Manitowoc 2250 Service Maintenance Manual

Reference Only
Manitowoc Published 07-19-16, Control # 249-01 1-65
2250 SERVICE/MAINTENANCE MANUAL INTRODUCTION
1
Rigging Winch
See Figure 1-36 and Figure 1-39 for the following.
The optional rigging winch is located in the boom butt.
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.
Rigging Winch Pay Out
When the power button is pressed and the rigging winch
switch is held in the UP (pay out) 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 payout solenoid valve HS-18 is enabled by
the PC to shift the valve in the selected position. Hydraulic
fluid leaves the accessory valve and enters the payout side
of the winch motor to turn the drum to pay out 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-
18 to the center position.
Boom Butt Handling Cylinder Extend
M104190
Suction
Manifold
Auxiliary Pump
Fan Pump
To F a n
Circuit
Upper Accessory Valve
HS-16
HS-15
Lower Accessory Valve
x
M104191
Suction
Manifold
Auxiliary Pump
Fan Pump
To F an
Circuit
Upper Accessory Valve
HS-16
HS-15
Lower Accessory Valve
x
Variable Output Valve
Variable Output Valve
Boom Butt Handling Cylinder Retract
FIGURE 1-38
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