Manitowoc Published 10-01-2012, Control # 045-08 5-21
777 SERVICE MANUAL HOISTS
5
Distributing Wire Rope Wear
Wire rope wear at the critical wear points can be reduced
and the life of the wire rope extended by moving the rope at
regular intervals so different sections of rope are subjected to
the wear points. This practice can also help correct spooling
problems and rope vibration.
To move the wire rope, cut off a piece of wire rope at the
drum and refasten it. The piece cut off should be long
enough to move wire rope at least one full drum wrap.
If the wire rope is too short to allow cutting off a piece of it,
reverse the rope end for end and refasten it
WARNING
Falling Load Hazard!
Wire rope can break if following precaution is not
observed.
Replacement wire rope must meet specifications given in
Wire Rope Specifications Chart (load lines) or Boom
Rigging Drawing (boom hoist) supplied with your crane.
FIGURE 5-17
S144
S145
S146
S147
S148
S149
Dog-Leg
or
Kink
Drum
Abrasion
Drum
Crushing
Sheaves
Too Small
Corrosion
Bird Cage
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