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Manitowoc 31000

Manitowoc 31000
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SET-UP AND INSTALLATION 31000 LUFFING JIB OPERATOR MANUAL
4-8 Published 07-23-15, Control # 078-03
7
Information below from drawing A19443, Sheet 3:
Boom point left hand lower assembly installation on the #90 boom top:
Position the boom point left hand lower assembly (B) on the grade shown below.
Use an assist crane to position the #90 boom top (A) over the boom point left hand lower assembly (B).
Fasten the rear pins (C).
Lower the #90 boom top (A) until it is possible to engage the front pins (D) with the pull puller.
For two drum/lead operation at the luffing jib top, relocate swivel (E) and socket (F) from the #90 boom top (A) to
the #91 luffing jib top (see Figure 4-54
on page 4-52).
NOTE: The socket (F) will be used on the Drum 2 wire rope to position the main strut (see Figure 4-26
on
page 4-26
).
Step Action
FIGURE 4-8
Item Description
A #90 boom top.
B Boom point left hand lower assembly.
C Rear pins.
D Front pins.
E Swivel.
F Socket.
A
B
B
B
A
A
C
E
E
F
F
D

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