Manitowoc Grove GRT9165, Service Manual

Page: 107 / 302

2-65
GROVE
GRT9165 SERVICE MANUAL HYDRAULIC SYSTEM
2
Published 10-01-2020 Control # 699-00
Checking/Setting Outrigger Pressure, Rear
Steer, and Suspension Raise
Use the following procedures to check and set outrigger
pressure, rear steer, and suspension raise settings.
1. With the engine off, install a pressure check diagnostic
coupler (such as Parker PD240) with gauge onto the
diagnostic nipple at the LS port (1, Figure 2-33) on the
main carrier manifold.
Outrigger Beam Extend
1. Start engine and idle. Make sure that the outrigger
beams can be fully extended safely. Extend any
outrigger beam until full stroke of the cylinder is
achieved and hold. Slowly accelerate the engine to full
RPM. The reading at LS port (1, Figure 2-33) should
read the value cited in Table 2-3. If it is not, use the
service tool as follows to adjust:
a. In the Manitowoc Crane Tool, open Tools > EEprom
> View Parameters > Cabin > Solenoid PWM
Control (carrier) > Pressure Sol – Outrigger Beams
Extend Target. In the params row, increase the
value to increase the pressure or decrease the
value to decrease the pressure (adjustment by 10
mA increments is suggested). Make sure to write
the column to “active settings”. Repeat this step until
the pressure is achieved. If the value needs
adjusted by more than 100 mA, contact your Grove
Crane distributor or Manitowoc Crane Care.
b. After the pressure is achieved, make sure to “Save
active to customer” and “Save active to factory.”
Outrigger Beam Retract
1. Start engine and idle. Retract any outrigger beam until
full stroke of the cylinder is achieved and hold. Slowly
accelerate the engine to full RPM. The reading at LS
port (1, Figure 2-33) should read the value cited in
Table 2-3. If it is not, use the service tool as follows to
adjust:
a. In the Manitowoc Crane Tool, open Tools > EEprom
> View Parameters > Cabin > Solenoid PWM
Control (carrier) > Pressure Sol – Outrigger Beams
3
4
5
1
2
6
Main Carrier Manifold
1 LS Port
2 G4 Port
3 Transmission Fan Coil
4 Pressure Reducing Valve
5 G1 Port
6 G3 Port
FIGURE 2-33
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