Manitowoc Grove RT9130E-2 Service And Maintenance Manual

Grove Published 11-22-2016, Control # 345-12 2-47
RT9130E-2 SERVICE MANUAL HYDRAULIC SYSTEM
2
DOUBLE PILOT OPERATED CHECK VALVE
Description
The double pilot operated (PO) check valve Figure 2-27 is
located on the outside of the left superstructure side plate
behind the cab. It is used to hold or lock the cab tilt cylinder in
place. Oil flow is directed from the “V” ports to the “C” ports,
while blocking flow in the opposite direction. Flow is reversed
from “C” to “V” when pressure pilot oil is applied to the
opposite side “V” port.
Maintenance
Removal
1. Tag and disconnect the hydraulic lines from the valve.
Cap or plug all openings.
2. Remove the capscrews, flatwashers and lockwashers
securing the valve to the turntable and remove the valve.
Repair
1. Install new O-rings onto the check valve.
2. Lubricate the check valve and O-rings with clean
hydraulic oil.
3. Carefully install the check valve into the port block until
fully seated.
Installation
1. Install the valve to the turntable and secure with the
capscrews, flatwashers and lockwashers.
2. Test the check valve by operating the cab tilt cylinder.
Verify it extends and retracts without problems; verify
there is no leaking. Make repairs as needed.
CAUTION
Before installing new seals and rings, clean all surfaces
and carefully remove burrs and nicks. Parts displaying
excessive wear or damage should be replaced.
FIGURE 2-27
Hydraulic Schematic
C1
C2
6101-2
V1
V2
30 psi
C1
C2
V1
V2
6101-1

Manitowoc Grove RT9130E-2 Specifications

General

Brand	Manitowoc
Model	Grove RT9130E-2
Category	Construction Equipment
Language	English