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| Brake
will not hold a load with control lever in 'neutral.' |
- Excessive system back pressure acting on the brake release
port.
System back pressure must not exceed 150 psi.
Inspect hydraulic system for a restriction in the return
line from the control valve to the reservoir. Be sure
control valve and plumbing is properly sized for the winch
motor.
Oil analysis may indicate contamination has worn motor
shaft and seal. Thoroughly flush entire hydraulic system
and install new filters and oil. Install new motor seal.
- Friction brake will not hold due to worn or damaged brake
discs.
Disassemble brake to inspect brake discs. Check
stack-up height as described in "Motor Support-Brake Cylinder
Service" section of the service manual.
- Brake clutch is slipping.
Improper planetary gear oil may cause the brake
clutch to slip. Drain old gear oil and flush winch with
solvent. Thoroughly drain solvent and refill winch with
recommended planetary gear oil listed in "Preventive Maintenance"
section of the serivce manual.
Brake clutch may be damaged or worn. Disassemble and inspect
brake clutch as described in "Brake Clutch Service" section
of the service manual.
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