Manitowoc 2250 Service And Maintenance Manual

Reference Only
Manitowoc Published 11-06-15, Control # 040-13 6-1
2250 SERVICE/MAINTENANCE MANUAL SWING
6
SECTION 6
SWING
MANUAL RELEASE OF SWING BRAKE AND
LOCK
See Figure 6-1 for the following procedure.
NOTE: All references to the swing lock are for past
production only. On current production cranes the
swing lock has been disabled and the hydraulic
swing lock ports are plugged.
The hydraulic swing brake and hydraulic swing lock must be
released when the swing planetary is removed and
reinstalled to allow alignment of the gear teeth in the swing
shaft with the teeth in the ring gear.
Figure 6-1
shows the swing planetary and the type of swing
lock.
Manual Release Procedure
Hydraulic hand pumps with pressure gauge are needed to
manually release the swing brake and swing lock.
1. Disconnect hoses from fitting at brake release port and,
if equipped, at swing lock out port.
2. Attach hand pump to each port — brake release and
swing lock out.
3. Pressurize brake and swing lock to 350 psi (24 bar).
4. Proceed to remove or install swing planetary.
5. Relieve pressure and remove hand pumps.
WARNING
Unexpected Crane Movement!
Crane can swing suddenly when swing brake is released.
Before releasing swing brake, secure crane by lowering
boom onto blocking at ground level to prevent sudden
uncontrolled swinging.
The procedure given in this section is for servicing
purposes only. Swing brake and swing lock must be fully
operational when operating crane.
CAUTION
Avoid damage to parts!
Do not exceed 350 psi (24 bar) pressure when releasing
swing brake or swing lock.
FIGURE 6-1
P899
Brake Release Port
(06 ORS Fitting)
Swing Lock “Out” Port
with Inside Planetary
(06 ORS Fitting)

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English