Manitowoc Published 12-10-19, Control # 258-05 4-57
MLC90A-1/MLC100-1 OPERATOR MANUAL SETUP AND INSTALLATION
Install Jib/Backstay Pendants
See Figure 4-38.
NOTE: The jib pendants must be installed in the same
sequence as the jib sections.
The jib pendants are furnished in matched sets of
two and must be installed in matched sets — the
pendant on one side of the jib section must match
the pendant on other side of the jib section.
1. Carefully uncoil the pendants alongside the jib. Use care
not to kink them.
2. Thoroughly clean and lubricate the pendants.
3. Remove the pins from the pendant ends.
4. Starting at the jib top (2):
a. Pin the jib top pendants (5, View A) to the jib top
links (6) with the pendant pins (7) and cotter pins.
b. If required, pin the jib insert pendants (8, View D) to
the jib top pendants (5) and to each other with the
pendant pins (7) and cotter pins.
c. Pin the jib top pendants (5, View B) or the jib insert
pendants (8) to the strut links (9) with the pendant
pins (7) and cotter pins.
5. At the jib strut (4, View B):
a. Pin the backstay pendants (10) to the strut links (11)
with the pendant pins (7) and cotter pins.
b. Lay the backstay pendants on the ground alongside
the boom top.
Prepare to Raise Jib Strut
The jib strut can be raised either using an assist crane or with
the whip line (Drum 1) from this crane.
The strut can be raised with the whip line only for boom
lengths longer than 22 m (72.2 ft). For lesser boom
lengths, the equalizer will interfere with rope routing.
If the strut will be raised with the whip line, the following steps
must first be performed for this crane:
• Boom fully rigged and connected to the boom butt.
• Boom pendants installed/connected and connected to
the equalizer.
• Equalizer unpinned from the rails and raised so the whip
line can be routed under the equalizer to the boom top.
Deploy Strut Raising Arm
See Figure 4-38, View E and G.
1. Route the whip line (12) from Drum 1 to the end of the
strut raising arm (13).
2. If not already done, assemble the button socket (14) to
the end of the whip line (12) and remove the pin (15).
3. Remove the rope guard pin (16, View F)
4. Raise the strut raising arm (13) by hand. It weighs 11 kg
(25 lb).
5. Pin the button socket (14) to the strut raising arm (13)
with the pin (15) and cotter pin.
6. Haul in the whip line just enough to support the strut
raising arm.
WARNING
Flying Object Hazard!
Use extreme care when handling coiled pendants. Stored
energy can cause the coiled pendants to uncoil quickly
with considerable force.
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