Maintenance work on the superstructure
8.12 Hoist ropes
16.08.2018
Maintenance manual 3 302 577 en 8 - 103
GMK7450
s
Damage Description Cause Replacement
Reduced
diameter (1)
The diamete
r of the
rope has become
smaller along large
sections.
Structural changes Replace the rope immediately
if the diameter has decreased
by 15% or more compared to
the nominal diameter.
Corrosion or abrasion. Replace the rope immediately
if the diameter has decreased
by 10% or more compared to
the nominal diameter.
Corkscrew-
ty
pe rope
deformation
(2)
The ro
pe winds its
way along its longi-
tudinal axis in a way
that is similar to a
corkscrew.
Deformati
on is
measured with sus-
pended hoo
k block.
Damage resulting
from ove
rlo
ading.
Even a small amount of defor-
mation leads to increased
abrasion, wire breaks and
rough opera
tion of the rope
drive.
If deformation “x” at a position
on the rope is greater than a
third of the rope diameter, the
rope must be repla
ced imme-
diately.
Basket like
deformation
(3)
Wires of the outer
layer protrude. In
othe
r areas of the
rope, the insert has
buckled or is pro-
truding from the
rope.
Outer and inner layers
have been displaced
in relation to each
other.
Replace the rope immediately.
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