Manitowoc 777 User Manual

Reference Only
SET-UP AND INSTALLATION 777 OPERATOR’S MANUAL
4-38 Published 10-01-12, Control # 044-05
BOOM RIGGING GUIDE
This topic contains installation and removal instructions for
all parts of the boom except the boom butt. Boom butt
remains with the crane.
See the Jib Rigging Guide in Section 4 of this manual for jib
installation and removal instructions.
Assist Crane Requirements
An assist crane is not required to assemble and disassemble
the boom components. The 777 can be used to assemble
and disassemble its own boom. See Crane Weights in the
Crane Operator’s Manual for weights of boom components.
The 777 must be in the following configuration to assemble
its own boom and jib:
• Crane rigged as shown in Figure 4-24.
• Radius limited to 26 ft (7.9 m).
• Capacity limited to 40,000 lb (18 144 kg) to include 2-
part load line, load block, and lifting slings.
WARNING
Falling Load Hazard!
Prevent crane from tipping or structural damage to
components:
• Do not exceed 26 ft (7.9) radius.
• Do not lift more than 40,000 lb (18 144 kg).
da0111.ai
FIGURE 4-24
4-Leg
Boom Section
Boom
Butt
Mast
Boom
Stop
Crawler
Assembly
Rigging
Pendant
Wire Rope
Guides
30 U.S. Ton
(27 metric ton)
Assembly Block
Boom
Hoist
Cylinder
Upper Counterweight
(Series-2 shown)
Chain Sling
View A
P528
Lifting
Lug
Carbody Counterweight
(both ends, Series-2 only)
Operator’s
Cab

Manitowoc 777 Specifications

General

Brand	Manitowoc
Model	777
Category	Construction Equipment
Language	English