Maintenance work on the superstructure
8.9 Hoist ropes
8 - 78 3 302 756 en Maintenance manual
GMK6400
16.11.2018
Damage Description Cause Replacement
Loop forma-
tion (1)
Outer layer wires in
the form 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 be-
come loose. Only
the inner strands
continue to bear
the load.
Corrosion or
abrasion.
Replace the rope immediately.
Other causes. The number of wire breaks de-
termines when the rope must
be replaced.
Knot
formation (3)
If there is repeatedly
occurring knot-like
thickening of the
rope; the insert
comes out
frequently.
Strands bear on
each other at thin
points; increased
frequency of wire
breaks.
General wear due to
ageing of the rope 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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