Bush Hog CBH80, CBH60, CBH70 manual Troubleshooting

Page 24

 

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

 

 

 

 

 

 

 

 

 

packings are used in cylinder repair.

 

 

 

 

 

 

 

 

 

Everything must be clean and free of

 

 

 

 

 

 

 

 

 

dirt during the oil line removal and

 

 

 

 

 

 

 

 

 

replacement, and during any cylinder

 

 

 

 

 

 

 

 

 

work.

 

 

 

Load drops or settles

 

Loose oil line connections,

 

Tighten all hose connections and replace

 

 

 

 

 

 

leaks in line or broken lines

 

replace any damaged o-rings at leaking

 

 

 

 

 

 

 

 

 

o-ring fittings. Check and replace any

 

 

 

 

 

 

 

 

 

damaged hoses and lines.

 

 

 

 

 

Oil is bypassing cylinder piston,

 

Replace or rebuild the cylinder; replace

 

 

 

 

 

 

scored piston, worn piston

 

damaged parts.

 

 

 

 

 

packing, or defective piston

 

 

 

 

 

 

 

 

 

 

 

 

 

 

assembly

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Worn or damaged rod seals on

 

Repack cylinder. Rebuild cylinder,

 

 

 

 

 

 

cylinder; external leaks

 

replacing damaged parts as necessary.

 

 

 

 

 

Worn control valve

 

Replace the control valve.

 

 

 

 

 

 

Damaged or worn spool seals

 

Replace spool end seals.

 

 

 

 

 

Leaky cylinders

 

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.

 

 

 

Leaky valve

 

Loose oil line connections,

 

Tighten all hose connections and

 

 

 

 

 

 

leaks in line or broken lines

 

replace any damaged O-rings at

 

 

 

 

 

 

 

 

 

leaking O-ring fittings. Check and

 

 

 

 

 

 

 

 

 

replace any damaged hoses and lines.

 

 

 

 

 

Excessive back pressure

 

Relieve condition. Restriction may be

 

 

 

 

 

 

 

 

 

 

from outlet to reservoir.

 

 

 

 

 

Paint on valve spool; sticking

 

Clean valve spool. Binding is usually

 

 

 

 

 

 

valve spool or scored valve

 

caused from an over tightened plug,

 

 

 

 

 

spool

 

mounting bolt, fitting in valve body or

 

 

 

 

 

 

 

 

 

tie rod bolt. If a plug or fitting in the

 

 

 

 

 

 

 

 

 

valve body is leaking, do not overtighten

 

 

 

 

 

 

 

 

 

in an effort to stop leak. This will distort

 

 

 

 

 

 

 

 

 

body casting and cause spools to bind.

 

 

 

 

 

 

 

 

 

(cont.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

22

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 23 Page 25
Image 24
Page 23 Page 25
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 BackhoesThis Safety Alert Symbol means ATTENTION! Become Alert Your Safety is InvolvedThis s ymbol is used to call attenti on to safety Important Safety Precautions TractorBackhoe Adjustments and Inspection TransportationAvoid HIGH-PRESSURE Fluids Safety Decals EMPLOYERS, Employees and Operations This Act SeeksChild Labor Under 16 Years Old Befor E PO SitionControls 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 BucketMiscellaneous Finishing Straight WallsBackfilling Service Beginning of SeasonBleeding Backhoe Hydraulic System Hydraulic System HosesTooth Replacement Tightening Nuts and BoltsLubrication Install the swing safety l ock pin as shown in Figures 1 Place Blocking Under Backhoe Frame For SupportTroubleshooting Procedures Problem Cause CorrectionStabilizer 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 Assembly CBH 60, CBH 70, CBH Do not cut a ny st rapping that fastensBackhoe mainframe and swing frame t o Skid base at this timeMounting Kits and Optional Kits Assembly General DescriptionMounting Backhoe to Tractor Point Hitch LinkageAssembly Model CBH60 BackhoeAttaching KIT Instructions 11 14 16 28 115 Model CBH70 Backhoe Attaching KIT Instructions General DescriptionPage Model CBH80 Backhoe Attaching KIT Instructions Page PTO Pump & Reservoir KIT Installation General Description CBH70GPM Pump 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 Hydra ulic Ho Ok-Up C BH 80 Fo Tractors With Closed- Center HydraulicSystems Figure Backhoe OperationPower Beyond Kits First ProcedureAssembly of a Bush HOG Backho E to a 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.
Top Page Image Contents