Manitowoc 2250 Service Maintenance Manual

Reference Only
INTRODUCTION 2250 SERVICE/MAINTENANCE MANUAL
1-66
Published 07-19-16, Control # 249-01
Rigging Winch Haul In
When the power button is pressed and rigging winch switch
is held in the DOWN (haul in) position, an input signal is sent
to the PC. The PC sends a 12 V output signal to the auxiliary
system’s disable-relief valve HS-12 that adjusts system
pressure to 276 bar (4,000 psi).
Hydraulic fluid enters the upper accessory valve and flows
through the variable output control valve HS-20 and
hydraulic quick disconnect to the lower accessory valve.
The rigging winch haul in solenoid valve HS-17 is enabled by
the PC to shift the valve in the selected position. Hydraulic
fluid leaves the accessory valve and enters the haul in side
of the winch motor to turn the drum to haul in wire rope at a
fixed speed. Return hydraulic fluid from the motor leaves the
accessory system valve and returns to the tank.
When the power button or rigging winch switch is released,
the PC sends a 0 V output to shift the spool of solenoid HS-
17 to the center position.
Crawler Frame Pins
See Figure 1-36 and Figure 1-40 for the following.
The following description is for engaging/disengaging the left
crawler frame pins. Operation of the right crawler frame pins
is the same as the left crawler frame pins.
With the engine running, power is available to the setup
remote control when the cable is connected at the air valve
junction box on the left side of the rotating bed.
Crawler Frame Pins Engage
When the power button is pressed and the left crawler frame
pins switch is held in the DOWN (engage) position, an input
M104193
Rigging Winch Haul In
Rigging Winch Pay Out
M104192
Auxiliary Pump
Fan Pump
To F a n
Circuit
Upper Accessory Valve
HS-17
HS-18
Lower Accessory Valve
x
Variable Output Valve
Suction
Manifold
Auxiliary Pump
Fan Pump
To F an
Circuit
Upper Accessory Valve
HS-17
HS-18
Lower Accessory Valve
x
Variable Output Valve
Suction
Manifold
FIGURE 1-39
0 to 57 L/min (0 to15 gpm)
0 to 57 L/min (0 to15 gpm)
Valve
Disable-Relief
Auxiliary System
HS12
Valve
Disable-Relief
Auxiliary System
HS12

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English