18
G
The wire rope does not spool
smoothly on the drum.
1. Check mounting distance and
eet angle. Reposition hoist as
required.
2. Refer to “Hoist Installation.”
3. Consult wire rope manufacturer
for recommendation of wire rope
best suiting your application.
4. Replace wire rope and
conduct operator/rigger training
as required.
1. The hoist may be mounted too close
to the main sheave, causing the eet
angle to be more than 1-1/2 degrees.
2. The hoist may not be mounted per-
pendicular to an imaginary line be-
tween the center of the cable drum
and the rst sheave.
3. Could possibly be using the wrong
lay rope. There is a distinct advantage
in applying rope of the proper direc-
tion of lay. When the load is slacked
o, the several coils on the drum will
stay closer together and maintain an
even layer. If rope of improper lay is
used, the coils will spread apart each
time the load is removed. Then, when
winding is resumed, the rope has a
tendency to crisscross and overlap on
the drum. The result is apt to be a at-
tened and crushed rope.
4. The hoist may have been overload-
ed, causing permanent set in the wire
rope.
F
Hoist “chatters” while raising rated
load.
TROUBLE
PROBABLE CAUSE
REMEDY
1. Same as REMEDY for D2.
2. Same as REMEDY for E2.
3. Conduct operator training as
required.
1. Same PROBABLE CAUSE as D2.
2. Hydraulic oil ow to motor may be
too low.
3. Controls being operated too quickly.
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