wsm STW37 Workshop Manual page 377

STW34, STW37, STW40, WSM
Oil Flow
The oil from the power steering pump passes
through the regulating valve (3) and check valve (4), and
then flows to the power steering circuit.
The regulating valve (3) is provided to keep the inlet
pressure of the pressure reducing valve (5) to 30 kgf/cm
except when the power steering is operated.
When the bi-speed valve operates, the oil adjusted
with the reducing valve (5) to 18.5 kgf/cm
bi-speed valve through A port.
8-M7
HYDRAULIC SYSTEM
2
flows to the
(1) Power Steering Pump
(2) Regulator Valve Assembly
(3) Regulating Valve
(4) Check Valve
(5) Pressure Reducing Valve
(6) Poppet (Check Valve)
(7) Spring
(8) Relief Poppet
(9) Reducing Spool
(10) Ball
(11) Spring Receiver
(12) Adjusting Screw
(13) Adjusting Screw
A: A Port (To I-speed Valve)
B: B Port (To Steering
Controller)
P: P Port (From Pump)
R: R Port (To Pump)
9Y1211109HYM0005US0
KiSC issued 11, 2014 A
2