SET-UP AND INSTALLATION PROCEDURES RT540E OPERATOR MANUAL
4-8 Published 01-15-2016, Control # 526-01
DEAD-END RIGGING/WEDGE SOCKETS
Wedge socket assemblies are popular rigging accessories
and have been successfully used for decades to terminate
wire ropes on mobile cranes. A wedge socket assembly is
easily installed and dismantled but it must be installed and
used correctly. It is essential to use only a wedge and socket
of the correct size for the rope fitted. Failure to do so may
result in the rope pulling through the fitting.
Since state and local laws may vary, alternate attachment
methods may be necessary depending upon work
conditions. If alternate methods are selected, the user is
responsible and should proceed in compliance with the
regulations in force. If there are any questions, contact your
Manitowoc distributor or Manitowoc Crane Care.
Do not mix components from different manufacturers. The
selection, installation and use of a wedge socket assembly
must be in accordance with the requirements of the wedge
socket manufacturer and the wire rope manufacturer upon
whose wire rope the wedge socket assembly will be used.
Grove Crane specifies the size, type, class and line pulls for
wire rope, predominately rotation resistant wire rope, and
rigging accessories such as overhaul balls and hook blocks
for use with each new crane that it manufactures. Other wire
ropes and rigging accessories are available from various
vendors. Different wire rope manufacturers have differing
requirements for the construction, handling, cutting, seizing,
installation, termination, inspection and replacement of the
wire ropes they produce. Their advice should be sought for
each specific type of wire rope a crane user intends to install
on a mobile crane.
When assembly is complete, raise the boom to a working
position with a load suspended to firmly seat the wedge and
rope into the socket before the crane is used operationally.
When anchoring the socket to the boom, ensure the flat face
of the socket is in position, as shown, toward the boom
sections Figure 4-6.
Installing Wedge And Socket
1. Inspect the wedge and socket. Remove any rough
edges and burrs.
2. Seize the end of the wire rope using soft or annealed
wire or strand. If the end of the rope is welded, the
welded end should be cut off. Do not weld on size 6x37
rope. This will allow the distortion of the rope strands,
caused by the bend around the wedge, to adjust
themselves at the end of the line. Refer to SECTION 1 -
Introduction in the Service Manual for wire rope
procedures.
3. Insert the rope into the socket, making sure the live-end
Figure 4-7 of the rope is directly in line with the ears of
the socket and the direction of pull to which the rope will
be subjected. If the rope is loaded into the socket
incorrectly, under a load the rope will bend as it leaves
the socket, and the edge of the socket will wear into the
rope causing damage to the rope and eventual failure.
.
4. Form a loop in the rope, and route the rope back through
the socket allowing the dead-end Figure 4-7 to protrude
from the socket. Ensure the dead-end of the rope is of
sufficient length to apply end rigging to the dead-end
after the wedge has been seated.
5. Insert the wedge into the loop and pull the live-end of the
rope until the wedge and rope are snug inside the
socket. Seat the wedge inside the socket by using the
crane’s hoist to first apply a light load to the live-end.
6. After final pin connections are made, increase the loads
gradually until the wedge is properly seated.
7. Apply dead-end rigging to the wedge socket assembly to
restrain the wedge from becoming dislodged from the
CAUTION
If the socket is not positioned with the flat face toward the
boom sections, structural damage will occur.
Dead
End
Dead
End
Live End is
Entering
Wrong Side
Live
End
20 x Cable Dia
Minimum
RIGHT
WRONG
FIGURE 4-8
Wedge Socket
Reference Only
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