Bush Hog CBH80 Operator's Manual download pdf (Page 20)

STABILIZER PADS

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. See Figure 10.

Hydraulic Trouble Shooting

The trouble shooting material presented in this sec-

tion is offered as a guide to diagnosing probable

causes and remedies for general operational prob-

lems. Match your problem with the typical problem

examples given, and note the possible cause and the

proper corrective action.

NOTE: When using the following chart, if it is decided

that an overhaul of components or pressure adjust-

ments are necessary to correct malfunctioning, it is

recommended that your dealer make these repairs.

He is equipped to do this work.

Figure 10

WARNING

Escaping hydraulic / diesel fluid under pressure

can penetrate the skin causing serious injury.

Do not use your hand to check for leaks. Use a

piece of cardboard or wood to check for leaks.

Stop engine and relieve pressure before connect-

ing or disconnecting lines.

If any liquid is injected into the skin, obtain med-

ical attention immediately or gangrene may

result.

TROUBLESHOOTING PROCEDURES

Problem Cause Correction

Machine fails to operate

when started initially

Low oil supply in reservoir Fill to proper level.

No oil supply to machine Oil is not being diverted from the

prime mover hydraulic system.

Be sure that the proper controls are

actuated on the prime mover.

Pump not running Check pump drive to be sure it is

engaged.

Improper hose connection IMPORTANT: Be sure inlet and return

hoses are hooked up correctly.

Improper hook-up will result in

damage to the backhoe valve.

Excessive back pressure Relieve condition. Restriction may be

from outlet to reservoir.

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 (CBH 80).

Relief valve may need cleaning and or

overhauling or entire cartridge must be

replaced.

Machine loses power after Low oil supply in Fill to proper level.

operating satisfactorily reservoir

initially

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.

Oil is bypassing cylinder piston, Replace or rebuild the cylinder; replace

scored piston, worn piston damaged parts.

packing, or defective piston

assembly

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Bush Hog CBH80 Operator's Manual Page 20

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