WIRE ROPE INSTALLATION AND MAINTENANCE
Folio 931-4
Anchoring Wire Rope to Wedge Socket
Refer to Figure 7 in this section.
1. Assemble wire rope and wedge to socket so live side of
wire rope is in a straight line with socket pin hole.
Do not
assemble WRONG as shown in Figure 7.
2. Allow dead end of wire rope to extend past end of socket
amount shown in Figure 7. Allow wire rope to assume its
natural lay on live side of wire rope enough to tighten
wedge in socket.
3. Pull on live side of wire rope enough to tighten wedge in
socket.
4. Attach a wire rope clip to dead end of wire rope using
one of the RIGHT methods shown in Figure 7. Rope clip
will aid in preventing wire rope from being pulled out of
socket.
NOTE: Use Right Method A (Figure 7) only if wire rope clip
is small enough to be securely tightened to dead
end. Right Method C is limited to small diameter
wire rope because large diameter wire rope is hard
to loop.
5. After socket is pinned in place, hoist load slowly so
wedge seats tight.
Do not shock load socket and wedge
.
On current production cranes and attachments, Manitowoc
Cranes uses the Crosby “Terminator” wedge socket for dead
ending wire rope.
Read and follow Crosby instructions in
your Operator’s Manual for proper installation of the
“Terminator” wedge socket
.
Breaking in Wire Rope
After installing a new wire rope, break it in by operating it
several times under light load and at reduced speed. This
practice allows the wire rope to form its natural lay and the
strands to seat properly.
NOTE: Wire rope will stretch during the break-in period,
reducing the wire rope’s diameter as the strands
compact around the core.
The dead wraps of wire rope on the drum can become slack
during operation, even if the utmost care is used during
installation of the wire rope. This slackening is caused by the
normal stretch that occurs in a new wire rope under tension
and periodically throughout the wire rope’s life from release
of the load.
When slackness is noted, tightly wind the dead wraps of wire
rope onto the drum. If left uncorrected, a wedging action with
subsequent layers will occur, and the resultant abrasion may
cause broken wires in the dead wraps.
WARNING
Falling Load Hazard!
Wire rope can be pulled out of wedge socket if following
steps are not taken.
• Remove from wedge and socket all rough edges and
burrs which can cut wire rope or prevent wedge from
tightening in socket.
• Do not reinstall shipping material (bolt, plastic strap or
wire) in hole of wedge or socket after assembling.
Discard these materials because they can prevent
wedge from tightening in socket.
• Only use a wedge and socket which are correct size
for wire rope being used.
• Attach wire rope clip to dead end of wire rope after
assembling wire rope to wedge and socket.
If dead end of wire rope is welded, seize end of wire rope
and cut off weld before assembling to wedge and socket.
Weld will not allow strands of wire rope to adjust around
bend of wedge, resulting in high strands and wavy rope.
This condition can seriously weaken attachment.
WARNING
Falling Load Hazard!
Wire rope can break if following precaution is not
observed.
Do not attach dead end of wire rope to live side of wire
rope with wire rope clip. Wire rope clip will transfer load
from live side of wire rope to dead end, seriously
weakening attachment.
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