Maintenance work on the superstructure
8.12 Hoist ropes
8 - 104 3 302 577 en Maintenance manual
GMK7450
16.08.2018
Damage Description Cause Replacement
Loop forma-
tion (1)
Outer layer wires in
the fo
rm of hair pins
are protruding from
the rope away from
the sheave.
General wear due to
ageing of the rope or
consequential dam-
age as a result of
damage to the rope.
Immediately replace the rope if
the rope structure has been
substantially altered by the
loop formations.
Loosening of
wires or
strands (2)
Outer wires or
strands have
become loo
se. Only
the inner strands
continue to bear the
load.
Corrosion or abra-
sion.
Replace the rope immediately.
Other causes. The number of wire breaks
determines when the rope
must be replaced.
Knot forma-
tion (3)
If there is repeatedly
occurring knot-like
thicken
ing of the
rope; the
insert
comes out fre-
quently.
Strands bear on
each other
at thin
points; increased
frequency of wire
breaks.
General wear due to
agei
ng of the rop
e or
consequential dam-
age as a result of
damage to the rope.
Determine number of wire
breaks; replace rope immedi-
ately if serious knot formation
occurs.
Constric-
tion (4)
Diameter reduction
over short
sections.
General wear caused
by ageing of the rope.
Replace rope immediately if
serious constrictions are
detected.
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