TM 1-1500-204-23-2
Table 4-42. Troubleshooting Rotor Brakes Systems
Trouble
Probable Cause
Remedy
Brake does not hold
Brake cylinders improperly
Adjust cylinders
adjusted.
Leakage in lines
Repair or replace as necessary
Defective accumulator.
Check air pressure, replace
accumulator If necessary.
Accumulator air pressure
Service accumulator and bleed air
escaping into brake lines (brake
out of brake lines.
off over a prolonged period)
Internal or external leakage in
Replace master cylinder
master cylinder
Low oil level In utility reservoir.
Service reservoir.
Brake does not release (lining
Improper internal adjustment
Replace brake cylinder.
drags on disc).
of brake cylinder
Brake disc warped
Replace disc
Clutch pump operates with
Defective rotor brake limit
Check prime power source and con-
rotor brake on.
switch.
tinuity; replace switch If necessary.
Open circuit breaker
Reset circuit breaker.
Defective clutch control relay
Replace relay
Spongy brake.
Air in lines
Bleed air at master cylinder and/or
brake cylinders.
Brake cylinders Improperly
Adjust brake cylinders
adjusted.
Master cylinder handle does not
Defective latch.
Replace master cylinder.
lock in parked position (when not
made inoperative by latch)
Master cylinder handle does not
Defective latch.
Replace handle.
release
4-156
