Manitowoc Published 07-23-15, Control # 078-03 4-21
31000 LUFFING JIB OPERATOR MANUAL SET-UP AND INSTALLATION
20
Information below from drawing A19443, Sheet 13:
Use an assist crane (A) to attach the upper half of the main strut to the lower half of the main strut:
• Use the connector pins and the cotter pins provided (B).
• Attach the support strut (C or D) on the upper half insert to the lower half insert.
Step Action
Item Description
A Assist crane.
B Connector pin and cotter pin.
C Short support strut used for 70 m (229.7 ft), 75 m (246.1 ft), 80 m (262.5 ft), 85 m (278.9 ft), 90 m
(295.3 ft), 95 m (311.7 ft), 100 m (328.1 ft), and 105 m (344.5 ft) #90 boom lengths.
D Long support strut used for 55 m (180.5 ft), 60 m (196.9 ft), and 65 m (213.3 ft) #90 boom lengths.
A
B
B
D
FIGURE 4-21
C
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