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Reference
Only
Manitowoc
Published 01-08-13, Control # 049-05
4-23
2250 MAX-ER 2000 OPERATOR’S MANUAL
SET-UP AND INSTALLATION
4
Install Wheeled Counterweight Assembly
Before attaching wheeled counterweight assembly to 2250,
review capacity charts to determine radius required for loads
to be lifted including raising the boom.
If desired the 2250 with mast raise and boom installed can
be used to assemble the wheeled counterweight assembly.
Operate within 0 lb (0 kg) counterweight column of MAX-
ER Capacity Chart. If the 2250 is not used, an assist crane
is required. The weight of the trailer is approximately 83,000
lb (37 650 kg).
Trailer can tip or be structurally damaged if pins and axle
wedges are not in correct position during installation and
removal procedures. See Figure 4-9 for correct pin and
wedge positions.
1.
Lift wheeled counterweight trailer from transport trailer
and place on ground in assembly area.
Four triangular shaped lifting holes are provided in top of
counterweight bed.
2.
Assemble trailer arm (Figure 4-10):
a.
For 50 ft (15,2 m) radius, pin two 10 ft (3,0 m) inserts
together and to adapter (View C).
b.
For 40 ft (12,2 m) radius, pin one 10 ft (3,0 m) insert
to adapter.
c.
For 30 ft (9,1 m) radius, only the adapter is used.
d.
Lift assembled trailer arm inserts and adapter into
position and pin to tongue on front trailer (View B).
Pin heads must face out to prevent tire damage.
If trailer is standing on tires, support inserts on
blocking so trailer cannot tip over.
3.
Position rear of 2250 so it is centered in line with trailer
and holes in crane counterweight are aligned with
connecting holes in adapter (Figure 4-10, View C).
4.
Connect hydraulic hoses from trailer (Figure 4-11, View
D) to quick connect couplers on crane (Figure 4-11,
View C).
DANGER
Trailer Tipping Hazard!
•
Support trailer on a firm level uniformly supporting
surface in either of following positions when it is
disconnected from crane:
-
Extend jacks to level trailer and install wedges.
This position must be used if counterweights
and arm inserts are installed.
-
Rotate wheels to CRAB position, install wedges,
and block tires so trailer cannot roll. This is
shipping position and can be used only on
job site when counterweights are removed. If
arms are installed, wheels must be blocked.
•
Install wedges whenever trailer is disconnected from
crane — whether supported on jacks or on tires.
•
Install pins in proper position prior to jacking or
performing other procedures. See Figure 4-9 for
correct pin and wedge positions.
•
Make sure jacking surface supports weight of trailer
and counterweight and provides necessary traction to
prevent jacks from sliding under load.
•
Operate jacks slowly and smoothly so trailer remains
as level as possible while jacking.
A1152
View A
Crane
Counterweight
Lug
Trailer Arm
Insert
Pin with Collars
(typical)
Pin with Collar
(typical)
View C
FIGURE 4-10
Pin with Collar
(typical)
Trailer Arm
Insert
View B
Trailer
Trailer Arm
Insert
Radius
40 ft (12,2 m) Radius
Shown