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Related Manuals for Bush Hog CBH60
Summary of Contents for Bush Hog CBH60
- Page 1 B B a a c c k k h h o o e e M M o o d d e e l l s s CBH60 / CBH70 / CBH80 O O p p e e r r a a t t o o r r ’ ’ s s M M a a n n u u a a l l ASSEMBLY l l OPERATION l l MAINTENANCE 06/09 Rev.
- Page 2 If your manual should become lost or destroyed, Bush Hog will be glad to provide you with a new copy. Order from Bush Hog, 2501 Griffin Ave., Selma, Alabama 36703.
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Page 3: Table Of Contents
It is the Retail Customer’s responsibility to deliver the product to the authorized Bush Hog dealer from whom he purchased it, for service or replacement of defective parts which are covered by warranty. Repairs to be submit- ted for warranty consideration must be made within forty-five (45) days of failure. -
Page 4: Warranty
2. If the unit has been subjected to misapplication, abuse, misuse, negligence, fire or other accident. 3. If parts not made or supplied by Bush Hog have been used in connection with the unit, if, in the sole judge- ment of Bush Hog such use affects its performance, stability or reliability. -
Page 5: Dealer Preparation Check List
All manuals and user guides at all-guides.com DEALER PREPARATION CHECK LIST CBH60 - CBH70 - CBH80 BACKHOES BEFORE DELIVERING MACHINE - The following check list should be completed. Use the Operator’s Manual as a guide. q Machine properly assembled. q All safety decals readable (See decal page). - Page 6 All manuals and user guides at all-guides.com 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.
- Page 7 All manuals and user guides at all-guides.com 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.
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Page 8: Safety Precautions
All manuals and user guides at all-guides.com 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. -
Page 9: Safety Decals
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. All Models... - Page 10 All manuals and user guides at all-guides.com 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.
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Page 11: General Operation
All manuals and user guides at all-guides.com GENERAL OPERATION Figure 1 CAUTION To avoid possible injury, observe the following safety rules BEFORE Swing Lock Pin OPERATING the backhoe: Location 1. BE SURE area is clear of underground utilities or Bucket other hazards. -
Page 12: Operating The Backhoe
All manuals and user guides at all-guides.com Figure 3a Figure 3 Safety Locks Lock Pins Storage Locations Swing Lock Pin Boom Transport Lock Pin Location In general, the direction of movement of a control SWING LEFT AND RAISE the boom by moving the lever corresponds to the movement of the operating control lever back and to the left. -
Page 13: Transporting The Backhoe
All manuals and user guides at all-guides.com 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 movements will not be equal or even simultaneous, the control console. -
Page 14: Placing The Stabilizers
All manuals and user guides at all-guides.com 4. USE accessory lights and SMV emblem when CAUTION traveling on highways. To avoid possible injury, observe the following safety Before leaving backhoe operator’s seat, position the rules when transporting the backhoe: backhoe for transport by raising boom, crowding dip- 1. -
Page 15: Filling The Bucket
All manuals and user guides at all-guides.com 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. -
Page 16: Backfilling
All manuals and user guides at all-guides.com MISCELLANEOUS General Operations When finishing straight walls or bellholes in sandy soil, use SIDE SLOPE EXCAVATING OR TRENCHING a platform under the rear tires and the stabilizers. The plat- form distributes the load over a larger area and lessens the Dig with the backhoe uphill whenever possible. -
Page 17: Service
All manuals and user guides at all-guides.com SERVICE Hydraulic System Hoses CAUTION To avoid possible injury, observe the following Oil leaks in the pressure side of the system can be safety rules WHEN SERVICING the backhoe: located by carefully inspecting the external area of the hoses and fittings. -
Page 18: Tooth Replacement
Figure 6 frame pivot (*) shown in Figures 8, raise boom and Bolt-On Tooth install transport lock pin shown in Figure 1. On Models CBH60, CBH70, CBH80 the following Bolt Point locations should be oiled with SAE30 oil: A. All Control Handle Linkages B. - Page 19 All manuals and user guides at all-guides.com REMOVAL FROM TRACTOR - STORAGE Figure 9 Backhoe Fully Extended Place Blocking Under Backhoe Frame For Support The backhoe is self-assisting during the installation CAUTION 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 1.
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Page 20: Stabilizer Pads
STABILIZER PADS Figure 10 The backhoe is supplied with flip-over stabilizer feet (Excluding Model CBH60) as standard equipment. They are suitable for most backhoe work and gener- ally are all that is ever required. However, foot pad kits are available as options. These kits bolt to the standard feet and increase the versatility of the back- hoe. - Page 21 Spool not moved to full stroke Check spool travel - should be .16” crowd cylinder, but other either way or a total of .32” for CBH60. cylinders function properly Check spool travel- should be .28” either way, or a total of .56”. for CBH70 and CBH80.
- Page 22 Spool not moved to full stroke Check spool travel - should be .16” either way, or a total of .32” for CBH60. Spool travel should be .28” either way, or a total of .56” for CBH70 CBH80.
- Page 23 Relief pressure will have to be checked control valve too low or defective and corrections made. Backhoe system pressure is 2000 PSI (CBH60), 2250 PSI (CBH70), 2550 PSI (CBH80), Relief valve may need cleaning and overhauling, or entire cartridge must be replaced.
- Page 24 All manuals and user guides at all-guides.com Troubleshooting (Continued) Problem Cause Correction Lift, crowd or bucket Problems involving the control Dirt and shreds of packing material are cylinders drop under load valve (cont.) the usual causes of valve malfunction. when control spools Be sure the reservoir oil supply is kept shifted from neutral clean and only factory supplied packing...
- Page 25 All manuals and user guides at all-guides.com Troubleshooting (Continued) Problem Cause Correction Leaky valve Paint on valve spool; sticking (cont.) valve spool or scored valve spool Instead, the plug and fitting should be removed from valve body and be reconnected, using a new O-ring. Do not apply excessive pressure on mounting bolts.
- Page 26 All manuals and user guides at all-guides.com Troubleshooting (Continued) Problem Cause Correction Unable to push valve Bent spool Replace with new spool section. spool in Foreign particles Clean system and valve. Misalignment of control handle Check linkage for binding condition. linkage Spring centered spools Paint on valve spool;...
- Page 27 All manuals and user guides at all-guides.com MODEL CBH 60 MONOBLOCK 6. Install new seals: VALVE REPAIR - DISASSEMBLY A. Spring-Centered Bonnet Assembly Only: Replacing Spools Seals: Lightly oil new O-ring seal. Slide seal over valve spool and insert weal in counter bore. Replace back- Note: For the purpose of these instructions we will up washer and seal retainer.
- Page 28 All manuals and user guides at all-guides.com MODEL CBH 70, CBH 80 of the end sections on a flat surface. To obtain prop- er alignment of end sections relative to the spool sec- tions apply downward pressure to the end sections; VALVE REPAIR - DISASSEMBLY snug tie rod nuts to about 10 ft.
- Page 29 All manuals and user guides at all-guides.com 11. Lightly oil new O-ring seal. Slide O-ring seal over 8. At the FRONT of the valve remove all parts con- valve spool and insert in seal counter bore. Replace nected to the spool (handle, linkage, etc.). back-up washer, and seal plate retainer.
- Page 30 All manuals and user guides at all-guides.com Figure 13 DIPPERSTICK GUIDE LINK BOOM BUCKET LINK STABILIZER CYLINDER BUCKET STABILIZER MAINFRAME ASSEMBLY - CBH 60, CBH 70, CBH 80 Model CBH 60 3. Remove plastic bag containing bucket pins from backhoe. Attach bucket to dipperstick using one pin, The backhoe has been partially disassembled and bolt, lock nuts, and shims as needed to take up gap strapped to a skid for shipping purposes.
- Page 31 Mounting Backhoe to Tractor free of lifting forces at all times after installation of the attaching kit by keeping tractor quadrant The Bush Hog backhoe can be mounted to the lever in the lowered position. power source using four different attaching kits.
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Page 32: Assembly
All manuals and user guides at all-guides.com Model CBH60 Backhoe 4. Install Seat Assembly from base backhoe to Seat Upper Weldment (23) using hardware pro- vided with base backhoe, consisting of four ATTACHING KIT INSTRUCTIONS 1/2NC x 1-3/4” Carriage Bolts, Lockwashers, and Nuts. - Page 33 All manuals and user guides at all-guides.com Model CBH60 Backhoe ATTACHING KIT INSTRUCTIONS 3-POINT HITCH LINKAGE Figure 14...
- Page 34 All manuals and user guides at all-guides.com MODEL CBH70 BACKHOE ATTACHING KIT INSTRUCTIONS 4. Install Bushing (13) or Bushing (16) in the Upper Bar (20) that most closely matches the diameter of 3-POINT HITCH LINKAGE & HYDRAULIC HOOK-UP the tractor upper link pin. No bushing is necessary TO TRACTOR HYDRAULIC SYSTEMS.
- Page 35 All manuals and user guides at all-guides.com MODEL CBH70 BACKHOE ATTACHING KIT INSTRUCTIONS 3-POINT HITCH LINKAGE Figure 15...
- Page 36 All manuals and user guides at all-guides.com MODEL CBH80 BACKHOE 4. Install Bushing (13) or Bushing (16) in hole of ATTACHING KIT INSTRUCTIONS the Upper Bar (17) that most closely matches the diameter of the tractor upper link pin. No 3-POINT HITCH LINKAGE &...
- Page 37 All manuals and user guides at all-guides.com MODEL CBH80 BACKHOE ATTACHING KIT INSTRUCTIONS 3-POINT HITCH LINKAGE Figure 16...
- Page 38 All manuals and user guides at all-guides.com PTO PUMP & RESERVOIR KIT INSTALLATION General Description CBH70 7. Reinstall Filter Element to the Filter Base. 4.5 GPM Pump 8. Assemble Pump Plate (26) to Pump (11) using two 3/8” NF x 1-3/4” Bolts (1), Lockwashers (8), and The PTO Pump Kit consists of those parts required Nuts (4).
- Page 39 All manuals and user guides at all-guides.com IMPORTANT - When installing the backhoe, do not let the Swing Cylinders interfere with the backhoe pump, or have the hydraulic lines become entangled in any part of the backhoe or tractor. Make sure both Pressure and Suction Lines are free from kinks or twists to reduce back pressure and excessive heat build-up.
- Page 40 All manuals and user guides at all-guides.com General Description CBH 80 may need to be turned 180 degrees to provide prop- 6.1 GPM Pump er engagement with tractor drawbar and have ade- quate clearances. The PTO Pump Kit consists of those parts required 9.
- Page 41 All manuals and user guides at all-guides.com IMPORTANT - When installing the backhoe, do not let the Swing Cylinders interfere with the backhoe pump, or have the hydraulic lines become entangled in any part of the backhoe or tractor. Make sure both Pressure and Suction Lines are free from kinks or twists to reduce back pressure and excessive heat build-up.
- Page 42 All manuals and user guides at all-guides.com 1. OPEN-CENTER SYSTEM WITH LOADER VALVE port of the tractor remote couplers or directly to the OR OTHER ACCESSORY VALVE CONNECTED TO tractor valve. The return hose (B) should be con- THE TRACTOR HYDRAULIC SYSTEM nected from the tank (return) port on the backhoe to a port on the reservoir, as shown in Figure 19.
- Page 43 All manuals and user guides at all-guides.com Hydraulic Hook-Up (CBH 80) For exceed 2800 PSI. Tractors With Closed-Center Hydraulic 3. A closed-center plug in the backhoe control valve Systems (Figure 21) to make it a non-circulating or a demand type sys- tem.
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Page 44: Power Beyond Kit
Bush Hog backhoe and a competitive the Bush Hog loader in past years. The fittings loader or a non Bush Hog valve. The second is also requires to convert the Bush Hog loader valve to a used to operate the backhoe and loader off the power beyond application are included in the loader backhoe PTO pump kit option. - Page 45 All manuals and user guides at all-guides.com BUSH HOG BACKHOE & BUSH HOG LOADER VALVE Figure 22 NOTE: Large loader valve (Walvoil) shown. Small loader valve porting is different. Refer to loader opera- tor’s manual for different valves. Outlet Inlet...
- Page 46 ASSEMBLY OF A BUSH HOG BACKHOE not a Bush Hog loader valve. When connecting the Bush Hog backhoe valve to a valve other than one TO A NON BUSH HOG LOADER VALVE - obtained from Bush Hog, the input pressure line...
- Page 47 All manuals and user guides at all-guides.com Power Beyond – Model CBH60 - FIGURE 24 1. Remove the cover that encloses the backhoe valve within the control console. 2. Disconnect Return Hose from 90 degree Adapter Union located on right hand side of control valve.
- Page 48 All manuals and user guides at all-guides.com Power Beyond – Model CBH70 & CBH80 - FIGURE 25 1. Remove Plug from underside of Right Hand Valve End Cover. 2. Install “Shut Off” Plug into the port opening. Torque Plug to 32 ft-lbs. 3.
- Page 49 All manuals and user guides at all-guides.com MECHANICAL THUMB INSTRUCTIONS - FIGURE 26 Thumb Operation The Mechanical Thumb is used for picking up objects and securing them between the thumb and the bucket. Large objects which can include rocks and logs when grasped, will increase momentum of backhoe as it is swung side to side.
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Page 50: Mechanical Thumb
All manuals and user guides at all-guides.com FIGURE 26 MECHANICAL THUMB ASSEMBLED... -
Page 51: Removing From Shipping Pallet
All manuals and user guides at all-guides.com REPOSITION STABILIZER CYLINDERS BEFORE REMOVING BACKHOE FROM SHIPPING PALLET Cylinder ports must be pointing upward and hoses routed above the cylinder to main- frame pivot pin connection. Backhoe is shipped palletized from factory. Remove stabilizers and fasteners from pallet. Position stabilizer between mounting lugs and pin into place. - Page 52 All manuals and user guides at all-guides.com BACKHOES - DIMENSIONS AND SPECIFICATIONS CBH60 CBH70 CBH80 SERIES 6-1/4 Foot 7-1/4 Foot 8-1/4 Foot Maximum Digging Depth 76” 87.5” 99.5” A. Digging Depth (two foot flat bottom) 74.5” 86.5” 98.5” B. Swing Arc 150°...
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Page 53: Torque Specifications
All manuals and user guides at all-guides.com TORQUE SPECIFICATIONS Proper toque for American fasteners used on Bush Hog equipment. AMERICAN Recommended Torque in Foot Pounds (Newton Meters).* Bolt Head Markings BOLT DIAMETER WRENCH (IN.) “B” AND SIZE (IN.) “A” THREAD SIZE... - Page 54 All manuals and user guides at all-guides.com...
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- Page 56 All manuals and user guides at all-guides.com 2501 Griffin Ave. Selma, AL 36703 Telephone (334) 874-2700 www.bushhog.com...