B. System Operates Erratically
1. Air in system: Check suction side
of system for leaks. Repair, as
necessary.
2. Cold hydraulic fluid: Allow ample
warm-up period.
3. Dirty or damaged components:
Clean and repair as necessary.
4. Restriction in filters or lines: Clean
and/or replace elements or lines.
C. System Operates Slowly
1. Hydraulic fluid viscosity too high:
cold fluid. Allow fluid to warm up
before operating machine.
2. Low pump drive speed: Increase
engine speed (check manual for
recommendations).
3. Low fluid level: Check reservoir
and add fluid as necessary.
4. Air in system: Check suction side
for leaks. Repair, as necessary.
5. Badly worn pump, valves, etc:
Repair or replace as needed.
6. Restriction in filters or lines:
Clean and/or replace elements as
needed.
7. Improper adjustments: Check
relief valves, etc. Adjust per
manual.
16
WINCH TROUBLE SHOOTING
Symptom
Possible Cause(s)
Drum will not rotate at all
1. Brake not unlocking
2. Winch is improperly
mounted
3. Not enough pressure
Drum will not rotate
1. Brake not unlocking
under load
2. Freespool not engaged
3. Damaged drive system
Winch runs too slow
1. Brake is not fully
released
2. Low flow to motor
Wire rope drum
1. Freespool lever not
will not freespool
locked in position
2. Winch is improperly
mounted
Oil leak around motor
1. Loose fitting
2. Damaged shaft seal
in motor
Oil leak around
1. Damaged piston, seal
brake housing
or casting
Load drifts
1. High back pressure
Drum chatters
1. Drive not fully engaged
Corrective Action
1. Check shuttle valve
Check hose for leak
Check port for blockage
Disassemble and
inspect brake
2. Check mount, see
mounting section
in this manual
3. Check pump and relief
valve settings
1. Same as above
2. Engage freespool
3. Teardown and inspect
winch
1. Check pressure,
brake requires 350 PSI
(24 BAR) to unlock
2. Check hydraulic circuit
for leaks and faulty
components
1. Check lever
position
2. Check mount, see
mounting section
in this manual
1. Tighten fitting
2. Replace motor
1. Disassemble brake
and repair
1. Run separate return
1. Check freespool
mechanism for full
engagement and lock
17