Manitowoc 2250 Service Maintenance Manual

Reference Only
HOISTS 2250 SERVICE/MAINTENANCE MANUAL
5-14
Published 07-19-16, Control # 249-01
Adjusting the Brake Release
Perform the following adjustment only if a new or rebuilt
actuator or regulator has been installed or if a new lining or
band has been installed.
NOTE: The corresponding drum brake must be properly
adjusted before performing this adjustment.
1. Lower the load block, weight ball, or bucket to the
ground so the wire rope is slack on the drum being
serviced.
2. If equipped with three drums, use the drum selector to
select the desired rear drum, right or left.
3. Fully release the drum working brake (brake pedal up
fully).
4. Turn on Free Fall and turn off the drum park for the drum
being serviced. The drum park brake will release.
5. Push in the regulator adjusting knob (Figure 5-12
) for
the brake being adjusted.
6. Turn the knob clockwise to increase pressure or
counterclockwise to decrease pressure until the gauge
reads 4,8 bar (70 psi) as viewed from the knob end. This
is the initial setting only.
7. Adjust the regulator until the distance from the bottom of
the actuator to the top of the rod end is 25,4 mm (1.0 in)
(Figure 5-11
).
8. If the proper dimension is not obtained, turn the
regulator knob clockwise to decrease the dimension or
counterclockwise to increase the dimension (directions
viewed from knob end).
9. Pull out the knob to lock the regulator setting when the
proper dimension is obtained.
25,4 mm (1.0 in)
Brakes Released
192773-1
FIGURE 5-11
FIGURE 5-12
Rear or Right Rear
Drum Park Brake
Regulator
P805
Knob
Left Rear Drum
Park Brake
Regulator
Front Drum Park
Brake Regulator
(if equipped)
Left Side of Rotating Bed
Front Drum Park
Brake Solenoid Valve
(if equipped)
Rear or Right Rear
Drum Park Brake
Solenoid Valve
Left Rear Drum
Park Brake
Solenoid Valve
Knob
Rear Drum Park
Brake Regulator
Front Drum Park
Brake Regulator
Front Drum Park
Brake Solenoid
Valve
Rear Drum
Park Brake
Solenoid Valve
Knob
Knob
P805a
Left Side of Rotating Bed
(with independent drum drive)

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English