Terex TS14G, Maintenance Manual

Page: 199 / 376

Section 220-0130
SM 1747 2-99
1
SM - 2137
STEERING SYSTEM - Double Relief Valve
Fig. 1 - Exploded View of Double Relief Valve
DESCRIPTION AND OPERATION
Numbers in parentheses refer to Fig. 1.
The double relief valve is an oil by-passing device with
two spring loaded pistons which are set and sealed in
the relief valve cartridges.
The double relief valve is used to relieve shock loads
transmitted to the steering cylinders by the machine
striking a boulder, hole or other similar object. When
this occurs, the oil that is displaced, flows through the
cored passage of the flow reversing valve and into the
double relief valve. The excessive pressure unseats
the cartridge piston and feeds the pressurized oil to
the opposite steering cylinder which stabilizes the
steering.
7 - Poppet
8 - 'O' Ring
9 - 'O' Ring
10 - Plug
4 - 'O' Ring
5 - Poppet Plug
6 - Spring 1 - Valve Body
2 - Cartridge Assembly
3 - 'O' Ring
Courtesy of Machine.Market