Remove Assembly Block; Assemble Fixed Mast; Install Mast Butt And Top - Manitowoc 18000 Operator's Manual

18000 OPERATOR MANUAL

Remove Assembly Block

Reverse steps under Install Assembly Block topic on
page 4-33.

Assemble Fixed Mast

An assist crane is required to assemble and install the fixed
mast.

Install Mast Butt and Top

See Figure 4-27 for the following procedure.
The mast butt, mast top, and boom hoist equalizer are
shipped assembled as shown in View A.
1. Unpin keeper plates (1, View B) and rotate them out of
the way (View C). On current production cranes, pin the
keeper plate to the shoulder screw (11) to retain the
keeper plate.
2. Using setup remote control, disengage mast connecting
pins (10, View C). With pins disengaged grease them.
See Section 5 of this manual.
3. Attach chain sling (3, View A) from assist crane to lifting
lugs (4) on mast butt (5) and mast top (6).
Grab hooks must be toward mast butt. Shorten both
rear legs of sling by 13 links to provide proper lifting
balance.
4. Hold mast supports (7, View E) so they cannot drop,
remove pins (8), and lower supports to erecting position.
Each mast support weighs approximately 200 lb (91 kg).
5. Store pins (8) in lugs on mast butt.
6. Remove alignment pins (9, View E) from storage and
install them in mast butt (View C).
Manitowoc
7. Lift mast butt and top into position over saddles in
rotating bed (View D).
8. Lower mast butt and top so alignment pins (9) rest in
saddles in rotating bed (View C).
9. Raise or lower mast sections to align connecting holes in
mast butt with holes in rotating bed.
10. Using setup remote control, engage mast connecting
pins (10, View C).
11. Engage keepers (1) with grooves in connecting pins and
install snap pins.
12. Remove alignment pins (9, View C) and store them on
mast supports (View F).
Do not support entire weight of mast butt and top on
alignment pins. Damage may result.
13. Lower mast butt and top until mast supports (7, View F)
engage rotating bed and lifting slings slacken.
14. Disconnect lifting slings.
15. Uncouple hydraulic hoses for Drum 4 in mast butt and
connect to couplers on rotating bed
H and I).
The quick couplers are arranged so the hoses can be
connected only one way.
NOTE On
corresponding couplers are tagged with numbers
(see
ensure proper hose connection.
16. Connect electric cables from Drum 4 to receptacles on
rotating bed
Published 12-05-17, Control # 032-23
SET-UP AND INSTALLATION
(Figure
current production cranes,
Figure 4-18, View L). Match numbers to
(Figure 4-18, View K).
4-18, Views
hoses and
4
4-43