Bush Hog CBH60, CBH80, CBH70 manual Troubleshooting

Page 22

 

 

Troubleshooting (Continued)

 

 

 

 

 

 

 

 

Problem

Cause

Correction

 

 

 

 

 

 

Loss of power in any one

Scored piston rods and worn

Replace or rebuild the cylinder; replace

 

 

 

 

 

 

cylinder, including lift

guides in cylinder

damaged parts.

 

 

and crowd (cont.)

 

 

 

 

 

 

 

 

Bent piston rod in cylinder

Replace or rebuild the cylinder; replace

 

 

 

 

 

 

damaged parts.

 

 

 

Worn or damaged rod seals on

Repack cylinder. Rebuild cylinder,

 

 

 

 

 

 

 

cylinder; external leaks

replacing damaged parts as necessary.

 

 

 

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.

 

 

 

 

 

 

 

 

 

 

 

 

Overload relief valve in the control

Clean relief carefully but do not disturb

 

 

 

valve stuck open or malfunctioning

its pressure setting as it cannot be field

 

 

 

 

 

 

calibrated, or replace cartridge.

 

 

 

Worn control valve

Replace the control valve.

 

 

 

 

Loss of power in swing

Loose oil line connections,

Tighten all hose connections and

 

 

 

cylinders, but other

leaks in line or broken lines

replace any damaged O-rings at

 

 

cylinders functioning

 

 

 

leaking O-ring fittings. Check and

 

 

properly.

 

 

 

replace any damaged hoses and lines.

 

 

 

Restrictions in oil lines

Check and replace any damaged hoses

 

 

 

 

 

 

 

 

and lines. Check for pinched hoses.

 

 

 

Oil is bypassing cylinder piston,

Replace or rebuild the cylinder; replace

 

 

 

 

 

scored piston, worn piston

damaged parts.

 

 

 

packing, or defective piston

 

 

 

 

 

 

 

 

 

assembly

 

 

 

 

 

 

 

 

 

Scored piston rods and worn

Replace or rebuild the cylinder; replace

 

 

 

 

 

guides in cylinder

damaged parts.

 

 

 

Bent piston rod in cylinder

Replace or rebuild the cylinder; replace

 

 

 

 

 

 

 

 

damaged parts.

 

 

 

Worn or damaged rod seals on

Repack cylinder. Rebuild cylinder,

 

 

 

 

 

 

 

cylinder; external leaks

replacing damaged parts as necessary.

 

 

 

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.

 

 

 

 

 

 

 

 

 

 

Relief valve setting in backhoe

Relief pressure will have to be checked

 

 

 

control valve too low or

and corrections made. Backhoe

 

 

 

defective

system pressure is 2000 PSI (CBH60),

 

 

 

 

 

 

2250 PSI (CBH70), 2550 PSI (CBH80),

 

 

 

 

 

 

Relief valve may need cleaning and or

 

 

 

 

 

 

overhauling or entire cartridge must be

 

 

 

 

 

 

replaced.

 

 

 

Worn control valve

Replace the control valve.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 21 Page 23
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Page 21 Page 23
Contents CBH60 / CBH70/ CBH80 06/09 Rev $4.00 50065802Congratulations Table of Contents Retail CUSTOMER’S Responsibility Under the Bush HOG WarrantyThis Limited Warranty Shall not Apply Disclaimer of Implied Warranties & Consequential DamagesDealer Preparation Check List CBH60 CBH70 CBH80 BackhoesYour Safety is Involved This Safety Alert Symbol means ATTENTION! Become AlertThis s ymbol is used to call attenti on to safety Tractor Important Safety PrecautionsBackhoe Transportation Adjustments and InspectionAvoid HIGH-PRESSURE Fluids Safety Decals This Act Seeks EMPLOYERS, Employees and OperationsChild Labor Under 16 Years Old PO Sition Befor EControls Lock Pins Storage Locations Operating the Backhoe ! CautionPage Bucket should be lowere d to b ed when possible Block and secure tractor onlyFilling the Bucket Dumping the BucketFinishing Straight Walls MiscellaneousBackfilling Bleeding Backhoe Hydraulic System ServiceBeginning of Season Hydraulic System HosesTightening Nuts and Bolts Tooth ReplacementLubrication Install the swing safety l ock pin as shown in Figures 1 Place Blocking Under Backhoe Frame For SupportProblem Cause Correction Troubleshooting ProceduresStabilizer Pads Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Model CBH 60 Monoblock Valve Repair Disassembly Model CBHModel CBH 70, CBH Valve Repair Disassembly Model CBH 70, CBH 80 Valve Backhoe mainframe and swing frame t o Assembly CBH 60, CBH 70, CBHDo not cut a ny st rapping that fastens Skid base at this timeMounting Backhoe to Tractor Mounting Kits and Optional Kits AssemblyGeneral Description Point Hitch LinkageModel CBH60 Backhoe AssemblyAttaching KIT Instructions 11 14 16 28 115 Model CBH70 Backhoe Attaching KIT Instructions General DescriptionPage Model CBH80 Backhoe Attaching KIT Instructions Page GPM Pump PTO Pump & Reservoir KIT InstallationGeneral Description CBH70 Do not Remove the Tractor PTO ShieldCBH GPM Pump Installation General Description CBH 80 6.1 GPM Pump CBH Closed Center System CBH 60 & CBH70 Systems Figure Hydra ulic Ho Ok-Up C BH 80 FoTractors With Closed- Center Hydraulic Backhoe OperationAssembly of a Bush HOG Backho E to a Power Beyond KitsFirst Procedure Bush HOG Loader ValveBush HOG Backhoe & Bush HOG Loader Valve Following instructions are to be used to connect Power Beyond Model CBH60 Figure Power Beyond Model CBH70 & CBH80 Figure Installing Thumb to Backhoe Thumb OperationMechanical Thumb Assembled Page Series CBH60 CBH70 CBH80 Torque Specifications SAE Grade 2 No DashesPage Page Griffin Ave. Selma, AL

CBH60, CBH70, CBH80 specifications

The Bush Hog CBH Series is a prominent lineup of compact, high-performance hydraulic blade mowers ideal for maintaining fields, pastures, and overgrown areas. Comprising models CBH80, CBH70, and CBH60, this series is specifically designed for efficiency and durability, making it suitable for various applications, from agricultural uses to residential properties.

One of the standout features of the CBH Series is its robust construction. Each model is built with a heavy-duty frame designed to withstand the rigors of demanding tasks. The decks are made from high-quality steel, offering enhanced durability while maintaining a lightweight design to optimize performance. With reinforced edges and an innovative design, these mowers guarantee longevity and resistance to wear in challenging environments.

The CBH Series integrates advanced hydraulic systems that ensure smooth operation and maneuverability. The hydraulic drive provides excellent power transmission, allowing users to tackle even the most stubborn vegetation with ease. Each model features adjustable cutting height settings, which give users the flexibility to achieve the desired finish. This adaptability is essential for different terrains and types of foliage.

Another key characteristic of the CBH models is their user-friendly design. The intuitive controls allow for easy operation, making it accessible even for those who may not have extensive experience with machinery. The cutting decks feature a quick-release mechanism, streamlining maintenance and facilitating blade changes when necessary.

The CBH80, CBH70, and CBH60 differ mainly in their width and cutting capabilities. The CBH80 boasts an impressive cutting width of 80 inches, making it ideal for large open fields, while the CBH70 offers a 70-inch cutting width, perfectly balancing efficiency and maneuverability. The CBH60, with a width of 60 inches, is designed for tighter spaces, allowing for easy navigation around trees, fences, and other obstacles.

Safety is paramount in the design of the CBH Series. Each model incorporates features such as safety guards and shields to protect users from debris during operation. Furthermore, the mowers are equipped with a quick-stop system that halts blade rotation almost instantly when the operator releases control, enhancing overall safety.

In conclusion, the Bush Hog CBH Series, with its models CBH80, CBH70, and CBH60, embodies a harmonious blend of power, durability, and user-centric design. Equipped with innovative technologies and safety features, these mowers are well-suited for various operational needs, proving to be invaluable tools for anyone looking to maintain their land effectively. Whether you have extensive acres to manage or a smaller yard, the CBH Series offers the versatility and performance to meet your mowing requirements.
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