Manitowoc Grove GRT880, Operator'S Manual

Page: 147 / 202

Grove
Published 3-25-2020, Control # 643-04
4-5
GRT880 OPERATOR MANUAL SET-UP AND INSTALLATION
4
CABLE REEVING
NOTE: 35 x 7 (rotation resistant) cable (wire rope) is used
on this crane.
Within load and range chart limits and permissible line pull,
multi-part lines allow the operator to raise a greater load than
can be raised with a single part line. Various cable reeving
(part line) is possible with the boom nose and hook block,
Figure 4-6 and Figure 4-11. Reeving should be done by a
qualified rigger using standard rigging procedures.
To quick reeve hook block without removing wedge socket
on end of cable refer to Figure 4-6.
Reeving Boom Cable
Always reeve main hoist wire rope through rope grab (1).
Always reeve auxiliary hoist rope
outside rope grab.
NOTE: Also use the rope grab when using the Main Hoist
with lattice inserts.
DEAD-END RIGGING/WEDGE SOCKETS
Wedge socket assemblies are popular rigging accessories
used for decades to terminate wire ropes on mobile cranes.
A wedge socket assembly is easily installed and dismantled,
but must be installed and used correctly. Use only a wedge
and socket of the correct size for the rope fitted. Failure to do
so may result in rope pulling through 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
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 requirements of the wedge
socket manufacturer and wire rope manufacturer upon
whose wire rope the wedge socket assembly will be used.
Grove specifies 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 it manufactures.
Other wire ropes and rigging accessories are available from
various vendors. Different wire rope manufacturers have
differing requirements for construction, handling, cutting,
seizi ng, installation, termination, i nspection, and
replacement of 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 boom to a working
position with a load suspended to firmly seat wedge and rope
in socket before crane is used operationally.
CAUTION
Do not reeve auxiliary hoist rope through the rope grab.
FIGURE 4-6
Item Description
1 Pin
2 Rope Guard
1
1
2
CAUTION
If socket is not positioned with flat face toward boom
sections, structural damage will occur.
FIGURE 4-7
7053
1