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Published 10-01-2020 Control # 699-00
HOIST AND COUNTERWEIGHT GRT9165 SERVICE MANUAL
HOIST CONTROL VALVES
Description
NOTE: For more detailed information, refer to Valves,
page 2-21.
Hydraulic Hoist Motor Control Valve
The hydraulic hoist motor control valve is mounted on the
hoist motor and is designed to provide an even flow of oil to
the hoist motor in both directions. This is a different valve
than the hoist brake valve that applies and releases the
hydraulic piston and hydraulic cylinder.
Hoist Directional Control Valve
The hoist directional control valve is used to control the
operation of the hoist. It is a four-way, pilot operated valve
and is mounted on the right side of the turntable.
REMOVABLE COUNTERWEIGHT
Counterweight is installed and removed using hydraulic
cylinders controlled by a counterweight controls in the ODM
or remote control. Hydraulic cylinders and locking pins hold
the counterweight assembly in place.
For more information about assembling, removing and
installing the counterweight, see the Operator Manual.
FIGURE 5-2 continued
8669-1
2
DANGER
Falling counterweight can crush and cause death or
serious injury.
Ensure all mounting pins are properly installed and
locked, during and after operating the counterweight
removal system.
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