure) good Check high relief pressure { defective Repair or replace Fill to proper level high above maximum allowable limit low below minimum allowable l
3 TRANSMISSION B1700·B21 00·B2400 WSM, 11770 TROUBLESHOOTING (Continued) Oil heat over Reduce , . . . machine load good no good good Check oil level f----~~llnspectradiator low net ~ t- defective Fill to proper level Check (charge pressure) high above maximum allowable limit low below minimum allowable limit Clean up or flush good I---~ Tractor will not stop in neutral position.
3 TRANSMISSION 81700·82100·82400 WSM,11770 TROUBLESHOOTING • CLUTCH HOUSING Symptom Noise from Clutch Housing Probable Cause oil insufficient • Transmission Gear worn or • Bearing worn broken • Solution Refill Replace Replace Reference Page 3-S 11 3-S16 3-S16 • TRANSMISSION CASE SECTION Symptom Noise from Transmission Gear Slip out of Mesh Probable Cause Solution Reference Page Transmission oil insufficient •• Gear worn or broken Improper between 6T spiral bevel • pinion andbacklash bevel gear
3 TRANSMISSION 81700·82100·82400 WSM,11770 SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Check and High Pressure Relief Valve Setting Pressure [Relief Valve] 21.6 MPa 220 kgf/cm 2 3129 psi -- Charge Relief valve Setting Pressure 294 to 490 kPa 3.0 to 5.0 kgf/cm 2 43 to 71 psi -- Gears Backlash 0.10toO.20mm 0.004to 0.008 in. 0.4mm 0.016in. Gear to Spl i ne Clearance 0.03 to 0.08 mm 0.0012toO.0031 in. 0.20 mm 0.0079 in. Sift Fork to Shift Gear Groove Clearance 0.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 SERVICING SPECIFICATIONS (Continued) Factory Specification Allowable Limit Backlash 0.1 to 0.3 mm 0.004 to 0.012 in. 0.4mm 0.016in. Adjust Shim Thickness 0.8 mm (0.0315 in.) 1.0 mm (0.0394 in.) 1.2 mm (0.0472 in.) Differential Case to Differential Side Gear Clearance 0.025 to 0.066 mm 0.0016 to 0.0029 in. Item Differential Pinion to Differential Side Gear 0.30 mm 0.0118 in. Differential Case 1.0. 32.000 to 32.025 mm 1.2598 to 1.2608 in.
3 TRANSMISSION 81700·82100·82400 WSM,11770 TIGHTENING TORQUES N-m kgf-m ft-Ibs Steering wheel mounting nut Pitman arm mounting nut Power steering assembly mounting screw 29.4t049.0 147 to 177 77.5 to 90.1 3.0 to 5.0 15.0to 18.0 7.9t09.2 21.7 to 36.2 108to 130 57.2 to 66.5 Clutch housing mounting screw and nut to engine M8screw M 10 nut Clutch housing rear cover mounting screw Center frame mounting screw and nut to transmission case 17.7 to 20.6 48.1 to 55.8 17.7t020.6 62.8to 72.5 1.8t02.1 4.
11: 36 06/27/97 To: ~1 310 370 4186 KUBOTA TnACTOR Dennis Hood From: Brinston Williams X1923 Date: June 27, 1997 Subject: "CHECKING AND ADJUSTING" HST Neutral WSM Instructions Dennis, Thanks for bring the incorrect wording of the HST Neutral Adjusting Procedures to our attention. The "NOTE" explanation on page 3-S7 of the new B-Series WSM is incorrect in its wording. I will contact Japan ASAP regarding this issue.
06/27/97 11: 37 ~1 KUBOTA TRACTOR 310 370 4186 -H-> SE SERyICE (32142) Bulletin No: SFI-A-97-008 (CORRECTED) .~ Adjusting Neutral " 1. Disconnect the brake rod RH (1). . 2. Loosen the lock nut (B) (9) and adjusting nut (6) (7) until springs (4) (5) are freely. 3. Loosen the lock nut (10) and neutral position adjusting nut (11) until washer welded on the rod (12) comes off from stay (13). 4. Remove the HST pedal damper (2). 5. Loosen the neutral adjuster (3) setting screw.
3 TRANSMISSION B1700·B21 00·B2400 WSM, 11770 CHECKING AND ADJUSTING Neutral 1. Disengage the front wheel drive lever. (Drive only rear wheels.) 2. Lift the rear of the tractor so that the rear wheels are off the ground and run the engine at low idling and drive only rear wheels. 3. Depress the one end of speed control pedal and release, and do the same at the other end. 4. If the rear wheels do not stop turning, adjust as following procedure . Se ~0 /C!/Io.o /u5"'f!Z;f1 c #' c; / ; .
B1700·B2100·B2400 WSM,11770 3 TRANSMISSION Oil Pressure in Hydrostatic Transmission 1. Clean and clear the work area,. and fully engage the parki ng brake. 2. Measure the following oil pressures using and HST adaptor A and B (refer to G-31) as instructed.
------- ------- - 3 TRANSMISSION 81700-82100'82400 WSM,11770 Check and High Relief Pressure A CAUTION • When checking, park the tractor on flat ground, apply the parking brake. 1. Remove the 8 mm (0.31 in.) hex socket head plug from P1 (1) or P2 (2) port (P1 is for forward and P2 is for reverse). 2. Assemble the HST adaptor A and threaded joint with the gasket between them. 3. Install the assembled HST adaptor A and threaded joint to P1 (forward) (1) or P2 (reverse) (2) port. 4.
3 TRANSMISSION B1700·B21 00·B2400 WSM, 11770 Charge Pressure A CAUTION • When checking, park the tractor on flat ground, apply the parking brake. 1. Remove the 6 mm hex. socket head plug from P3 port (3). 2. Assemble the HST adaptor B and thread joint with the gasket between them. 3. Install the assembled HST adaptor B and thread joint to P3 port. 4. Install the cable, thread joint in relief valve set pressure tester and low pressure gauge to threaded joint in order. 5. Run the engine at 2600 rpm. 6.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 DISASSEMBLING AND ASSEMBLING [1] SEPARATING ENGINE FROM CLUTCH HOUSING ~r1I\IILJ~>?"--'--z=r- Drain Transmission Oil A CAUTION • Be sure to stop the engine before checking and changing the transmission oil. 1. Place an oil pan underneath the transmission case. 2. Remove the drain plugs (1) at the bottom of the transmission case to drain transmission oil. 3. Drain the transmission oil. 4. After draining, screw in the four drain plugs.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 Battery, Oil Cooler and Hydraulic Pipes (HST Type) 1. Disconnect the battery cords (1) and dismount the battery (2). 2. Loosen the clamps and remove the battery base (6) with oil cooler (3) then remove the delivery pipe (4) and return pipe (5) . • NOTE • When disconnecting the battery cords, disconnect the grounding cord first. When connecting the positive cord first.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 Fuel Tank 1. Disconnect the fuel hose between fuel filter and fuel tank at the fuel filter side, then drain fuel completely. 2. Remove the fuel tank frame stay (1). 3. Disconnect the regulator and hazard unit connectors, and remove the lead wire for fuel gauge. 4. Disconnect the fuse box (4). 5. Dismount the overflow hoses (5) of fuel line. 6. Remove the tank flame (2) with fuel tank (3).
3 TRANSMISSION B1700·B21 00·B2400 WSM, 11770 Universal Joint and Bearing Holder 1. Loosen the clamp and slide the universal joint cover (1) to the rear. 2. Tap out the spring pin (2) and then slide the universal joint (3) to the rear. 3. Remove the bearing holder (4) and universal joint. (When reassembling) • Make sure the yokes (5) of universal joints must always be in the same plane as shown in the figure. • Apply grease to the spline of the propeller shaft and universal joint.
3 TRANSMISSION 81700·82100·82400 WSM,11770 Separating the Engine from Clutch Housing 1. Disconnect the glow plug lead wire and tharmo sensor lead wire. And then disconnect the connectors for dynamo or 2P for alternator connector and starter motor lead wire. 2. Place the jack under the center frame. 3. Hoist the engine by the cain at the engine hook. 4. Remove the engine mounting screws and separate the engine from the clutch housing.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 [2] CLUTCH HOUSING Clutch Rod and Release Fork 1. Remove the external snap ring (1). 2. Draw out the clutch rod (2) and remove the clutch release fork (3). 3. Take out the release hub with release bearing (4). (3) Clutch Release Fork (4) Release Bearing (1) External Snap Ring (2) Clutch Rod Clutch Housing Rear Cover 1. Remove the clutch housing rear cover (1).
3 TRANSMISSION 81700·82100'82400 WSM,11770 [3] SEPARATING CENTER FRAME AND TRANSMISSION ASSEMBLY Roll-Over Protective Structures (ROPS) and 3 Point Hitch 1. Remove the lower link (1) and the collar from the 3-point hitch shaft (2). 2. Remove the both sides tail lamps (6) with lamp frame. 3. Remove the both sides fender mounti ng screws. 4. Remove the PTO shaft cover (S) and connecti ng plate. 5. Remove the ROPS mounting screws and then bring down the RaPS. 6.
3 TRAN5M 15510N B1700·B2100·B2400 WSM,11770 Steering Wheel 1. Remove the steeri ng wheel cap. 2. Remove the steering wheel mounting nut and remove the steering wheel with a steering wheel puller. (Code No. 07916-51090) (When reassembling) Tightening torque 29.4 to 49.0 N'm 3.0 to 5.0 kgf·m 21.7 to 36.2 ft-Ibs Steering wheel mounting nut Meter Panel and Panel Under Cover 1. Remove the meter panel (2) and disconnect the meter panel connector (3) and hour-meter cable from the meter panel.
3 TRANSMISSION 81700·82100·82400 WSM,11770 Step, Fender, Tire and Seat 1. Remove the lowering speed adjusting knob and seat under cover (3). 2. Remove the rubber mat. 3. Disconnect the speed set rod (4) (HST Type) and parking brake rod (5). 4. Remove the clutch and brake springs. 5. Remove the left and right hand side steps. 6. Remove the cotter (1) setting bolt and nut, then place the jack under the transmission case, and set the rigid rack under the rear axles. 7.
3 TRANSMISSION B1700·B21 00·B2400 WSM, 11770 Universal Joint and Bearing Holder 1. Loosen the clamp and slide the universal joint cover (1) to the rear. 2. Tap out the spring pins (2) and then slide the universal joint (3) to the rear. 3. Remove the bearing holder (4) with propeller shaft and universal joint. (When reassembling) • Make sure the yokes (5) of universal joint must always be in the same plane as shown in the figure. • Apply grease to the spl i ne of the propeller shaft and universal joint.
3 TRANSM ISSION B1700·B2100·B2400 WSM,11770 HST Pedal (HST Type) 1. Tap out the spring pin (1) and remove the spring lock pins (2), the draw out the HST pedal (3) with damper (4). (When reassembling) • Tap in the spring pin (1) as shown in the figure below. (1) (2) (3) (4) B177P165 IIB II ~IIAII 4- Spring Pin Spring Lock Pin HST Pedal Damper [A] Outside [B] Inside B177F324 Suction Pipe, Delivery Pipe, Hydraulic Pipes and Rods 1.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 Separating Center Frame 1. Place the jacks under the transmission case and center frame. 2. Remove the center frame mounting screws and nuts, and separate the center from transmission case. (When reassembling) • Apply grease to the splines of HST pump shaft, 2nd gear shaft and ball coupling. • Reinstall the connecting pipe and two O-rings securely. Propeller Shaft and Connecting Pipe 1. Remove the connecting pipe (1) and propeller shaft (2) with ball coupling.
3 TRANSMISSION 81700·82100'82400 WSM,11770 [4] TRANSMISSION CASE (1) Hydrostatic Transmission Type Charge Pump Housing and Spacer 1. Remove the charge pump mounting hex. socket head screw, and remove the charge pump assembly (1) from the HST housing. 2. Remove the charge pump spacer (2) from the charge pump assembly. (When reassembling) • NOTE • Take care not to damage the O-rings. Tightening torque Charge pump mounting hex. socket head screw (1) Charge Pump Assembly (2) Spacer 15.7 to 20.6 N'm 1.6to2.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 Check and High Pressure Relief Valve 1. Remove the hex. socket head plug (1) and remove the spring (2) and relief valve assembly (3), (4). (When reassembling) • Take care not to damage the O-ring On the plug. Tightening torque B177P099 Hex. socket head plug (1) Plug (2) Spring 40.70 to 94.93 N'm 4.15 to 9.68 kgf'm 30.02 to 70.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 Swashplate 1. Remove the swashplate (1) from the housing. 2. Remove the thrust plate (4), thrust roller bearing (3) and thrust washer (2) from the swashplate. B177P103 (When reassembling) • Apply clean hydrostatic transmission oil to the thrust roller bearing. • Place the swashplate (1) into the housing, align the groove of swashplate and slot guide by keeping the slot guide from moving with a screw driver.
3 TRANSMISSION B1700·B21 00·B2400 WSM,11770 Pump Shaft 1. Remove the internal snap ring (1). 2. Tap the pump shaft (2) with a plastic hammer slightly to slide out it from the housing. (2) Pump Shaft (1) Internal Snap Ring Charge Relief Valve 1. Remove the charge relief valve plug (1). 2. remove the spring (2) and charge relief corn (3). (When reassembling) • NOTE· • If shims are placed at the bottom of the relief valve plug bore, place them as they are.
3 TRANSMISSION B1700·B21 00·B2400 WSM, 11770 Separating Hydraulic Cylinder and Rear Axle Case 1. Remove the external snap ring and remove the auxiliary speed change lever (1) with rod, rear-PTO shift lever (2) and mid-PTO shift lever (3). 2. Remove the hook and connecting plate (4). 3. Remove the top link bracket (5). 4. Remove the hydraulic cylinder mounting screws and dismount the hydraulic cylinder assembly (6). 5.
3 TRANSMISSION B1700·B2100·B2400 WSM.11770 Separating Mid-PTO Case and Transmission Case 1. Remove the mid-PTO case mounting screws and separate the mid-PTO case (1) from transmission case. 2. Remove the transmission case mounting screws and nuts and separate the transmission case (2) from the differential case (3). (When reassembling) • Apply liquid gasket (three Bond 1208D or equivalent) to joint face of the transmission case, differential case and mid-PTO B177P118 case.
3 TRANSMISSION B1700·B21 00·B2400 WSM,11770 Middle Shaft and 3rd Shaft 1. Tap out the middle shaft (1) and remove the 19T gear (2) with bearing. 2. Draw out the 3rd shaft (3) with 13T gear (4). (When reassembling) • When assembling the 19T gear (2), face the chamber side to the rear. • When installing the needle bearings (5) into the 13T gear, apply transmission oil to the needle bearings.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 4th Gear Shaft and Spiral Bevel Pinion Shaft 1. Remove the spiral bevel pinion shaft (1) with 15T-29T shifter gear (2), 13T gear (3). 2. Remove the 4th gear shaft (4) with 18T gear (5). (When reassembling) • When installing the spiral bevel pinion shaft, be sure to install the shim (6). B177P125 (1) Spiral Bevel Pinion Shaft (2) 15T-29T Shifter Gela (3) 13T Gear (4) 4th Gear Shaft (5) 18TGear (6) Shim Mid-PTO Shaft 1. Remove the spring (1) and ball (2). 2.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 Separating Hydraulic Cylinder and Rear Axle Case 1. Remove the connecting pipe (9) and propeller shaft (1 0). 2. Tap out the spring pins and remove the universal joint (11) with front wheel propeller shaft. 3. Remove the external snap ri ng and remove the auxi I iary speed change lever (2) with rod, rear-PTO shift lever (1) and mid-PTO shift lever (3). 4. Remove the hook and connecting plate (4). 5. Remove the top link bracket (5). 6.
3 TRANSMISSION B1700·B21 00·B2400 WSM, 11770 Separating Main Shift Cover, Mid-PTO Case and Transmission Case 1. Remove the main shift cover mounting screws and separate the main shift cover (1) with differential lock pedal. 2. Remove the mid-PTO case mounting screws and separate the mid-PTO case (2) from transmission case. 3. Remove the rear-PTO cover mounting screws and separate the rear-PTO cover (couldn't draw out completely). 4.
3 TRAN5M 15510N B1700·B2100·B2400 WSM,11770 Spiral Bevel Pinion Shaft and 20T Shifter Gear 1. Remove the external snap ring (1) and one-way clutch cam (2). 2. Remove the spiral bevel pinion shaft (3) with 13T -32T shifter gear (4), 13T gear (5), and shift fork with shift rod. 3. Remove the external snap ring and remove the 20T shifter gear (6). ~~---------1CV B177P154 -------.,CD (When reassembling) • When installing the spiral bevel pinion shaft, be sure to install the shim (7).
3 TRANSMISSION B1700·B21 00·B2400 WSM, 11770 Mid-PTO Shaft and One-way Clutch B177P158 1. Remove the mid-PTO case rear cover mounting screws and separate the rear cover (1). 2. Remove the bearing (2) and remove the friction plates (3), brake discs (4) and spring (5). 3. Remove the external snap ring (6) and remove the spring (7) and one-way clutch cam (8). 4. Remove the spring (9) and ball (10). 5. Draw out the dowel pin and remove the shift arm (11) with shifter. 6.
3 TRANSMISSION 81700·82100·82400 WSM,11770 Main Gear Shift Fork 1. Remove the cotter pin (1) and remove the spring (2) and ball (3). 8177P162 2. Draw out the shift rod (4) and remove the 1st-reverse gear shift fork (5). 3. Remove the 2nd-3rd gear shift fork (6), in the same way as the 1st-reverse shift fork removing procedure. 4. Take out the interlocker (7) and slide the shift arm stopper (8) and then remove the shi arm (9). 5. Remove the shift shaft (10) 6.
3 TRANSMISSION 81700·82100·82400 WSM,11770 Removing Differential 1. Remove the bearing holder mounting screws and remove the differential bearing holder (1). 2. Remove the differential assembly. (When reassembling) • Install the differenti I assembly, noting the number of shims (2) in the differentia case left side and differential bearing holder. 17.7 to 20.6 N'm 1.8to2.1 kgf.m 13.0 to 15.
3 TRANSMISSION B1700·B21 00·B2400 WSM, 11770 SERVICING [1] CLUTCH HOUSING Checking Bearing 1. Hold the inner race, and push and pull the outer race in all directions to check for wear and roughness. 2. Apply transmission oil to the bearing, and hold the inner race. Then, turn the outer race to check rotation. 3. If there is any defect, replace it. Checking Propeller Shaft Ball Coupling 1.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 Check and High Pressure Relief Valve 1. 2. 3. 4. Check the valve (3), (4) for scratches and damage. Check the valve seat in the center section for damage. Check the spring (2) for breakage and wear. If anything unusual, replace the high pressure relief valve complete assembly. (1) Plug (2) Spring (3) Check and High Pressure Relief Valve Assembly (Forward) (4) Check and High Pressure Relief Valve Assembly (Reverse) B177P099 Cylinder Block Assembly 1.
3 TRANSMISSION 81700·82100·82400 WSM,11770 Pump Shaft 1. Check the seal surface (1), the bearing surface (2) and the bearing (4). 2. Ifthe shaft is rough or groove, replace. 3. Ifthe bearing is worn, replace. (1) Seal Surface (2) 8earing Surface (3) Pump Shaft (4) 8earing 8177P107 Needle Bearing and Oil Seal 1. Check the oil seals (1) for damage. 2. Check the needle beari ngs (2) for wear. 3. Ifthe oil seals and bearings are worn, replace them. (1) Oil Seal (2) Needle 8earing Charge Relief Valve 1.
3 TRANSMISSION B1700·B21 00·B2400 WSM, 11770 Clearance between 13T Gear and 3rd Shaft 1. Measure the 13T gear 1.0. with an inside micrometer, and then 3rd shaft 0.0. with an outside micrometer. 2. Measure the 0.0. of two needles in the needle bearing with an outside micrometer. 3. Clearance is the difference between the gear 1.0. and the sum of shaft 0.0. and two needle 0.0.. 4. If the clearance exceeds the allowable limit, replace. B177P126 Factory spec. 0.007 to 0.046 mm 0.0003 to 0.0018 in.
3 TRANSMISSION 81700·82100·82400 WSM,11770 Clearance between Gear and Shaft 1. Measure the gear I.D. with a cylinder gauge, and then shaft O.D. with an outside micrometer. 2. Measure the O.D. of two needles in the needle bearing with an outside micrometer. 3. Clearance is the difference between the gear I.D. and the sum of shaft O.D. and two needles O.D.. 4. Ifthe clearance exceeds the allowable limit, replace it. 8177P126 Factory spec. 0.027 to 0.067 mm 0.0011 to 0.0025 in. Allowable limit 0.
3 TRANSMISSION B1700·B2100·B2400 WSM,11770 [3] DIFFERENTIAL CASE Clearance between Differential Case and Differential Side Gear 1. Measure the differential side gear boss 0.0. with an outside micrometer. 2. Measure the differential case I.D. and the spiral bevel gear I.D. with an inside micrometer. 3. If the clearance exceeds the allowable limit, replace it. Clearance between differential case and differential side gear Factory spec. 0.025 to 0.066 mm 0.0016 to 0.0029 in. Allowable limit 0.30 mm 0.
3 TRANSMISSION B1700·B21 00·B2400 WSM,11770 Backlash between Spiral Bevel Pinion and Spiral Bevel Gear 1. Set the dial indicator (lever type) with its finger on the end of spiral bevel pinion (4). 2. Move the spiral bevel pinion back and forth to each end and measure the side clearance. 3. If the side clearance exceeds the factory spec., adjust with the shims (3) at front end of spiral bevel pinion. 4. Set the dial indicator (lever type) with its fi nger on the tooth surface of bevel gear. 5.
MECHANISM CONTENTS [1] FEATURES 4-M1
4 REAR AXLE B1700·B2100·B2400 WSM,11770 [1] FEATURES B177F401 (1) Differential Gear Shaft (2) Ball Bearing (5) SpurGear (6) Spiral Bevel Gear (3) Rear Axle Case (4) Rear Axle The rear axles are the semifloating type with ball bearings (2) between the rear axle (4) and the rear axle case (3), which supports the rear wheel load as well as transmitting power to the rear wheels.
SERVICING CONTENTS TIGHTENING TORQUES ; CHECKING, DISASSEMBLING AND SERVICING DISASSEMBLING AND ASSEMBLING (1) Separati ng Rear Axle Case from Brake Case (2) Disassembling Rear Axle 4-51 4-51 4-51 4-51 4-52
4 REAR AXLE 81700·82100'82400 WSM,11770 TIGHTENING TORQUES Tighteni ng torques of screws and nuts on the table below are especially specified. (For general use screws and nuts: See page G-9) Item Rear wheel cotter setting bolt and nut Rear wheel hub mounting nut Rear axle case mounting screw N·m kgf·m ft-Ibs 123 to 147 108to 125 39 to 44 12.6t015.0 11.0 to 12.8 4.0t04.
4 REAR AXLE B1700·B2100·B2400 WSM,11770 RearWheel 1. 2. 3. 4. Place a jack under the transmission case. Loosen the rear wheel cotter (1) setting bolt and nut. Take outthe wheel hub pin (2). Take out the rear wheel. _IMPORTANT .. When re-fitting or adjusting a wheel, tighten the bolts to the following torques then recheck after driving the tractor 200 m (200 yards) and there after daily check service. (When reassembling) (2) Wheel Hub Pin Rear wheel cotter setting bolt and nut 123 to 147 N'm 12.6 to 15.
4 REAR AXLE 81700·82100'82400 WSM, 11770 57TGear 1. Remove the external snap ring (3) and remove the bearing (2). 2. Draw out the 57T gear (1) from the rear axle (4). (1) Gear (2) Bearing (3) External Snap Ring (4) Rear Axle Rear Axle 1. Tap out the rear axle to the outside of the rear axle case.
MECHANISM CONTENTS [1] FEATURES [2] OPERATION 5-M1 5-M2
5 BRAKES B1700·B21 00·B2400 WSM, 11770 [1] FEATURES 2 5 6 (1) (2) (3) (4) (5) (6) 4 Rear Axle Case Brake Cam Lever Parking Brake Lever Brake Pedal Brake Rod Turnbuckle B177F501 Independent mechanical wet disc brakes are used for the right and left travelling brakes. They are operated by the brake pedals through the mechanical linkages and provide stable braking and require little adjustment.
5 BRAKES B1700·B2100·B2400 WSM,11770 [2] OPERATION B177F502 (1) Cam Plate (2) Friction Plate (3) Brake Disc (4) Rear Axle Case (5) Steel Ball (6) Brake Shaft (Differential Gear Shaft) The brake body is incorporated in the rear axle case (4) filled with transmission oil and is designed to brake when the brake disc (3) spl i ned with the differential gear shaft (6) is pressed against the cam plate (1) by means of the cam mechanism incorporating steel balls (5).
SERVICING CONTENTS TROUBLESHOOTING SERVICING SPECIFICATIONS TIGHTENING TORQUES CHECKING. DISASSEMBLING AND SERVICING [1] BRAKE PEDAL CHECKING AND ADJUSTING SERVICING [2] BRAKE CASE DISASSEMBLING AND ASSEMBLING (1) Separating Rear Axle Case with Brake Assembly (2) Disassembling Brake Assembly SERVICING 5-51 .
5 BRAKES B1700·B21 00·B2400 WSM, 11770 TROUBLESHOOTING Uneven Braking Force Brake Drags Poor Braking Force Solution Probable Cause Symptom pedal play unevenly adjusted.
5 BRAKES 81700·82100·82400 WSM,11770 TIGHTENING TORQUES Tightening torques of screws and nuts on the table below are especially specified. (For general use screws and nuts: See page G-9) Item Rear wheel cotter setti ng bolt and nut Rear axle case mounting screw Nom kgfom ft·lbs 123 to 147 39 to 44 12.6to 15.0 4.0t04.
5 BRAKES 81700·B2100·B2400 WSM,11770 CHECKING AND ADJUSTING Brake Pedal Free Play 1. Press each brake pedal five times with a force of 147 to 294 N (15 to 30 kgf, 33 to 66Ibs.). 2. Press the center of the pedal (1) at a force of 39 to 58 N (4 to 6 kgf, 9 to Bibs), and measure the movement at the footrest of pedal. 3. If the measurement is not within the factory specifications, turn the turnbuckle (2) to adjust. 4. After adjustment, tighten the lock nut (3) firmly.
