Manitowoc Grove RT540E Service Maintenance Manual

Published 4-20-2015, Control # 502-01 2-45
RT540E SERVICE MANUAL HYDRAULIC SYSTEM
2
GROVE
INTEGRATED OUTRIGGER/REAR STEER
MANIFOLD
Description
The integrated outrigger/rear steer manifold (Figure 2-24)
controls the outrigger and rear steer circuit. The valve is
mounted on the frame center section to the rear of the front
axle.
The manifold is made up of two sections; an inlet section and
a working section.
The inlet section contains a 17,200 kPa/172 bar (2500 psi)
pressure reducing valve and a load sense shuttle valve. The
solenoid valve is a normally closed two position two way
valve. It unloads the load sense line to the pump to ensure
the pump is de-stroked during engine start.
The rear steer section contains a three position four way
solenoid controlled directional valve that controls left and
right rear steer. The rear steer cylinders are positive locked
by the double pilot operated check valves integral to the work
ports.
The outrigger section contains a three position four way pilot
controlled directional valve, two check valves, two load
sense shuttle valves, and two, two position three way
solenoids for pilot control of the outrigger extend and retract
function.
Maintenance
Removal
1. Tag and disconnect the electrical connectors to the
valve.
2. Tag and disconnect the hydraulic hoses from the valve.
Cap or plug the lines and ports.
3. Remove the capscrews and washers securing the valve
to the frame bracket. Remove the valve.
Installation
1. Secure the valve to the frame bracket with the washers
and capscrews. Torque the capscrews see Fasteners
and Torque Values, page 1-11.
2. Connect the hydraulic hoses to the ports on the valve as
tagged during removal.
3. Connect the electrical connectors to the valve as tagged
during removal.
4. Verify operation as follows:
• Operate the rear steer left and right to verify smooth
operation.
• On outriggers, swing over the front outriggers to ensure
the oscillation cylinders lockout.
• Remove the electrical connection from the oil cooler
motor two position three-way solenoid valve to verify
that it operation.
5. Check valve and hoses for leaks. Make repairs as
needed.
Reference Only

Manitowoc Grove RT540E Specifications

General

Brand	Manitowoc
Model	Grove RT540E
Category	Construction Equipment
Language	English