SETUP AND INSTALLATION MLC90A-1/MLC100-1 OPERATOR MANUAL
4-46
Published 12-10-19, Control # 258-05
BOOM AND JIB RIGGING — GENERAL
Blocked Crawlers
To prevent the crane from tipping, some boom and jib
lengths must be raised and lowered over blocked crawlers.
See the appropriate boom or jib capacity chart for blocked
crawler requirements and the Crawler Blocking Diagram in
the Capacity Chart Manual for instructions.
Boom Handling
Boom handling with the equalizer pinned to the boom butt
(Figure 4-30
) is limited to the boom length given in the Boom
Rigging Drawing at the end of this section.
Rigging Drawings
Boom and jib components (top, inserts, butt, pendants) must
be assembled in the proper sequence according to the
applicable Boom and Jib Rigging Drawings at the end of this
section.
Identifying Boom and Jib Components
See Figure 4-29.
The boom and jib sections are marked for proper
identification as shown in View A. An identification plate is
mounted on all four chords.
The boom inserts also have a chord identification plate
mounted on both top chords as shown in View B.
The boom and jib pendants are marked for proper
identification as shown in View C.
Figure 4-29
Item Description
1 Boom or Jib Chord
2 Boom or Jib Number
3 Manitowoc Part Number
4 Manitowoc Manufacturing Code
5 Chord Identification
6 Pendant
7Diameter
8 Length
9 Manitowoc Purchase Order Number
10 Wire Rope Type
11 Set Number
12 Manufacturer’s Number
13 Aluminum Tag (if equipped)
View A
View C
View B
DANGER
Tipping Hazard!
Do not attempt to raise or lower the boom or the boom
and jib from or to the ground until the crawlers are
blocked, if required. Otherwise, the crane will tip.
WARNING
Falling Boom Hazard!
Do not attempt to handle more boom with the equalizer
pinned to the boom butt than specified in the Boom
Rigging Drawing. Structural failure of components can
occur, allowing the boom to fall.
To Next Page
Loading...
Need help?
General
