SET-UP AND INSTALLATION 31000 LUFFING JIB OPERATOR MANUAL
4-58 Published 07-23-15, Control # 078-03
Raise the Luffing Jib
Step Action
63
Information below from drawing A19443, Sheet 25:
Position the dolly:
• Use straps to attach an assist crane (A) to the jib top tubes (B).
• Raise the #91 luffing jib (C) high enough to place the jib top in the dolly cradle (D).
NOTE: Before using the dolly, prepare it as described in Section 4 of the 31000 Operator Manual.
FIGURE 4-61
Item Description
A Assist crane.
B Jib top tube.
C #91 luffing jib.
D Dolly cradle.
E Upper boom point.
Dolly Configuration for #91 Luffing Jib Lengths less than 72 m (236.2 ft)
Dolly Configuration for #91 Luffing Jib Lengths equal to greater than 72m (236.2 ft)
A
Sling attachment
lifting points
C
D
A
C
D
E
E
B
B
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