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®
BUSH HOG
BACKHOES
Operator’s Manual
MODELS 665H / 765H / 865H / 965H
ASSEMBLY • OPERATION • MAINTENANCE
$4.00
801 50034063
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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. Orde
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BACKHOES Operator’s Manual TABLE OF CONTENTS SECTION/PARA PAGE SECTION/PARA PAGE Beginning of Season .................................14 Warranty ..................................................... 2 Hydraulic System ......................................14 Dealer Preparation Check List ................... 3 Safety Procedures ...................................... 4 Lubrication ................................................ 15 Safety Decals ..............................................6 Rem
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® BUSH HOG LIMITED WARRANTY 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. The obligation of Bush Hog to the purchaser under this warranty is limited to the repair or replace- ment of defective parts. Replacement
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DEALER PREPARATION CHECK LIST 665H - 765H - 865H - 965H BACKHOES BEFORE DELIVERING MACHINE - The following check list should be completed. Use the Operator’s Manual as a guide. ❑ Machine properly assembled. ❑ All safety decals readable (See decal page). ❑ All bolts tightened to torque specifications given in the torque chart. ❑ Machine operates properly. ❑ Operators manual has been delivered to owner and he has been instructed on the safe and proper use of the backhoe. Dealer’s Signature CAUTIO
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IMPORTANT SAFETY PRECAUTIONS This symbol is used to call attention to safe- ty 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. In addition to the design and configuration of equipment, hazard control and accident prevention are dependent upon the awareness, concern, prudence and proper training of per
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SAFETY PRECAUTIONS CONTINUED 12. DO NOT dig under stabilizers or tractor backhoe. Soft ground or sandy soil can cause cave-ins. 13. KEEP BUCKET away from the stabilizer area to avoid possible stabilizer damage. 14. ALWAYS swing bucket uphill to dump when on a hillside and keep loaded bucket low. 15. SET BRAKES and block wheels when operating on hills and banks to avoid dangerous runaway. 16. WATCH for overhead wires. DO NOT touch wires with any part of the backhoe. 17. NEVER allow a person to wo
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SAFETY DECALS The safety of the operator was a prime consideration in the design of the backhoe. Proper shielding, conve- nient controls, simple adjustments and other safety features have been built into this implement. The following decals are located on the backhoe. Keep decals clean and replace them immediately if they are missing. Contact your dealer or Bush Hog for replacements. Location: Right Side Of Control Tower Location: Left Side Toe Shield Area Location: Left Side of Control Tower L
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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: “...to assure so far as possible every working man and woman in the nation safe and health
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GENERAL OPERATION Figure 1 Dipper-Stick Safety Swing CAUTION Lock Position To avoid the possible injury, observe the follow- Bucket ing safety rules BEFORE Link OPERATING the backhoe: 1. BE SURE area is clear of underground utilities or other hazards. Boom 2. POSITION barricade around work area. 3. PROVIDE adequate front end weight to counter-balance tractor at Boom Safety all times. 20% of the total Lock Position tractor, loader and back- hoe weight must be on the tractor front axle. Mainframe
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Figure 3 Safety Locks Swing Safety Lock Boom Safety Lock SWING RIGHT AND LOWER the boom by moving ations from the two levers, keeping cycle time to a the lever forward and to the right. minimum. SWING RIGHT AND RAISE the boom by moving the In general, the direction of movement of a control lever back and to the right. lever corresponds to the movement of the operating member. 2. Left Hand Stabilizer: Push lever forward, the LH stabilizer lowers. Pull lever back, the LH stabilizer Operating the B
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Location: Back Of Control Panel It is not difficult to become an efficient operator. This dual operation of controls will speed and simplify the digging operation. Normally the two or more Control lever operating decal is located on back of the movements will not be equal or even simultaneous, control panel. Study this decal. It will assist you in but as the pressure within the cylinders changes, and becoming familiar with the controls. the resistance on an operating member of the hoe lessens, i
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4. USE accessory lights and SMV emblem when trav- CAUTION eling on highways. To avoid possible injury, observe the following safety rules when transporting the backhoe: Before leaving backhoe operator’s seat, position the backhoe for transport by raising boom, crowding dip- 1. ALWAYS engage safety locks as shown on Figs. 1 perstick in, swinging to center and raising the stabiliz- and 3 when transporting backhoe. ers. 2. TRAVEL SLOWLY over rough terrain, on hillsides, When transporting for long d
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General Operations As the pile is approached, dump the bucket. When the bucket is empty, the dipperstick and bucket are in position FILLING THE BUCKET to resume digging upon return to the trench. Control the bucket attitude throughout the digging cycle to IMPORTANT: Avoid constant jarring or hammering-type keep teeth at the proper angle for best penetration. This will contact between the spoil pile and the loaded bucket, as this minimize dragging and scraping the bucket through the may cause pre
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General Operations MISCELLANEOUS When finishing straight walls or bellholes in sandy soil, use a platform under the rear tires and the stabilizers. The plat- SIDE SLOPE EXCAVATING OR TRENCHING form distributes the load over a larger area and lessons the Dig with the backhoe uphill whenever possible. possibility of a cave-in. The platform also tends to keep the unit from creeping rearward if hard digging is encountered. FINISHING STRAIGHT WALLS Level the backhoe on slopes with the stabilizers to
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SERVICE CAUTION placing the unit under full load. To avoid possible injury, observe the following safety rules WHEN SERVICING the backhoe: Bleeding Backhoe Hydraulic System If the hydraulic hoses have been disconnected from 1. ENGAGE safety locks as shown in Figures 1 & 3 the backhoe or tractor, all trapped air must be before servicing the backhoe. removed after the hoses are connected. Start tractor engine and operate backhoe through all movements 2. DO NOT oil, grease or adjust the backhoe whi
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Tooth Replacement The bucket tooth points are self-sharpening and will require little attention; however, these points on the bucket shanks can be replaced when they become badly worn or broken. If a tooth shank breaks off, becomes damaged or lost so that it cannot hold a tooth point, a new shank should be welded to the bucket in its place. Weld-On tooth points can be removed from the * welded tooth shank by hammering at “A” (Figure 5) on the tooth point or by driving a c
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REMOVAL FROM TRACTOR - STORAGE Figure 9 Backhoe Shown Partially Extended Backhoe Fully Extended Blocking For Support CAUTION The backhoe is self-assisting during the installation and removal procedures. For removal and storage, Make sure tractor PTO is disengaged and engine follow these steps: shut off before disconnecting pump or hydraulic lines. 1. Install the swing safety lock pin as shown in a. On PTO pump self-contained systems the pump Figures 1 and 3. should be removed from the PTO shaft
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Problems and Possible Causes, Continued Stabilizer Pads - 765H, 865H and 965H D. Loss of power in any one cylinder including lift The backhoe is supplied with flip-over stabilizer pads and crowd - 8, 9, 10, 11, 12, 13, 23, 25, 26 as standard equipment. They are suitable for most E. Loss of power in swing cylinders, but other cylin- backhoe work and generally are all that is ever required. However, street pad kits are available as ders functioning properly - 8, 9, 10, 11, 12, 13, 23, options for
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27. Check poppet in the control valve not holding - Causes and Corrections, Continued clean check poppet(s) carefully, being sure that it 12. Bent piston rod in cylinder - replace or rebuild moves freely with good spring action and seats the cylinder; replace damaged parts. properly or replace. See item 30 at the end. 13.Worn or damaged rod seals on cylinder; external leaks - repack cylinder. Rebuild cylinder, 28. Damaged or worn spool seals - replace spool replacing damaged parts as necessary
