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Page Title:
HYDRAULIC BRAKE SYSTEM - continued |
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 TM 10-3930-644-14&P
E. HYDRAULIC BRAKE SYSTEM (CONT)
TROUBLE
PROBABLE CAUSE
POSSIBLE SOLUTION
Truck pulls to
Lining charred or drum scored.
Replace lining or repair or replace drum.
one side.
(Continued)
Adjusting cams loose.
Repair.
Brakes spongy.
Air trapped in brake system.
Bleed brake system.
Brake adjustment not correct.
Check and/or replace self-adjuster.
Shoe surface not square with
Repair.
drum.
Excessive pedal
Brake adjustment not correct.
Check and/or replace self-adjuster.
pressure.
Incorrect brake lining.
Install specified lining.
Oil or fluid soaked lining.
Replace lining.
Lining making only partial
Realign brake shoes.
contact.
Light pedal
Brake adjustment not correct.
Check and/or replace self-adjuster.
pressure-
brakes too -
Small amount of grease or brake
Correct cause and replace lining.
severe.
fluid on lining.
Incorrect lining.
Install specified lining.
Brakes squeak.
Brake shoes twisted.
Repair.
Particles of metal or dust im-
Remove foreign material; sand lining to drum.
bedded In lining.
Chamfer at end of lining too
Elongate chamfer.
short.
F. POWER STEERING SYSTEM
TROUBLE
PROBABLE CAUSE
POSSIBLE SOLUTION
Hard steering.
Failure of pump.
Replace or recondition.
Badly worn pump.
Recondition pump.
Broken or weak relief valve
Replace spring.
spring.
Binding relief valve.
Free valve.
Low pump pressure.
Replace worn or faulty parts.
Line leakage.
Tighten connections.
Low oil level.
Fill reservoir to correct level.
Bent linkage.
Replace damaged parts.
Improper wheel alignment.
Align wheels.
2-111
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