Manitowoc Published 07-23-15, Control # 078-03 4-41
31000 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION
42
Information below from drawing A19443, Sheet 22:
Complete raising the main strut (B):
• Continue to hoist with the assist crane (A) while taking out slack with the Drum 6 winch wire rope (C).
• When the upper and lower sections of the main strut (B) are almost closed, verify that the connector pins are
fully retracted (see Figure 4-45
).
• Then hoist in with Drum 6 winch wire rope (C) to cause the main strut support stop (D) to retract. Let off with the
assist crane (A) to 10,000 to 15,000 pounds while simultaneously luffing up with Drum 5 wire rope (E) to
complete the closure.
• Use a man basket to ensure that the connector load bearing areas (F) are in contact before continuing.
Step Action
Item Description
A Assist crane.
B Main strut.
C Drum 6 winch wire rope.
D Main strut support stop.
E Drum 5 wire rope.
F Connector load bearing area.
A
About
50.5 m
(165.7 ft)
B
C
E
D
F
FIGURE 4-42
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