Manitowoc Published 10-01-12, Control # 044-05 4-49
777 OPERATOR’S MANUAL SET-UP AND INSTALLATION
4
arrangement allows the boom to be reassembled
faster.
It is owner/user’s responsibility to securely attach
pendants to inserts so that pendants cannot fall off
inserts during shipment.
Remove Intermediate Suspension
1. Using assist crane, lift strut until it is fully extended
(Figure 4-29, View E).
2. Remove pins and disengage outside latches on
suspension beam (Figure 4-29, View B).
3. Remove intermediate suspension from boom.
4. Remove strut supports (Figure 4-29, View C).
Disassemble Boom
1. Place blocking approximately 6 in. (152 mm) high under
insert to be removed.
2. Remove horizontal pins from bottom connector holes in
insert (Figure 4-28, View F).
3. Lift insert to disengage top connector holes from fixed
vertical pins (Figure 4-28, View A).
4. Remove insert.
5. Repeat steps 1 – 4 until all inserts and boom top are
disassembled.
WARNING
Collapsing Boom Hazard!
To prevent death or serious injury, do not stand on, inside,
or under boom sections during assembly. Always stand
outside of boom sections when installing connecting pins.
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