TM5-3810-305-10
Equipment
Inspection
Any undetected fault on a sheave, roller or drum,
be it of relatively major or minor significance,
can cause a rope to wear out many times faster
than the wear resulting from normal operations.
As a positive means of minimizing abuses and
other-than-normal wear, the procedures here set
forth should be adhered to. Every observation
and measurement should be carefully recorded
and kept in some suitable and accessible file.
1.
2.
3.
4.
Give close examination to the method by
which the rope is attached both to the drum
and to the load. Make certain that the proper
means of attachment is applied correctly, and
that any safety devices in use are in satisfac-
tory working order.
Carefully check the groove and working
surface of every sheave, roller and drum to
determine whether each (groove and surface)
is as near to the correct diameter and contour
as circumstances will permit, and whether all
surfaces that are in contact with the rope are
smooth and free of corrugations or other
abrasive defects.
Check sheaves and rollers to determine
whether each turns freely, and whether they
are properly aligned with the travel of the
rope. All bearings must be in good operating
condition and furnish adequate support to the
sheaves and rollers. Sheaves that are permit-
ted to wobble will create additional forces
that accelerate the deterioration rate of the
rope.
If starter, filler and riser strips on drums are
used, check their condition and location.
Should these be worn, improperly located or
badly designed, they will cause poor winding,
dog legs and other line damage.
5. Whenever possible, follow the path that the
rope will follow through a complete operating
cycle. Be on the lookout for spots on the
equipment that have been worn bright or cut
into by the rope as it moves through the
system. Ordinarily, excessive abrasive wear
on the rope can be eliminated at these points
by means of some type of protector or roller.
Refer to Appendix B, page B-2 for complete
information regarding lubrication of the cable.
4 - 5
5
Cable Lubrication
