16
This section provides basic troubleshooting information. Determination of specific causes to problems are best identified by thorough
inspections performed by personnel instructed in safety, operation and maintenance of this equipment. The chart below provides a brief
guide to common winch symptoms, probable causes and remedies.
TROUBLESHOOTING
SYMPTOM
CAUSE
REMEDY
Winch will not operate.
No air supply to winch.
Check air supply line connections and hoses.
Winch is overloaded.
Reduce load to within rated capacity.
Emergency Stop Valve engaged.
Reset Emergency Shut-off valve.
Shipping plugs may still be in place.
Remove shipping plugs in valve.
Load continues to move when
winch is stopped.
Brake(s) slipping.
Check brake band adjustment and brake band lining wear.
Disassemble and inspect disc brake.
Winch motor controls sticking.
Check pendant buttons or throttle lever return to normal
(neutral) position when released.
Disassemble, inspect and repair the pilot air control valve.
Winch does not lift load.
Motor may be damaged.
Remove and disassemble motor. Examine all parts and
replace any that are worn or damaged.
Winch is overloaded.
Reduce load to within rated capacity.
Insufficient air supply.
Verify air supply pressure and volume at winch inlet meets
the requirements listed in the "SPECIFICATIONS" section.
Clean air line filter.
Throttle lever (pendant button)
moves but winch does not
operate.
Motor may be damaged.
Disassemble and clean the motor and replace any broken or
damaged parts.
Insufficient air supply.
Ensure the air pressure at the winch inlet is at least 90 psig
(6.3 bar/630 kPa) at rated volume. Clean air line filter.
Emergency Stop Valve engaged.
Reset Emergency Shut-off valve.
Motor runs hot or makes
excessive noise during operation.
Improper lubrication.
Set lubricator to provide a minimum of 6 drops per minute.
Check oil level in lubricator and motor.
Damaged or broken motor internal parts. Disassemble and repair motor.
Winch runs slow.
Improper hose or fitting sizes.
Check fittings, connections and hoses for correct size and
length. Replace parts that may cause restricted air flow.
Inspect air line filter.
Motor may be damaged.
Remove and disassemble motor. Inspect all parts and replace
all worn or damaged parts.
Air lines freeze.
Water in air supply.
Install or drain air system moisture traps, moisture collecting
air receivers and compressor aftercoolers. After corrective
action has been taken, disconnect lines at winch inlet and
purge with clean, dry air or nitrogen.
Automatic Drum Brake:
Brake will not release.
Damaged or leaking cylinder seals.
If air is noticed escaping from the cylinder breather when
attempting to release the brake replace or repair cylinder.
Dirty filter in air supply.
Clean or replace filter.
Automatic Disc Brake
Brake fails to release.
Low air supply pressure.
Ensure supply air pressure at the brake inlet is at least 50
psig (3.4 bar/340 kPa).
Leaking diaphragm.
Disassemble brake and replace diaphragm.
No release pressure at the brake port.
Verify proper operation of winch controls.
Dual Automatic Air Brakes:
Drum brake fails to release.
Pin (630) in shuttle valve stuck.
Remove shuttle valve and inspect, clean or repair as
necessary.
Summary of Contents for force5 FA5A-LAK1
Page 34: ...34 WINCH ASSEMBLY PARTS DRAWING ...
Page 36: ...36 MOTOR ASSEMBLY PARTS DRAWING ...
Page 38: ...38 DISC BRAKE ASSEMBLY PARTS DRAWING ...
Page 40: ...40 DRUM BAND BRAKE ASSEMBLY PARTS DRAWING ...
Page 42: ...42 LEVER OPERATED CONTROL VALVE ASSEMBLY PARTS DRAWING ...
Page 44: ...44 PENDANT OPERATED PILOT CONTROL VALVE ASSEMBLY PARTS DRAWING ...
Page 48: ...48 SHUTTLE VALVE ASSEMBLY PARTS DRAWING ...
Page 50: ...50 EMERGENCY STOP AND OVERLOAD ASSEMBLY PARTS DRAWING ...
Page 52: ...52 OPEN FRAME FACE WINCH ASSEMBLY PARTS DRAWING ...
Page 57: ...57 WINCH LABEL TAG LOCATION AND PART NUMBER REFERENCE DRAWING ...