Dead-End Rigging/Wedge Sockets; Installing Wedge And Socket - Manitowoc Grove RT600E Operator's Manual

SET-UP AND INSTALLATION PROCEDURES

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
m e t h o d s m a y b e n e c e s s a r y d e p e n d i n g u p o n w o r k
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
local Grove 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.
Manitowoc Crane Group specifies the size, type, class and
line pulls for wire rope, predominately rotation resistant wire
rope, and rigging accessories such as overhaul balls and
h o o k b l o c k s f o r u s e w i t h e a c h n e w c r a n e t h a t i t
manufactures. Other wire ropes and rigging accessories are
available from various vendors. Different wire rope
man uf ac ture rs ha ve differ ing re qu ire men ts fo r t he
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.
CAUTION
If the socket is not positioned with the flat face toward the
boom sections, structural damage will occur.
4-6
When anchoring the socket to the boom, ensure the flat face
of the socket is in position, as shown, toward the boom
sections (Figure 4-5).

Installing Wedge And Socket

1. Inspect the wedge and socket. Remove any rough
edges and burrs.
2. The end of the wire rope should be seized 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. Make sure the live-end (Figure 4-6) 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.
.
Wedge Socket
Live
End
4. Insert the end of the wire rope into the socket, form a
loop in the rope, and route the rope back through the
socket allowing the dead-end (Figure 4-6) to protrude
from the socket. Ensure the dead-end of the rope is of
sufficient length to apply end treatment 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. It is recommended that the wedge be seated
inside the socket to properly secure the wire rope 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
FIGURE 4-5
gradually until the wedge is properly seated.
Published 05-02-2018 Control # 088-10
RT600E OPERATOR MANUAL
Dead
Dead
End
End
20 x Cable Dia
Minimum
RIGHT
Live End is
Entering
Wrong Side
WRONG
FIGURE 4-6