Manitowoc 999, Service And Maintenance Manual

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Reference
Only
HOISTS 999 SERVICE/MAINTENANCE MANUAL
5-16
Published 05-16-17, Control # 233-03
Rope That Has Been Idle a Month or More
Wire rope must be given a complete inspection if it has been
idle for a month or more. The inspection must be performed
by a qualified inspector looking for the damage identified
under both Daily and Periodic Comprehensive Inspection.
NOTE: Wire rope may be purchased through the
Manitowoc Crane Care Lattice Team.
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 worn
end and refasten. 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.
FIGURE 5-12
Item Description
1
Lay Length: distance in which one strand makes one
complete revolution around core.
2 Core
3 Strand
4 Wire
1
2
4
3
DANGER
Falling Load Hazard
Replacement wire rope can break if it does not meet
Manitowoc specifications given in the following
publications supplied with your crane:
• Wire Rope Specifications Chart located in Capacity
Chart Manual (for load lines).
• Boom or jib assembly drawings located in crane
Operator Manual (for boom or luffing hoist).
• Mast assembly drawing located in Parts Manual.