Manitowoc Grove GMK 5250L Maintenance Manual page 290

Maintenance work on the superstructure
8.8 Hoist ropes
S
Damage
Wire break (1) Individual wires are
broken; the broken
Wire break-
ends of the wires
age cluster (2)
are protruding
Strand break- from the rope.
age (3)
Effect of heat Tarnished colour is
visible externally
on the rope.
8 - 62
Risk of accidents due to reduced load bearing capacity.
Remember that other factors may also make it necessary to replace a rope
before the number of wire breaks requiring rope replacement has been
reached (age of rope, frequency of use or exceptional loading).
Description
General wear caused
by ageing of the rope
or
consequential dam-
age as a result of dam-
age to the rope.
Rope has been sub-
jected to excessive
heat.
Cause
3 302 744 en
Replacement
Replace the rope at the latest
when the maximum permissi-
ble number of wire breaks
according to the table are
visible externally.
Replace the rope immediately if
wire break clusters or strand
breakages occur.
The frequency of wire breaks
increases with a rope's age. For
reasons of safety, it is advisable
to replace the rope while the
number of wire breaks is still
low.
Replace the rope immediately.
Maintenance manual
GMK5250L