Manitowoc 999 User Manual

Reference Only
Manitowoc Published 05-15-17, Control # 043-09 4-35
999 LUFFING JIB OPERATOR MANUAL SETUP AND INSTALLATION
4
Raising Procedure
Before beginning the raising procedure, make the checks
listed under Pre-Raising Checks topic in this section and
correct any defects.
Two raising procedures are provided:
• Procedure A – Raise Boom and Luffing Jib
• Procedure B – Raise Boom, Luffing Jib, and Fixed Jib
Raise Jib
See Figure 4-17 for the following procedure.
1. Disconnect jib strut from strut supports.
2. LUFF UP to raise jib strut until jib straps just lift off rear
brackets (approximately 30°) (View C).
3. Attach lifting slings from assist crane to jib insert as
shown in Figure 4-18
. See View D for location.
4. Apply 999 swing brake and engage swing lock.
Swinging 999 is not permitted while jib rollers are off
ground.
Using assist crane, lift partial jib 1 - 2 ft (0,3 - 0,6 m) off
ground (Figure 4-19
). Assist crane must not exert side
load on jib.
WARNING
Moving Part Hazard!
Warn all personnel to stand clear of rollers while raising
boom and luffing jib.
Death or severe crushing injuries will occur if personnel
come into contact with rollers.
CAUTION
Structural Damage Hazard!
Prevent side load damage to boom and jib. Disengage
swing lock and release swing brake when jib point rollers
are on ground.
FIGURE 4-18
Lifting slings must be positioned in
front of vertical lacing and behind
FACT connector.
To prevent lifting slings from sliding
up insert, slings must be positioned in
front of vertical lacing on this side of
insert and in front of “V” lacing pattern
on opposite side of insert.
Lifting Slings
Attached to Assist
Crane
Lifting Slings
Attached to Assist
Crane
A1228
View A
(between inserts)
View B
(middle of insert)
Lifting Sling Capacity:
16,000 lbs (7 257 kg) Each

Manitowoc 999 Specifications

General

Brand	Manitowoc
Model	999
Category	Construction Equipment
Language	English