Manitowoc 2250 User Manual

Reference Only
Manitowoc Published 06-24-16, Control # 241-01 4-67
2250 OPERATOR MANUAL SETUP AND INSTALLATION
4
Installing Upper Counterweight (Series 3)
See Figure 4-35 for more information.
NOTE: Install the carbody counterweights before installing
the upper counterweight. See Installing Carbody
Counterweights (Series 3) on page 4-63 for
installation instructions.
1. Position the crane so it is in line and centered with the
assembled counterweight (see View G).
2. Fully lower the gantry. See Gantry Raising and Lowering
(with Boom Butt Handling Cylinder) on page 4-50.
3. Lower the lifting links from the stored position
(see View H).
4. Attach the lifting pendants (stored on the side of the
center box) to the lugs on the gantry (see View H).
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 center box with the switch on
the setup remote control until the gantry raising cylinders
are fully extended (see View B).
The center box will tilt slightly forward with the top
attaching holes on the center box ahead of the lower
holes.
NOTE: If the upper center box attaching holes are above
the mating holes in the rotating bed, lower the
gantry raising cylinders until the holes are aligned.
7. Engage the upper counterweight attaching pins (see
View A). Visually check that the pins are engaged.
8. Slowly lower the gantry until the lifting pendants are
slack.
NOTE: Make sure the lifting links do not bind against the
counterweight components.
9. Engage the lower counterweight attaching pins (see
View A). Visually check that the pins are engaged.
10. Unpin the lifting pendants from the gantry and store
them on the center box (Figure 4-32
, View A).
11. Lower the gantry until the cylinders are fully retracted.
NOTE: Make sure the lifting links do not bind against the
counterweight components.
12. Travel the machine so it is in line and centered with the
lifting frames on the lower tray (see View E).
13. Pin the lifting links to the front hole in the lifting frame
(see View F).
14. Raise the gantry and remaining counterweight assembly
with the switch on the setup remote control until the pin
holes in the lower tray line up with the holes in the center
box. Install the pins and washers (see View C).
15. Slowly lower the gantry until the lifting links are loose in
the slots.
Hooked lugs on the front of the lower tray will be
engaged with the counterweight support lugs on the
center box (Figure 4-36
).
16. Unpin the lifting links from the lifting frame and store the
lifting links on the gantry (see View H).
17. Fully raise the gantry. See Gantry Raising and Lowering
(with Boom Butt Handling Cylinder) on page 4-50.
18. The boom butt can now be attached to the boom and the
boom assembly.
Removing Upper Counterweight (Series 3)
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 frames.
Links must be pinned to the front hole in the lifting frame
(Figure 4-35
, View F).
CAUTION
Link Damage!
The handling links and lower tray links must be in line and
vertical prior to raising the counterweight. Otherwise, the
links can be damaged.
FIGURE 4-36
Center Box
Hooked Lug on
Lower Tray
Counterweight
Support Lug

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English