Manitowoc Published 11-20-19, Control # 234-19 4-109
MLC300 OPERATOR MANUAL SETUP AND INSTALLATION
Prepare Intermediate Suspension Pendants
See Figure 4-74, for the following procedure3.
The intermediate suspension pendants (1, View A) and
rigging components are pre-assembled and shipped in the
12 m (39.4 ft) intermediate suspension insert (2).
Each pendant (1) is equipped with seven buttons (3, View D)
The pendant buttons are numbered 1 through 7.
1. Make sure the intermediate suspension insert (2) is
installed at the proper location in the boom.
2. Refer to Boom Rigging Drawing at the end of this section
to determine the pendant button number that must be
pinned to the sockets (see the example in Figure 4-75
).
3. Remove the socket locking pins (4, View B) and raise
the sockets (5) from the shipping position to the rigging
position (View C).
4. Reinstall the socket locking pins (4, View C) in the top
bracket holes.
5. Disconnect the pendant hooks (6, View F) from the
brackets (7).
6. Remove the button locking pins (8, View C).
7. Perform the remaining steps as the boom is raised:
a. As the boom straps rise during the boom raising
procedure (page 4-110
), guide the intermediate
suspension pendants through the opening between
the boom inserts. Take care not to damage
lacings.
b. Signal the crane operator to stop the boom raising
procedure when the required pendant buttons (3,
View D) are near the sockets (5, View C).
c. Engage the proper pendant button in each socket
(5, View C).
d. Reinstall the button locking pins (8, View C).
e. Remove the socket locking pins (4, View C) and
install the pins (4, View E) in the working position
(bottom bracket holes).
f. Connect each pendant hook (6, View F) to the
closest point on the chord to remove the slack from
the pendants.
g. Continue the boom raising procedure.
Figure 4-75
Boom Makeup Table on
Boom Rigging Drawing
Button Number
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