TROUBLE SHOOTING
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PROBLEM
CORRECTIVE ACTION
1. Ramp fails to come up
- Check for proper lubrication of lifting and hold
when release chain is
down assemblies.
- Check for dirt and debris in the pit which may be
hindering proper mechanical action.
- Check for proper positioning of the board in the pit.
- Check to make sure the hold down is not bent.
- Check to be sure lifting arm is on the lifting cam
and not binding on the side.
2. Lip fails to extend.
- Check to see that operator is holding the release
chain ring until ramp reaches its highest position.
- Check for broken chain or chain joiner.
- Check for lubrication of the lip hinge tubes.
- Check for any binding of the board in the pit which
may impede upward movement of the ramp.
- Check the lip assist spring adjustment.
- Check for proper lifting spring adjustments.
3. Lip extends but fails to lock.
- Check the lip latch adjustment.
a) Spring may be disengaged.
b) Spring may have no preload.
c) Wire rope clip may be loose.
- Check to see if the lip extends far enough to
engage latch. See item “b” above.
- Check for violence in the board caused by
excessive lifting spring tension.
- Check to make sure the lip latch is not broken off.
- Check for excessive dirt in the lip hinge tubes.
4. If the lip fails to drop to it’s
- Check the lip latch assembly.
vertical (pendant) position
Lubricate the latch and hinge tubes so that it
when the truck pulls away.
moves freely.
- Check lip hinge tube lubrication.
NOTE
Prior to servicing the dock, always block up and barricade the ramp securely, and then
enter the pit to clean or adjust.
80136 Mechanical Leveler:80136 Mechanical Leveler 11/19/08 10:53 AM Page 16
Perma Tech Inc.
Summary of Contents for MD-610
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