Manitowoc Published 10-01-12, Control # 044-05 4-55
777 OPERATOR’S MANUAL SET-UP AND INSTALLATION
4
Blocked Crawler/Extended Outriggers
To prevent 777 crawler crane from tipping, some boom and
jib lengths must be raised and lowered over blocked
crawlers. See capacity charts for blocked crawler
requirements and to Crawler Blocking Diagram in the Crane
Operator’s Manual for instructions.
Jib Assembly Drawing
Jib components (top, inserts, butt, pendants) must be
assembled in proper sequence according to this topic and
the Jib Assembly drawing in this section. See Figure 4-34
and Figure 4-37 to determine quantity and length of inserts
and pendants required for various jib lengths.
A minimum boom length of 80 ft (24.4 m) is required for jib
attachment (see applicable Jib Lifting Capacity Chart for
boom and jib length limitations).
Identifying Jib Sections and Pendants
Jib sections are marked for proper identification as follows
(Figure 4-35, View A):
Past Production:
Jib number, part number, and manufacturing code stamped
into two connectors (diagonally opposite) on both ends of
each insert and on end of top and butt.
Current Production:
Jib number, part number, and manufacturing code stamped
into a plate mounted on all four chords of each section.
Pendants are marked for proper identification as shown in
Figure 4-35, View B.
DANGER
Tipping Hazard!
Do not attempt to raise or lower boom and jib from or to
ground until crawlers are blocked (if required) or
outriggers are fully extended and carrier is level.
PN-277360
PO-96858-90
SET-3
RL-6390B-01
1&1-4''X19.17'
6X25 EEIP RR IWRC
Chord
Rope Type
Aluminum Tag
(if equipped)
Diameter
(inches)
Diameter
(inches)
Length
(feet)
Length
(feet and inches)
Manitowoc
Purchase
Order Number
Manitowoc
Purchase Order
Number
Manitowoc
Part Number
Manitowoc
Part Number
Manufacturer’s
Number
Manufacturer’s
Number
View A
View B
Past Production
Current Production
Manitowoc
Part Number
Manitowoc
Part Number
Manufacturing
Code
Manufacturing
Code
Jib Number
Jib Number
FIGURE 4-35
F-BI-HH
#45 167969-2
02518823 1 1/4 x 19 2 277360 968588-90
#YY
Z-ZZ-ZZ
XXXXXX
B238
A524
A524
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