Manitowoc Grove GMK 4100L-1, Руководство по обслуживанию

Страница: 293 / 356

Maintenance work on the superstructure
8.8 Hoist ropes
2
5
.1
1.
201
6
Maintenance manual 3 302 364 en 8 - 57
GMK 4100L-1
s
Damage Description Cause Replacement
Reduced
diameter (1) The diameter 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-
type rope
deforma-
tion (2) The rope winds its
way along its
longitudinal axis in a
way that is similar to
a corkscrew.
Deformation is
measured with
suspended hook
block. Damage resulting
from overloading. Even a small amount of
deformation 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
deforma-
tion (3) Wires of the outer
layer protrude. In
other areas of the
rope, the insert has
buckled or is
protruding from the
rope. Outer and inner layers
have been displaced
in relation to each
other. Replace the rope immediately .