SET-UP AND INSTALLATION 31000 LUFFING JIB OPERATOR MANUAL
4-24 Published 07-23-15, Control # 078-03
23
Using drawing A19443 as a guide, connect the jib backstay straps (A):
• Move the strap links from the tie-down position (C) to the stowage position (D).
• Remove the pin, collar, and pin assembly (G) from the strap as shown below.
• Attach the strap rigging winch (F) to the strap as shown below. Then attach the lifting pin (H) from the winch to
the boom link support set (B).
• Use the strap rigging winch (F) to flip over the boom link support set (B).
• Reattach the pin, collar, and pin assembly (G).
24
Connect the jib backstay spreader:
• See Figure 4-25
if the crane boom length is less than 70 m (229.7 ft).
• See Figure 4-26
if the crane boom length is 70 m (229.7 ft) or greater.
Step Action
Item Description
A Jib backstay strap.
B Boom link support set.
C Strap link (tie-down position).
D Strap link (stowage position).
E Boom insert.
F Strap rigging winch.
G Pin, collar, pin assembly.
H Lifting pin.
A
A
B
C
E
E
A
A
B
D
F (storage configuration)
E
E
G
B
A
A
E
E
F
H
F
FIGURE 4-24
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