Manitowoc 999 User Manual

Reference Only
Manitowoc Published 05-15-17, Control # 043-09 4-47
999 LUFFING JIB OPERATOR MANUAL SETUP AND INSTALLATION
4
perform steps 1 and 2 before raising the boom and
luffing jib and securely fasten the load line to the jib
point.
1. See Load Block Reeving in this section for proper
routing of desired load line to jib point.
2. Pull approximately 50 ft (5,24 m) of load line past end of
jib point and securely fasten load line to end of jib.
Weight ball or load block will be installed just prior to
lifting jib from ground.
Installing Electronic Devices
1. Install block-up limit and load indicator components and
connect electric cords to required junction boxes on jib
points (see Boom Wiring Drawing at end of this section).
2. Connect all unused electric cords to proper shorting
plugs on junction boxes. Boom and luffing jib will not
lower and drums will not hoist if electric cords are
not shorted out.
3. Adjust block-up limit switch at fixed jib point according to
instructions in Section 6.
Pre-Raising Checks
 Boom and luffing jib properly assembled according to
instructions in this manual and in Crane Operator
Manual.
 Crawlers blocked (required for all boom and jib lengths).
See Crawler Blocking Diagram in Luffing Jib Capacity
Chart Manual.
 All installation steps given in this section performed.
 All connecting pins installed and properly secured.
 Load line to fixed jib anchored properly on drum,
spooled tightly onto drum, and routed through proper
sheaves. Make sure rope guard pins, bars, or rollers
are installed to retain wire rope in sheaves.
 If load line will be installed after boom and luffing jib are
jack-knifed into position, make sure load line going to
jib point is securely anchored to end of jib point so
load line cannot fall off jib and boom.
 All blocking, tools, and other items removed from jib and
jib point roller path area.
 Pendants not hooked alongside jib. Guide pendant
connectors clear of jib chords as jib is raised.
 All safety devices installed, electric cords connected,
and limits adjusted.
 Luffing Jib Raising Procedure Chart reviewed to
determine required boom to luffing jib angle for raising
fixed jib.
 Wind within allowable limits for raising boom and jib (see
Section 3).
 All lube points greased (see Section 5).
 LUFFING JIB mode selected and confirmed.
WARNING
Falling Wire Rope Hazard!
For long boom and short luffing jib combinations, load line
on boom side of attachment can overhaul load line on
luffing jib side of attachment. Load line could fall off boom
as attachment is raised. Securely fasten load line to jib
point before raising attachment.

Manitowoc 999 Specifications

General

Brand	Manitowoc
Model	999
Category	Construction Equipment
Language	English