Manitowoc 2250 User Manual

Reference Only
SETUP AND INSTALLATION 2250 OPERATOR MANUAL
4-114
Published 06-24-16, Control # 241-01
Lower Boom and Jib
See Figure 4-57 for the following procedure.
1. Lower the boom until the jib point is approximately 0,3 m
(1 ft) from contacting the ground.
2. Disconnect the jib stop pendants (6 or 7, View D or F)
from the lugs on the jib butt.
3. Lower the boom and the jib onto blocking at the ground
level.
4. Disconnect the block-up limit electrical cable at the
chord in the boom point and at the junction box in the jib
point. Store the cable on the jib butt.
Connect the block-up limit electrical cable to the
terminator plug on the junction box in the boom points
(see Block-Up Limit Adjustment in Section 5 of the
Service Manual).
5. Remove the load line, block-up limit chains, and weights
from the jib.
Lower Jib Strut
See Figure 4-57 for the following procedure.
1. Using an assist crane or a forklift truck, lift the jib point
approximately 0,9 m (3 ft) off the ground and block it
(see View A).
Raising the jib point provides enough slack to allow
removing the backstay pendant pins.
2. Using the appropriate slings, attach a hook from an
assist crane to the top of the jib strut (see View A).
3. Disconnect the backstay pendants and links
(see View B or C) from the backstay links (heavy lift
boom top) or the lugs on the transition insert (long
reach boom top). Lay the pendants on the ground along
the boom top.
4. Slowly rotate the jib strut forward over the center with the
assist crane and lower the strut onto the jib butt.
NOTE: Avoid lifting the jib butt/boom top in the process.
Use extreme caution not to side load the strut while
lowering.
5. Disconnect the assist crane from the jib strut.
6. Remove the blocking from the jib point and lower the jib
point to the ground.
Remove Backstay Pendants
See Figure 4-57 for the following procedure.
1. Disconnect the basic backstay pendants (5) from the
spreader (4, View B).
2. Coil the backstay pendants and store the pendants and
links for future use.
NOTE: The spreader can be stored on the jib strut for
shipping.
Remove Jib Pendants
See Figure 4-57 for the following procedure.
1. Disconnect the jib pendants (P1 or P2) from the links (1)
on the jib strut (3) and lugs on the jib top.
2. Coil the jib pendants and store them for future use.
Remove Jib Top and Inserts
See Figure 4-56 for the following procedure.
1. Unpin and remove the jib top from the jib butt or the jib
insert (see Views C and D).
2. Unpin and remove the jib inserts from the jib butt, as
required (see Views C and D).
Remove Jib Butt
See Figure 4-57 for the following procedure.
1. Remove the jib stop pendants, links, and struts from
between the boom top and the jib butt (see View D or F).
2. Support the jib butt with the assist crane.
3. Unpin and remove the jib butt from the boom top
(Figure 4-56
, View B).
CAUTION
Jib Stop Damage!
Do not allow the jib point to touch the ground until the jib
stop pendants are disconnected.
WARNING
Falling Strut Hazard!
Avoid death or serious injury. Do not disconnect the
backstay pendants until the strut is supported and the
pendants are slack.

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English