Manitowoc 999 User Manual

Reference Only
Manitowoc Published 05-15-17, Control # 043-09 4-33
999 LUFFING JIB OPERATOR MANUAL SETUP AND INSTALLATION
4
Prepare Crane and Boom
See Figure 4-16 for the following procedure.
1. Position crane in assembly area.
2. Install outrigger assembly (View A).
a. Pin outrigger side beams to lugs on crawler side
frame (View C).
b. Remove pin and collar from storage lug on outrigger
beam (View B).
c. Place collar over outrigger pin and secure with collar
pin (View B).
d. Using screw jacks, turn down outrigger pads until
they are firmly seated against foundation (View A).
3. Swing crane so front of upperworks is 90° to crawlers
and over outrigger assembly.
4. Assemble boom to desired length per instructions in
Boom Rigging Guide. Block boom approximately 4 ft
(1,2 m) high.
5. Remove lower boom point. This is mandatory!
Assemble Partial Luffing Jib
See Figure 4-16 for the following procedure.
1. Assemble desired length of partial luffing jib (butt and
inserts without top) by performing following Installing
Jib steps:
a. Install Jib Stop Strut Assembly.
b. Install Jib Butt Assembly.
c. Install Jib Stop Pendants.
d. Connect Main Strut to Boom Top.
e. Raise Jib Strut to Assembly Position.
f. Install Jib Inserts.
g. Connect Jib Straps (between jib strut and each jib
insert).
2. Slide round bar through connector holes in last jib insert
and through holes in strap links (Figure 4-16
, View D).
Bar must be installed to prevent straps from
accidentally sliding off inserts as boom and luffing
jib are raised.
3. Pin rollers to bottom connectors at end of last jib insert
(View E).
To prevent excessive side load on boom, luffing jib, and
swing drive, release 999 swing brake and disengage
swing lock while rollers are touching ground.
4. Continue to assemble desired length of partial luffing jib
(butt and inserts without top) by performing following
Installing Jib steps:
a. Install Jib Backstay Pendants.
b. Install Luffing Hoist Wire Rope.
c. Raise Main Strut/Connect Backstay Pendants —
perform all steps so main strut is pinned in
operating position.
5. Tie load line off securely to end of last jib insert (View E)
with chain. Load line should have some slack but be
tight enough to keep it from falling off top of inserts.
This step is required to prevent load line on boom
side of attachment from overhauling load line on jib
side of attachment.
6. For Assemble-In-Air Raising Procedure the winch must
be installed on the end of last jib insert so that it may be
reached from the ground during disassembly (View F).
7. If fixed jib is used with luffing jib, attach backstay
pendants for fixed jib backstay to luffing jib insert.
Place pendants on top of insert.

Manitowoc 999 Specifications

General

Brand	Manitowoc
Model	999
Category	Construction Equipment
Language	English