BUSH HOG ® Model 3715/3710 Flex-Wing Rotary Cutter Operator’s Manual OPERATION l MAINTENANCE 06/09 Rev.1 $4.
CONGRATULATIONS! You have invested in the best implement of its type on the market today. The care you give your Bush Hog implement will greatly determine your satisfaction with its performance and its service life. We urge a careful study of this manual to provide you with a thorough understanding of your new implement before operating, as well as suggestions for operation and maintenance. If your manual should become lost or destroyed, Bush Hog will be glad to provide you with a new copy.
715/3710 ROTARY CUTTER TABLE OF CONTENTS SECTION/PARA PAGE SECTION/PARA Warranty ................................................2 Dealer Preparation Check List ...............3 Safety Alert Symbols..............................4 Safety Precautions.................................5 Federal Laws and Regulations ..............6 I. INTRODUCTION & DESCRIPTION ......7 1-1 Introduction ......................................7 1-2 Description.......................................7 II. PREPARATION FOR USE .....
LIMITED WARRANTY OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO Bush Hog warrants to the original purchaser of any new Bush Hog equipment, purchased from an authorized Bush Hog dealer, that the equipment be free from defects in material and workmanship for a period of one (1) year for non-commercial, state and municipalities’ use and ninety (90) days for commercial use from date of retail sale. Model 3715 / 3710 gearboxes are covered by a five (5) year limited warranty period.
DEALER PREPARATION CHECK LIST 3715 / 3710 ROTARY CUTTER BEFORE DELIVERING MACHINE — The following check list should be completed. Use the Operator’s Manual as a guide. r r r r r r r r r 1. Assembly completed. 2. Gearbox filled with oil. 3. All fittings lubricated. 4. All shields in place and in good condition. 5. All fasteners torqued to specifications given in Torque Chart. 6. Slip clutches have been checked for proper operation. 7. All decals in place and readable. (See decal page.) 8.
Safety Alert Symbol This Safety Alert Symbol means: “ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!” This symbol is used to call attention to safety precautions that should be followed by the operator to avoid accidents. When you see this symbol, carefully read the message that follows and heed its advice. Failure to comply with safety precautions could result in death or serious bodily injury.
IMPORTANT SAFETY PRECAUTIONS This symbol is used to call attention to safety precautions that should be followed by the operator to avoid accidents. When you see this symbol, carefully read the message that follows and heed its advice. Failure to comply with safety precautions could result in serious bodily injury.
IMPORTANT FEDERAL LAWS AND REGULATIONS* CONCERNING EMPLOYERS, EMPLOYEES AND OPERATIONS. *(This section is intended to explain in broad terms the concept and effect of the following federal laws and regulations. It is not intended as a legal interpretation of the laws and should not be considered as such). U.S. Public Law 91-596 (The Williams-Steiger Occupational and Health Act of 1970) OSHA This Act Seeks: “...
SECTION I INTRODUCTION AND DESCRIPTION Figure 1-1 Major Components Wing Lift Cylinder Height Adjustment Cylinder Power Divider Gearbox Blade Gearbox Hose Holder Rod Axle Spindle Assembly Driveline Laminated Tire Tongue Driveline Retainer Wing Transport Lock Discharge Shield Replaceable Skid Self Leveling Clevis Hitch Jackstand (Mount is adjustable to allow vertical positioning of jackstand - See Fig.
SECTION II PREPARATION FOR USE 2-1 ATTACHING TO TRACTOR E. Connect hydraulic lines to tractor auxiliary outlet(s). F. Unpin wing lift cylinders at rod end. Fully extend cylinders by pulling on clevis. Retract cylinders using hydraulic valve. This removes most of the air from cylinder. Repin cylinders. G. Attach driveline on tractor and cutter with constant velocity joint at tractor. Pull on each driveline section to be sure yokes lock into place.
Figure 2-3 Linkage Rod Jamnut Turnbuckle 2-4 WING ADJUSTMENT If wings are not level (parallel) from left to right with center deck section, the cutter will windrow and produce an uneven cut. Before first use and periodically thereafter, lower cutter to working position and check for this condition. If adjustment is necessary, proceed as follows: A. Remove wing transport lock pin from locked position. Swing link out of alignment with lug on wing. Replace pin in link for storage during operation.
SECTION III OPERATING INSTRUCTIONS 3-1 GENERAL SAFETY WARNING Only qualified people should operate this machine. Operator should wear hard hat, safety glasses, and safety shoes. It is recommended that tractor be equipped with Rollover Protective System (ROPS) and a seat belt be used. Before beginning operation, clear work area of objects that may be picked up and thrown. Check for ditches, stumps, holes or other obstacles that could upset tractor or damage cutter.
IMPORTANT DURING OPERATION, STOP AT REGULAR INTERVALS AND CLEAN ACCUMULATED DEBRIS FROM THE TOP OF CUTTER DECK, ESPECIALLY AROUND DRIVELINES AND GEARBOXES. THIS WILL HELP PREVENT MATERIAL FROM CATCHING FIRE. 7. Inspect wheel(s) for wear, damage or foreign objects. Repair or replace if necessary. 8. Check tractor tire air pressure. Refer to tractor operator’s manual. 9. Perform BEFORE EACH USE lubrication per paragraph 4-2. 4-1 MAINTENANCE CHECK LIST 10.
40 HOURS 8. Wing Turnbuckles - Apply multi-purpose grease slowly with grease gun. 120 HOURS 9. Wheel Bearings - Apply multi-purpose grease slowly with grease gun until grease relieves around seal. 7. Gearboxes - Add EP80W-90 oil, if necessary, to bring oil level to check plug located on side of housing. Capacity of transfer gearbox is 2.75 quarts (2.6L). Wing and center blade gearbox capacity is 6 quarts (5.7L).
4-3 BLADE REPLACEMENT 4-4 SLIP CLUTCH OPERATIONAL CHECK It is not necessary to remove the complete blade holder assembly to replace the blades.* Blade bolts are accessible through a hole in the top of the cutter deck. Always replace both blades on a spindle using two blades having the same weight. Use only genuine Bush Hog replacement blades. After implement has been stored for 30 days or more, perform the following operational check: A. Lower wings to the work position. Shut down tractor. B.
BUSH HOG ® MODEL 3715 / 3710 FLEX-WING ROTARY CUTTER (Model 3710 Illustrated) 14 1” x 9-7/8”
1” x 8-5/8” 1” x 12-11/16” 1’ x 7-11/16” 1” x 12-11/16” 15
TABLE 4-1 GENERAL TROUBLESHOOTING PROBLEM PROBABLE CAUSE REMEDY Uneven cut Cutter not level side to side or front to rear. Refer to Section II. Worn or bent blades. Replace blades per paragraph 4-3. Stripping or windrowing Possible build up of material under cutter. Clean cutter. Cutter not level. Refer to SECTION II. Worn blades. Replace per paragraph 4-3. Cutter not being operated at rated RPM speed. Set tractor throttle for proper PTO speed during operation.
SECTION V ASSEMBLY CAUTION THE FOLLOWING SAFETY PRECAUTIONS SHOULD BE THOROUGHLY UNDERSTOOD BEFORE ATTEMPTING MACHINE ASSEMBLY. 1. Wear personal protective equipment such as, but not limited to protection for eyes, ears, feet, hands, lungs and head when assembling the equipment. Do not wear loose clothing or jewelry that may catch on equipment moving parts. 2. Do not lift heavy parts or assemblies. Use crane, jack, tackle, fork trucks or other mechanical devices. 3.
Figure 5-2 Axle Cylinder Mounting Holes Figure 5-5 Laminated and 24” Aircraft Tires Automotive and 29” Aircraft Tire Linkage Rod To Slots On Tongue Figure 5-6 Front Of Cutter Linkage Rod Turnbuckle End To Axle B. Pin axles onto wings and center deck using pivot pins and 3/8 x 2” bolts with locknuts. (Pages 14 & 15) Figure 5-3 Wing Axle Assembly Hydraulic Cylinder Transport Latch G. There are two types of hitches available for the Model 3715, a 2” ball hitch or a heavy duty, self-leveling clevis.
H. Connect height adjusting cylinder from cutter deck to axle. Secure the cylinder to the axle using 51/8” pin with roll pin and cotter pin. (Figure 5-5) I. Attach hose holder rod to tongue using 5/8” x 2” bolt, nut, flatwasher and lockwasher. Flatwasher is installed on top and lockwasher on bottom. J. Lift wing using a chain hoist or fork lift and position wing forward of center section with hinges aligned. Install hinge pins through hinges, installing hinge shield between hinges as pins are inserted.
P. Attach driveline retainer ring to the mounting bracket welded to the deck of each wing in front of the gearbox input shaft. Secure with two 1/2” x 1-1/2” bolts, lockwashers and hex nuts. (Figure 5-14) Q. Install hinge plate on wing gearboxes using four 10mm x 25mm bolts, flatwashers and lockwashers per shield. Install shield on hinge plate using 1/8 x 3/4” cotter pins. Lower shield and secure with lynch pin. R. Install wing drivelines, attaching clutches to center transfer gearbox.
IMPORTANT 5-3 SAFETY CHAIN INSTALLATION WARNING FAILURE TO RETIGHTEN NUTS TO ORIGINAL POSITION MAY CAUSE DAMAGE TO IMPLEMENT AND/OR TRACTOR DUE TO IMPROPER SLIP CLUTCH TORQUE SETTING. FOR NON-AGRICULTURAL USE, OSHA, ASAE, SAE AND ANSI STANDARDS REQUIRE THE USE OF CHAIN GUARDS OR OTHER PROTECTIVE GUARDS AT ALL TIMES.
Figure 5-21 Band Installation 5-4 BAND INSTALLATION Figure 5-22 Belting Installation A. Raise wings to the transport position and install transport lock pins. Bands will be installed to underside of deck. B. Align holes on outer wing band with holes in wing skid. Install 3/8” x 1” bolt and nut to support band. (Figure 5-21) C. Align holes on bands with those on wing. Insert carriage bolts through deck and bands. Secure with lockwashers and nuts.
228” Hydraulic Hose 3715 PLUMBING DIAGRAM (USING REMOTE VALVE) 228” Hydraulic Hose 90° Elbow 3/4” SAE “O” Ring Boss to 9/16” JIC Breather Plug Center Height Control Cylinder 23 228” Hydraulic Hose
Breather Plug 24 228” Hydraulic Hose 90° Elbow 3/4” SAE “O” Ring Boss to 9/16” JIC Breather Plug IMPORTANT DURING OPERATION THE HYDRAULIC VALVE WING LEVERS MUST BE LOCKED IN THE FLOAT POSITION TO AVOID DAMAGE TO THE CYLINDERS AND AXLES.
SAFETY DECALS To promote safe operation, Bush Hog supplies safety decals on all products manufactured. Because damage can occur to safety decals either through shipment, use or reconditioning, Bush Hog will, upon request, provide safety decals for any of our products in the field at no charge. Contact your authorized Bush Hog dealer for more information.
78786 50029418 78608 26
TORQUE SPECIFICATIONS Proper toque for American fasteners used on Bush Hog equipment. Recommended Torque in Foot Pounds (Newton Meters).* AMERICAN Bolt Head Markings SAE Grade 2 (No Dashes) SAE Grade 5 (3 Dashes) lt ” Bo r “B te e m Dia Wrench Size “A” SAE Grade 8 (6 Dashes) METRIC WRENCH SIZE (IN.) “A” BOLT DIAMETER (IN.
INSTALLATION OF SPECIAL LOCKING WASHER AND GRADE 5 BOLTS ON THE MODEL 3715 / 3710 AXLE TURNBUCKLE. Refer to the illustrations below for proper locations of each component. • • Tighten locknuts to 644 ft. lbs +/- 50 ft. lbs. After 8 hours of operation retighten to 644 ft. lbs. +/- 50 ft. lbs. NOTE: The Two Piece Locking Washer is shipped glued together to aid in assembly. If they should fall apart during transport, Figure 2 shows the proper relationship of the two halves.
2501 Griffin Ave., l Selma, AL 36703 Telephone (334) 874-2700 l www.bushhog.
