Jet JG-150A, Operating Instructions Manual

Page: 7 / 16

7
Before storing the grip puller:
5. After use, remove the wire rope from the
main body by setting the clamp lever into the
notch (disengage clamp), then pulling the
wire rope from the inlet side at the rear of
the puller.
6. After the wire rope is removed, push the
clamp lever out of the notch and let it snap
back to its original position. If the clamp
lever is kept in the notch for an extended
time period, its spring may become
stretched.
7. Wipe off any sand or water from the puller
body, including internal mechanisms, and
the wire rope, then apply oil liberally to both.
8. Store the grip puller away from rain, dew,
high humidity areas or around acidic
chemicals, which will promote rusting.
Maintenance
Make frequent and careful inspections of the
puller. Make sure puller and wire rope are
sufficiently oiled, and that they are free of any
sand, dirt, dust or other obstruction or
abnormality.
Make sure hooks are not deformed and that the
puller body has not been warped or damaged.
Use care to prevent the wire rope from kinking. If
the rope is left shaped like a basket or is kinked
many turns at a single point, its strength is
greatly diminished and may result in failure.
Replace the wire rope immediately if:
•
The thickness of the rope becomes less
than half of the original value due to
abrasion.
•
The rope exhibits basket-like shapes, kinks,
or any abnormal deformation.
•
The rope is given an exceptionally heavy
shock during operation; this can fatigue the
rope even if the load is within puller
capacity.
•
The entire rope is napped due to many small
cuts.
•
The eye section (thimble) of the wire rope
becomes elliptical in shape.
•
The clamp is deformed.
Troubleshooting
Trouble Probable Cause Remedy
Wire rope will not
move in either
direction.
Insufficient lubrication. Oil the puller and wire rope.
Puller is dirty.
Disassemble and clean out dust, dirt
or other foreign matter. Oil the puller
after reassembly.
Clamp lever is not in proper position.
Release clamp lever from notch, and
allow it to return to engaged position.
Wire rope will not
advance during
normal operation, or
advances with great
difficulty.
Clamp lever is not in proper position.
Release clamp lever from notch, and
allow it to return to engaged position.
Pawls are not lubricated.
Oil the pawl linkages properly; the
pawls must engage the wire rope.
Load is beyond puller capacity. Decrease load.
There is an obstruction within the wire
rope’s path. Remove the wire rope; clean and oil
the puller and the wire rope.
The reverse lever is engaging the
wire rope. Check the position of the reverse
lever. Correct as needed.
Clamp lever will not
engage the wire rope
properly.
Spring on clamp lever has become
stretched.
Replace spring.