UNDERCARRIAGE RT540E SERVICE MANUAL
8-38 Published 4-20-2015, Control # 502-01
Outrigger Control Valves
Description
There are four valve assemblies responsible for controlling
the outrigger system, the integrated outrigger/rear steer
valve, the front and rear outrigger control manifolds, and the
pilot operated check valves.
NOTE: For a more detailed description and maintenance
of the valves, refer to Valves in Section 2 -
HYDRAULIC and PRESSURE SETTINGS.
Pilot Operated Check Valve
The pilot operated check valves are located in the outrigger
jack port blocks. The check valve provides two functions; the
first function is a holding valve, the second function provides
a thermal relief of the jack.
Integrated Outrigger/Rear Steer Manifold
The integrated outrigger/rear steer valve is mounted on the
frame center section to the rear of the front axle. Refer to
Section 2 - HYDRAULIC and PRESSURE SETTINGS.
Outrigger Control Manifold
The front and rear outrigger control manifolds are located
on the respective outrigger boxes. Each manifold consists of
four 2-position, 2-way solenoid valves.
Reference Only
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