Manitowoc Published 07-23-15, Control # 078-03 4-23
31000 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION
22
Information below from drawing A19443, Sheets 3, 4, and 13:
Assemble the jib support straps (J) to the main strut:
• Move the pin holding the link support set (B) to the storage trough (C) from the storage position (D) to the
working position (E). Failure to move this pin will damage the crane.
• Prepare to assemble the jib backstay straps (J) necessary for the current #90 boom length. Refer to drawing
A19443 (examples H and I provided below).
• Flip jib backstay strap links (F) to their working position.
Step Action
FIGURE 4-23
H
I
K
K
G
G
A
G
J
Item Description
A Assist crane.
B Link support set.
C Storage trough.
D Pin (storage position).
E Pin (working position).
F Link (working position).
G Strut cap.
H 55 m (180.5 ft) #90 boom example.
I 60 m (196.9 ft) #90 boom example.
J Jib backstay strap.
K Jib backstay spreader.
B
C
D
E
F
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