Manitowoc 2250 User Manual

Reference Only
SETUP AND INSTALLATION 2250 OPERATOR MANUAL
4-102
Published 06-24-16, Control # 241-01
Removing Extended Upper Boom Point
Lower Boom
See Figure 4-53 for the following procedure.
1. Lower the boom until the extended upper boom point is
approximately 305 mm (1 ft) from contacting the ground.
2. Disconnect the block-up limit electrical cable in the
extended upper boom point and at the junction boxes.
Store the cable.
3. Remove the load line and the block-up limit chains and
weights from the upper boom point.
4. Disconnect the upper boom point stop pendants from
the lower boom point lugs (see View C).
5. Lower the boom and the extended upper boom point
onto blocking at ground level.
Lower Extended Upper Boom Point Strut
See Figure 4-53 for the following procedure.
1. Using the appropriate slings, attach the hook from the
assist crane to the top of the extended boom point strut
(see View A).
2. Slowly bring the strut back with the assist crane until the
backstay basic pendants (P2) are slack and can be
unpinned from the backstay pendants (P3, View A).
Be careful not to lift the boom top or the extended upper
boom point.
NOTE: Use extreme caution not to side load the strut.
3. Disconnect the backstay basic pendants (P2) from the
backstay pendants (P3). Lay the backstay pendants on
the ground along the boom.
4. Slowly bring the strut forward with the assist crane and
lower it onto the upper point butt (Figure 4-52
, View E).
IMPORTANT Use extreme caution not to side load the strut
while lowering:
5. Disconnect the assist crane from the strut.
Remove Pendants
See Figure 4-52 for the following procedure.
1. Disconnect the backstay pendants (P2) from the
spreader (4, View E).
2. Disconnect the pendants (P3) and links (L4, View B).
3. Coil the backstay pendants and store the pendants and
links for future use.
Remove Spreaders
See Figure 4-52, Views C and E, for the following procedure.
NOTE: An assist crane will be needed to remove the
spreaders.
1. Unpin and remove the spreader (4) from the links (L2).
2. Unpin and remove the spreader (3) from the links (L1).
3. Unpin and remove the links (L1 and L2).
Remove Extended Upper Boom Point
See Figure 4-51 for the following procedure.
1. If desired, unpin and remove the extended upper boom
point top from the upper boom point butt (see Views C
and E).
2. Unpin and remove the extended upper boom point from
the boom top (see View B).
DANGER
Collapsing Upper Boom Point Hazard!
To prevent death or serious injury, do not stand on, inside,
or under the extended upper boom during disassembly.
Always stand on the outside of the extended upper boom
point when removing the connecting pins.
Support the extended upper boom point properly before
removing the pins. Block sections at the connection
points.
CAUTION
Boom Point Stop Damage!
Do not allow the extended upper boom point to touch the
ground until the extended upper boom point stop
pendants are disconnected.
WARNING
Falling Strut Hazard!
Prevent possible 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