Manitowoc Grove GMK 5200-1, Руководство по обслуживанию

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Maintenance work on the superstructure
8.8 Hoist ropes
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9
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3.
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Maintenance manual 3 302 746 en 8 - 59
GMK5200-1
s
Damage Description Cause Replacement
Reduced
diameter (1) The diameter of the
rope has become
smaller along large
sections. Structural changes Immediately replace the rope
if the diameter has decreased
by 15% or more compared to
the nominal diameter.
Corrosion or abrasion. Immediately replace the rope
if the diameter has decreased
by 10% or more compared to
the nominal diameter.
Corkscrew-
type rope
deformation
(2) The rope winds its
way along its longi-
tudinal axis in a way
that is similar to a
corkscrew.
Deformation is
measured with sus-
pended hook block. Damage resulting
from overloading. Even a small amount of defor-
mation leads to increased
abrasion, wire breaks and
rough operation 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 replaced
immediately .
Basketlike
deformation
(3) Wires of the outer
layer protrude. In
other 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 .