SET-UP AND INSTALLATION 31000 LUFFING JIB OPERATOR MANUAL
4-12 Published 07-23-15, Control # 078-03
11
Information below from drawing A19443, Sheet 9:
Attach the jib strut to the #90 boom:
• Use an assist crane (see Figure 4-13
) to align the jib strut butt (A) with the #90 boom top (B).
• Install the jib strut hinge pin (C), luffing jib hinge pin (D), and link (E). The arrow (H) on the jib strut hinge pin (C)
shall point towards the crane.
• Attach an end plate (F) and swivel hook (G) to the end of the jib strut hinge pin (C).
Step Action
Item Description
A Jib strut butt.
B #90 boom top.
C Jib strut hinge pin.
D Luffing jib hinge pin.
E Link.
F End plate.
G Swivel hook.
H Arrow.
FIGURE 4-12
A
B
C
D
E
C
F
G
E
The end plate (F) for the luffing jib hinge pin is
attached in a later step (see Figure 4-53
).
The luffing jib hinge pin (C) is installed now to
prevent the jib strut hinge pin from rotating.
H
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