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
Drum will not rotate at all
1. Brake not unlocking
1. Check shuttle valve
Check hose for leak
Check port for blockage
Disassemble and
inspect brake
2. Winch is improperly
2. Check mount, see
mounted
mounting section
in this manual
3. Not enough pressure
3. Check pump and relief
valve settings
Drum will not rotate
1. Brake not unlocking
1. Same as above
under load
2. Freespool not engaged
2. Engage freespool
3. Damaged drive system
3. Teardown and inspect
winch
Winch runs too slow
1. Brake is not fully
1. Check pressure,
released
brake requires 350 PSI
(24 BAR) to unlock
2. Low flow to motor
2. Check hydraulic circuit
for leaks and faulty
components
Wire rope drum
1. Freespool lever not
1. Check lever
will not freespool
locked in position
position
2. Winch is improperly
2. Check mount, see
mounted
mounting section
in this manual
Oil leak around motor
1. Loose fitting
1. Tighten fitting
2. Damaged shaft seal
2. Replace motor
in motor
Oil leak around
1. Damaged piston, seal
1. Disassemble brake
brake housing
or casting
and repair
Load drifts
1. High back pressure
1. Run separate return
Drum chatters
1. Drive not fully engaged
1. Check freespool
mechanism for full
engagement and lock
17
Symptom
Possible Cause(s)
Corrective Action