Mechanical Dock Leveler – M and FMC Group 14, Section 12, Page 1
Issue Date: 10/01/01, Rev. 0 (Part #038-550E)
TROUBLESHOOTING
DO NOT attempt to make repairs or adjustments yourself, only
Trained and Authorized Personnel should perform repairs or
adjustments.
Contact your local Blue Giant Distributor for assistance.
PROBLEM PROBABLE CAUSE
DECK DOES NOT RAISE
1. Hold down mechanism not releasing.
- Release chain, handle or locking roller jammed or
broken.
2. Foreign material lodged between side of deck and pit
wall.
3. Damaged or missing bumpers allowing truck to contact
and hold lip.
4. Lifting arm cam roller knocked off cam and jammed.
DECK DOES NOT
RAISE FAST ENOUGH
TO SWING LIP UP TO
FULLY EXTENDED
POSITION
1. Foreign material lodged in lip hinge, preventing full
rotation.
2. Deck drag on side of pit, slowing deck.
- Foreign material lodged between side of deck and
pit wall.
- Safety skirt damaged and dragging on pit wall
(when used).
- Out of square pit causing deck to drag on side of pit.
3. Lifting arm cam roller has groove worn in by cam.
4. Lack of lubrication on lip hinge spools.
5. Lifting springs require adjustment.
- Assure all other possible causes have been
eliminated before changing spring adjustment.
LIP DOES NOT LOCK
AFTER REACHING
THE FULLY
EXTENDED POSITION
1. Lip lock not engaging.
- Broken or stretched lip-lock spring.
- Lip lock seized - not rotating into lock position.
2. Lip actuator bend or broken.
3. Foreign material lodged in lip lock mechanism.
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