Manitowoc Published 06-24-16, Control # 241-01 4-105
2250 OPERATOR MANUAL SETUP AND INSTALLATION
BOOM HANDLING WITH INTERMEDIATE
GANTRY POSITION
General
The intermediate gantry position provides the minimum
clearance for traveling with the boom by lowering the crane’s
overall height to 7 m (23 ft).
• See Figure 4-56
for the boom length and suspended
weight limitations.
• See Gantry Raising and Lowering (with Boom Butt
Handling Cylinder) on page 4-50 for the raising and
lowering instructions.
NOTE: For additional boom handling instructions, see the
Boom Rigging Assembly drawing.
Machine Equipment
The crane must be equipped as follows to travel with the
gantry in the intermediate position:
• 4,0 m (13 ft 1 in) long hold-down pendants and links
• No more than Series 1 counterweight installed
Preparing Crane for Travel
See Figure 4-56 for the following procedure.
1. Position the crane on a firm, level surface.
2. Lower the boom onto blocking at ground level.
3. Reduce the boom to the desired length listed.
4. Fully lower the gantry. See Raising and Lowering Gantry
with Fully Rigged Boom on page 4-55.
5. Perform the following steps on both sides of the gantry.
a. Using the pin (1), pin the links (2) to the
counterweight adapter (see View C).
b. Open the storage strap on the backhitch leg (see
View B) and lower the hold-down pendant from the
storage position.
c. Using the pin (3), pin the hold-down pendant to the
links.
d. Make sure to install and open the cotter pins.
6. Fully extend the gantry raising cylinders to raise the
gantry. (See Raising and Lowering Gantry with Fully
Rigged Boom on page 4-55.
7. Slowly boom up. The gantry will rise until the hold-down
pendants are taut, then the boom will rise.
NOTE: Avoid shock loading the hold-down pendants.
8. Raise the suspended load, if any, off the ground.
Traveling
1. Travel only on a firm, uniformly supporting surface that is
level to within 1% grade.
NOTE: The boom may be raised higher than the height of
the gantry if required for maneuvering (for
example, turning a corner).
2. If traveling with a suspended load, keep the load off the
ground.
NOTE: Do not drag the load on the ground.
If necessary, carry the load on a transport vehicle with
sufficient capacity for the weight of the suspended load.
3. Do not travel faster than 0,8 km/h (1/2 mph).
4. Perform all travel functions—starting, turning, and
stopping—slowly and smoothly to avoid shock loading
the boom and gantry hold-down pendants.
DANGER
Falling Boom Hazard!
Avoid death or serious injury. Damage to, or structural
failure of, the hold-down pendants or gantry may cause
the boom to fall when the gantry is in the intermediate
position:
• Boom length must not exceed 42,7 m (140 ft)
• Weight of the load must not exceed the maximum
allowed for length of the boom
• Hold-down pendants must not be shock loaded
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