Manitowoc GROVE RT890E Operator's Manual page 64

SET-UP AND INSTALLATION
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
l o c a l M a n i t o w o c / G r o v e D i s t r i b u t o r o r M a n i t o w o c
CraneCARE.
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/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
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.
When anchoring the socket to the boom, ensure the flat face
of the socket is in position, as shown, toward the boom
sections
4-2
.
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. 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.
Live End
Dead End
Right
3. Make sure the live-loaded side 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. Insert the end of a wire rope into the socket, form a loop
in the rope, and route the rope back through the socket
allowing the "dead" end 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
RT890E
Wrong
5337