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Figure 24, Abrasion Damage
Bulges or reduction in diameter (See Figure 25).
Figure 25, Measuring the diameter of a wire rope.
A wire rope with flattened sections where the diameter across the damaged section is less than five sixths
of the original diameter MUST BE removed from service and sent to a factory authorized service center
for repair. Also look for:
-Heat damage or electrical arc damage (indicated by blue or other discoloration, melting, weld spatter, or
apparent loss of lubrication),
-Excessive contamination which can prevent lubrication from penetrating the wire rope, increasing internal
friction and corrosion
A wire rope winch line exhibiting any of the above conditions MUST BE removed from service and sent to
a factory authorized service center for repair.
The presence of one or more broken wires in one rope lay length or one or more broken wires near an
attached fitting is cause for replacement.
If a broken wire is the result of corrosion or if the wire rope is excessively corroded, the cable must be
replaced. Corrosion often develops from the inside out and may have seriously weakened the wire rope
by the time it becomes visible.
Location of all broken wires MUST BE recorded in the Winch Line Inspection Log for reference during
future inspections.
The protruding end of any broken wires should be removed as they occur by bending backwards and
forwards using a pair of pliers until they break deep in the valley between two outer strands. Wear gloves
and protective eyewear during this operation.
Before re-installing the wire rope on the drum, inspect the surface of the drum spool, grooves and side
plates for any nicks, gouges, or other wear that could damage the wire rope.
GB
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