Manitowoc 999 User Manual

Reference Only
Manitowoc Published 05-15-17, Control # 043-09 4-9
999 LUFFING JIB OPERATOR MANUAL SETUP AND INSTALLATION
4
Install Jib Top
See Figure 4-5 for the following procedure.
The following procedure assumes that the upper point roller
assembly was removed from the jib top for shipping.
1. Install jib top in same manner inserts were installed.
2. Lift upper point roller assembly into position at end of jib
top and align top connecting holes (View B).
3. Install top connecting pins (1, View A).
4. Attach slings from assist around to top chords at end of
jib insert next to jib top (View C). Assist crane and
slings must be able to lift one-half weight of
complete jib.
5. Raise jib to align bottom connecting holes between jib
top and upper point roller assembly.
6. Install bottom connecting pins (1, View A).
Connect Jib Straps
See Figure 4-4 for the following procedure.
Jib straps (23) and links (24) are shipped in the stored
position on the jib sections as shown in View F. Connect
straps, as follows:
1. Remove storage pins (25) from top holes in strap
brackets (View F).
2. Store pins (25) in bottom holes in strap brackets (View
E).
3. Remove pins (26) from straps on adjacent section.
4. Rotate links (24) forward and pin to adjacent straps with
pins (26, View E) — pin heads toward outside of jib.
Install Jib Backstay Pendants
See Figure 4-5 for the following procedure.
1. Depending on boom length, pin pendants (3) or links (5
and/or 6) to links (2) on boom butt wire rope guide (View
D1, D2, or D3).
2. Pin adjacent backstay pendants (4) to pendants (3, View
D1) or to links (6, View D2 or D3).
3. While working toward boom top, pin remaining backstay
pendants (4) together in the proper sequence and lay
pendants along top of boom inserts.
4. Pin basic backstay pendants (7) to last backstay
pendant (4) and lay pendants along top of boom top.
WARNING
Falling Boom Hazard!
Starting at boom butt wire rope guide, jib backstay
pendants must be installed in same sequence as inserts
(shortest inserts and pendants nearest butt).
Pendants are furnished in matched sets of two and must
be installed in matched sets — pendant on one side of
boom insert must match pendant on opposite side of
boom insert.
Failing to observe this precaution will cause main
strut to twist excessively when boom is raised.
Structural damage to jib or boom could occur.

Manitowoc 999 Specifications

General

Brand	Manitowoc
Model	999
Category	Construction Equipment
Language	English