Manitowoc 999 User Manual

Reference Only
Manitowoc Published 05-15-17, Control # 043-09 4-17
999 LUFFING JIB OPERATOR MANUAL SETUP AND INSTALLATION
4
Installing Intermediate Suspension
General
Intermediate suspension is required for the following jib
lengths:
• Option A for specified jib lengths when intermediate fall
insert is installed.
• Option B for 230 and 240 ft (70,1 and 73,2 m) jib lengths
when intermediate fall insert is not installed. See Jib
Rigging Drawing to determine location of intermediate
suspension.
Option A
For this option, all of the intermediate suspension parts are
stored on the intermediate fall insert.
See Figure 4-9
, View A for the following procedure.
1. Unpin links (1) from stored position on jib straps.
2. Pin links (1) around jib links (4) at end of intermediate fall
insert.
3. Unpin pendants (5) from end of intermediate fall insert.
4. If required, remove pendants (7) from end of
intermediate fall insert and pin pendants (7) to pendants
(5).
Store pins (8) in brackets on end of intermediate fall
insert.
5. Pin pendants (5) or (7) to proper holes in end of
intermediate fall insert.
Option B
See Figure 4-9, View B for the following procedure.
1. Remove standard insert connector pin between required
jib inserts.
2. Connect links (9) to inserts with pins (10).
3. Attach lower pendants (11) to links (9) with pins (12).
4. Connect lower pendants (11), link (13), and upper
pendants (14) with pins (12).
5. Pin links (1) around jib links (4) between straps.
6. Pin pendants (14) to links (4).
Pre-Raising Checks
Make the following checks and correct any defects before
raising the attachment.
 Boom properly assembled and connected to crane
according to instructions 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.
 Boom and jib inserts installed in the proper sequence
according to Rigging Drawing.
 Boom and jib insert straps installed in the proper
sequence according to Rigging Drawing.
 Backstay pendants installed in the proper sequence
according to Rigging Drawing.
 All connecting pins installed and properly secured.
 Main strut raised and mast strut stop tubes pinned in
operating position.
 Jib strut unpinned from storage position.
 Boom and luffing hoist wire rope anchored properly to
drums, spooled tightly onto drums, and engaged with
proper sheaves (see Rigging Drawings and Wire Rope
Installation instructions in this section). Make sure rope
guard pins, bars, or rollers are installed to retain wire
rope in sheaves.
 Lower boom point sheaves removed (if required for
boom and jib length in use). See Luffing Jib Raising
Procedure for sheave removal requirements.
 Load lines anchored properly to drums, spooled tightly
onto drums, and engaged with proper sheaves (see
Load Block Reeving and Wire Rope Installation
instructions in this section). 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 jib are
jack-knifed into position, make sure load line going
to jib point is securely attached to end of jib point so
load line cannot fall off jib and boom.
 All blocking, tools, and other items removed from boom
and jib.
 All blocking, tools, and other items removed from jib
point roller path area.
 All safety devices installed, electric cords connected,
and limits adjusted (see instructions in Section 6):
• Rated Capacity Indicator/Limiter (see separate
manual)
• Automatic boom stop (must be reset for luffing jib
operation after boom and jib are raised)
• Automatic jib stops
• Jib and boom block-up limits
 Luffing Jib Raising Procedure Chart reviewed, and
following operations determined:
• Raising method — in-line or jack-knife
• Required boom to jib angle for jack-knife raising
method
 Raising procedure in this section read and thoroughly
understood.
 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.

Manitowoc 999 Specifications

General

Brand	Manitowoc
Model	999
Category	Construction Equipment
Language	English