12
Trouble Shooting Continued
TROUBLE B:
CONSIDERABLE REDUCTION IN LINE SPEED.
PROBABLE CAUSE
REMEDY
1. Same as A-2.
Same as remedy for A-2.
2. Same as A-4.
Same as remedy for A-4.
3. Same as A-6.
Same as remedy for A-5 and B-4.
4. If this trouble has increased gradually, the hydraulic
pump or drive motor may be worn.
Remove and inspect pump. If satisfactory, consult the
disassembly instructions for the drive and remove and
inspect the motor according to the service instructions
for the hydraulic motor.
TROUBLE C:
BRAKE WILL NOT HOLD WHEN CONTROL VALVE IS RETURNED TO NEUTRAL
AFTER LIFTING A LOAD.
PROBABLE CAUSE
REMEDY
1. Excessive system back pressure acting on the brake
release port.
Install a pressure gauge at the “pay-out” port of the
hydraulic motor. Operate the pump at full throttle and
monitor pressure in “neutral” and haul-in positions. If the
pressure is greater than 50 PSI, check for restrictions
in the return line from the winch to the control valve and
the control valve to the reservoir.
TROUBLE D:
THE CAPSTAN WILL NOT LOWER THE LOAD OR
NOT LOWER THE LOAD SMOOTHLY.
PROBABLE CAUSE
REMEDY
1. The friction brake may not be releasing as a result
of a defective brake cylinder seal.
NOTE:
If the brake cylinder seal is defective you
will usually notice oil leaking from the drive vent
plug.
Disassemble and inspect the brake cylinder seal.
3. Same as B-4.
Same as remedy for B-4.
3. Same as A-3.
Same as remedy for A-3.
4. Same as A-5.
Same as remedy for A-5.
2. Friction brake will not hold due to worn or dam-
aged brake disks.
Disassemble drive to inspect/replace worn parts.
2. Friction brake will not release as a result of
damaged brake disks.
Disassemble brake to inspect brake disks.
