WARNING
AIRBAG DOCK LEVELER WITH CONTROLS—OWNER’S MANUAL
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ISSUE DATE: FEBRUARY 1, 2016 REV.2 (PART # 038-880E)
13.0 DOCK LEVELER TROUBLESHOOTING
Do not attempt to install, make repairs or adjustments. Only a trained and authorized service technician should perform the installation
process. Contact your local dealer or distributor for assistance.
PROBLEM
PROBLEM CAUSE
Deck will not raise.
1. The blower motor may have failed or been mis-wired. Repair or replace as necessary.
In the case of potential miswiring, please consult wiring diagram shipped with unit.
2. The control station is not functioning properly. Replace if necessary.
3. Overload relay (optional) may have been tripped. If applicable, investigate and reset.
4. Air bag may have been damaged. Inspect and repair if required.
5. Main power feed may be disconnected or a fuse may have blown.
Reconnect power and inspect fuses.
6. Blower intake may be blocked. Check and clean if necessary.
Deck will not lower.
1. Debris may have accumulated under the platform. Remove and clean around the pit area.
2. Maintenance stand may still be engaged. Investigate and disengage.
3. Blower intake may be blocked. Check and clean if necessary.
Deck raises slowly.
1. Air bag may be damaged. Inspect and repair as required.
2. Cargo and other weight sources may be sitting on the deck. Check and remove if
necessary.
3. Blower intake may be blocked. Check and clean if necessary.
4. Blower uncoupled from bag. Check and call for service.
5. Inadequate voltage. Check line voltage.
The lip will not extend.
1. Debris may be in the lip hinge. Check the hinge and clean away any dirt or corrosion.
2. Lip deployment mechanism may be damaged. Check and replace if necessary.
3. Damaged air bag.
4. Blower uncoupled from bag. Check and call for service.
5. Incorrect voltage. Check line voltage relative to blower motor voltage.
The lip remains in the
extended position.
1. Lip may be bent or damaged. Apply lubrication, and if necessary replace the lip.
2. The lip deployment mechanism may be damaged. Conduct any necessary repairs and
replace parts as needed.
3. Debris may have collected in the lip hinge. Clean and lubricate.
The lip strikes the rear of
the truck as the deck raises,
stops, or slows down, and lip
does not extend in the locked
position.
1. Damaged or missing dock bumpers allow the truck to park too close to the leveler.
2. Height difference between the dock and truck bed may be greater than recommended
3. The lip actuator assembly may be damaged, causing lip to begin extending too early in
the cycle. Adjust as necessary.
4. The lip actuator requires adjustment.
