Bush Hog CBH60, CBH80, CBH70 manual Troubleshooting

Models: CBH60 CBH70 CBH80

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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. The rods for CBH70, CBH80 should

 

 

 

 

 

 

 

 

 

 

be torqued to 14 ft/lbs for 5/16” nuts and 33

 

 

 

 

 

 

 

 

 

 

ft/lbs for 3/8” nuts. Never force spool.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ball in anti-cavitation check

 

Clean anti-cavitation valve carefully, being

 

 

 

 

 

 

valve is stuck or not seating

 

sure that checks move freely and seat

 

 

 

 

 

 

properly.

 

properly, or replace cartridge.

 

 

 

Sticky valve spool

 

 

Paint on valve spool; sticking

 

Clean valve spool. Binding is usually

 

 

 

 

spool in

 

 

valve spool or scored valve

 

caused from an overtightened 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. Instead,

 

 

 

 

 

 

 

 

 

 

the plug and fitting should be removed

 

 

 

 

 

 

 

 

 

 

from valve body and be reconnected,

 

 

 

 

 

 

 

 

 

 

using a new O-ring. Do not apply exces-

 

 

 

 

 

 

 

 

 

 

sive pressure on mounting bolts. The rods

 

 

 

 

 

 

 

 

 

 

for CBH70, CBH80 should be torqued to 14

 

 

 

 

 

 

 

 

 

 

ft/lbs for 5/16” nuts and 33 ft/lbs for 3/8”

 

 

 

 

 

 

 

 

 

 

nuts. Never force spool.

 

 

 

 

 

 

Bent spool

 

Replace with new spool section.

 

 

 

 

 

 

 

 

 

 

Foreign particles

 

Clean system and valve.

 

 

 

 

 

 

 

 

 

 

 

 

Misalignment of control handle

 

Check linkage for binding condition

 

 

 

 

 

 

 

 

 

 

 

linkage

 

 

 

 

 

 

 

 

 

 

 

 

 

Unable to push valve

 

 

Paint on valve spool; sticking

 

Clean valve spool. Binding is usually

 

 

 

 

 

 

 

spool in

 

 

valve spool or scored valve

 

caused from an overtightened 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. Instead,

 

 

 

 

 

 

 

 

 

 

the plug and fitting should be removed

 

 

 

 

 

 

 

 

 

 

from valve body and be reconnected,

 

 

 

 

 

 

 

 

 

 

using a new O-ring. Do not apply exces-

 

 

 

 

 

 

 

 

 

 

sive pressure on mounting bolts. The rods

 

 

 

 

 

 

 

 

 

 

for CBH70, CBH80 should be torqued to 14

 

 

 

 

 

 

 

 

 

 

ft/lbs for 5/16” nuts and 33 ft/lbs for 3/8”

 

 

 

 

 

 

 

 

 

 

nuts. Never force spool.

 

 

 

 

 

 

Oil leakage past spool seal into

 

Remove cap. If it contains oil replace spool

 

 

 

 

 

 

 

 

spool cap

 

seal O-rings. Check O-ring retainer to be

 

 

 

 

 

 

 

 

 

 

sure it is flat. If it has been “belled” check

 

 

 

 

 

 

 

 

 

 

for restriction from outlet to reservoir of

 

 

 

 

 

 

 

 

 

 

valve which would cause excessive back

 

 

 

 

 

 

 

 

 

 

pressure. If supply and return lines are

 

 

 

 

 

 

 

 

 

 

reversed, pressure on low pressure / return

 

 

 

 

 

 

 

 

 

 

side of valve will cause problem.

 

 

 

 

 

 

 

 

 

 

Make sure hoses are connected correctly

 

 

 

 

 

 

 

 

 

 

at bulkhead connection on backhoe.

 

 

 

 

 

 

 

23

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 25
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Bush Hog CBH60, CBH80, CBH70 manual Troubleshooting

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.