Manitowoc Published 06-24-16, Control # 241-01 4-63
2250 OPERATOR MANUAL SETUP AND INSTALLATION
counterweight. See Installing Carbody Counterweights
(Series 2) on page 4-62 for installation instructions.
2. Position the crane so it is in line and centered with the
assembled counterweight (see View B).
3. Fully lower the gantry. See Gantry Raising and Lowering
(with Boom Butt Handling Cylinder) on page 4-50.
4. Lower the lifting links from the stored position and pin
them to the counterweight lifting frame. Links must be
pinned to the rear hole in the lifting frame (see View A).
5. Disengage the upper and lower counterweight attaching
pins (see View A) with the switch on the setup remote
control. Switches for the pins must be held in the
disengaged position until the counterweight is in
position.
6. Raise the gantry and the counterweight assembly with
the switch on the setup remote control until the gantry
raising cylinders are fully extended (see View D).
The counterweight will tilt slightly forward with the top
attaching holes on the center counterweight box ahead
of the lower holes.
NOTE: If the upper counterweight attaching holes are
above the mating holes in the rotating bed, lower
the gantry cylinders until the holes are aligned.
7. Engage the upper counterweight attaching pins (see
View C). Visually check that the pins are engaged.
8. Slowly lower the gantry until the lifting links are loose in
their slots.
9. Engage the lower counterweight attaching pins (see
View C). Visually check that the pins are engaged.
10. Unpin the lifting links from the lifting frame and store the
lifting links on the gantry (see View E).
11. Fully raise the gantry. See Gantry Raising and Lowering
(with Boom Butt Handling Cylinder) on page 4-50.
12. The boom butt can now be attached to the boom and the
boom assembly.
Removing Upper Counterweight (Series 1 and 2)
See Figure 4-34 for more information.
Remove the upper counterweight before removing the
carbody counterweights.
1. Fully lower the gantry and remove the lifting links from
the stored position.
2. Pin the lifting links to the counterweight lifting frame.
Links must be pinned to the rear hole in the lifting frame
(see View A).
3. Disengage the lower counterweight attaching pins
(see View C).
4. Raise the gantry and counterweight until the
counterweight is supported by the lifting links and the
upper attaching pins are loose in the slots.
5. Disengage the upper attaching pins (see View C).
Keep the pins disengaged until the center box is clear of
the rotating bed.
6. Lower the gantry until the counterweight rests on the
ground.
7. Continue lowering the gantry until the lifting links are
loose in the slots.
8. Unpin the lifting links from the lifting frame. Raise the
lifting links and store them on the gantry (see View E).
9. Fully raise the gantry. See Gantry Raising and Lowering
(with Boom Butt Handling Cylinder) on page 4-50.
Installing Carbody Counterweights (Series 3)
See Figure 4-33 for the following procedure.
Carbody counterweights are required for the Series 3
configuration. Install the carbody counterweights before
installing the crane counterweight.
1. Using the assembly block and the 4-leg chain sling from
the 2250, lift the center box into position at either end of
the carbody.
2. Boom, hoist, and swing as required to engage the slots
in the top of the center box with the hooks on the
carbody (see View A).
3. Lower the center box until the bottom connecting holes
line up.
4. Make sure to install the cotter pins to retain the
connecting pins.
5. Lift the side box into position (see View B) and pin it to
the center box.
CAUTION
Link Damage!
Handling links and the lower tray links must be in line and
vertical prior to raising the counterweight. Otherwise, the
links can be damaged.
CAUTION
Boom Butt Damage!
If the boom butt is being used to install carbody
counterweights, do not raise the boom butt to the point
that the physical boom stops bottom out. The boom stop
tubes and butt will be damaged.
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