Vestil WTJ - Manual (Page 20)

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• Warning: Care should be taken to identify all potential hazards and comply with applicable safety procedures
before beginning work. Correct any found problems before using the lifting jib.
• Warning: Remove any load from the winch cable before beginning any inspections or work on the unit.
• Only qualified individuals trained to understand mechanical devices and their associated electrical and
hydraulic circuits should attempt troubleshooting and repair of this equipment.
• Warning: Do not use the lifting jib if physical damage is observed to any part of the mast or jib arm.
(A) Before each use inspect for the following:
1.) Evidence of fraying or damage to winch wiring.
2.) The presence of the grounding prong on the winch’s power cord.
3.) Damage or structural deformation to the jib’s structural members, pulleys, hook, winch, or the area of the jib’s
mounting surface on the vehicle.
4.) Fraying, cuts, corrosion, deformation, or damage to the winch cable.
5.) Proper operation of the load hook’s safety latch.
6.) Unusual noise or binding, or evidence thereof.
(B) Inspect monthly for:
1.) Worn or damaged electrical wires.
2.) Pivot point wear, difficulty turning the jib pole.
3.) Integrity of the retaining hardware on all pins and the base.
4.) The integrity of the vehicle bed onto which the lifting jib is mounted, particularly around the jib’s base.
5.) Looseness, wear, or damage to the winch cable pulleys.
6.) Deformation or fatigue of any structural members, and cracks in weldments.
7.) Unusual noises or movement during operation.
8.) All the information, safety, and warning labels being in place and in good condition.
(C) Bi-annually, test the lifting jib at 125% of its rated capacity. After the test, no evidence of deformation, cracking,
fatigue, or other damage should be seen on the load hook assembly, the pulleys, the lifting jib, or the vehicle
surface to which it is mounted. Observe for stretching, fraying or “birdnesting” of the lifting cable.
If any damage is
evident, remove the lifting jib from service immediately and make any repairs necessary.
Note: The unit must be retested at 125% of its rated capacity after any repairs or modifications are made to either the
lifting jib or its mounting.
TROUBLESHOOTING GUIDE
Warning: Before performing any task, always remove any load and disconnect the power supply.
Consult the factory for problems at time of installation, or for any problems not addressed below.
Problem: Possible cause(s): Action:
ROUTINE MAINTENANCE & SAFETY CHECKS
Winch doesn’t run when button No supply voltage. Test with meter. Check for any open
is pushed. protective devices. If circuit protection
has opened, test all parts of circuit with
a multimeter to determine the cause.
Verify that the power supply cord and/or
control cord is connected.
Test with a multimeter.
Bad connection in control circuit. Test with volt meter. Charge battery if
Battery voltage low (DC units). low. (12.65V full charge)
Jumpy load cable operation. Poor spooling of the cable on the Spool out and inspect the cable for
winch reel. kinks, etc. Replace if bad. Respool the
Kink in the cable. cable cleanly onto the winch reel.
Winch motor hums but does not turn. Overload condition. Reduce the load. Verify that the cable is
not binding.
Supply voltage low. Check with meter. Charge battery (DC)
or supply with a large extension cord
(AC).
Jib pole does not want to rotate. Rotation locking bolt is tightened. Loosen the bolt.
Bearing disk under inner jib pole Pull the jib mast apart and inspect.
section is worn excessively. Replace if necessary.
Personnel receive an electrical shock Operating the winch in wet Allow the winch to dry completely
when touching the jib or the vehicle conditions. before use.
when the winch is operated. Winch wiring problem. Have the winch circuit checked by
an electrician, including the grounding
circuit.
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