Subaru LEGACY 2002 Quick Reference Index page 460

Power Assisted System (Power Steering)
! FLOW CONTROL VALVE
The flow control valve consists of a sub-spool which is pushed to the right when the fluid pressure
rises as the engine speed increases (and consequently, the pump discharge rate becomes high-
er). When the sub-spool is shifted to the right, the variable orifice is narrowed, thus the discharge
rate is reduced.
(A) Engine speed low
(B) Engine speed high
POWER STEERING SYSTEM
(A)
(1)
(4)
(B)
(1)
(4)
PS-20
(2)
(3)
(2)
(3)
(1) Sub-spool
(2) To steering gearbox
(3) Variable orifice
(4) From vane pump
B4H1721B