Oil Pump & Reservoir Tank - Subaru SVX 1992 Manual

STEERING SYSTEM [M203) 4-3
3. OIL PUMP Fr RESERVOIR TANK
Section A-A
C4-00 I
Fig. 13
The oil pump is belt-driven from the engine . The oil flow
is controlled in response to engine speed so that an
adequately "heavy" steering effort is maintained during
high-speed operation .
The oil pump is a vane type . It is integrated with an oil
reservoir and houses the flow control and relief-valves .
1 ) Vane pump
The vane pump consists of a rotor, cam rings, and ten
vanes .
When the rotor rotates, the vane located in each groove
of the rotor is radially swung out by centrifugal force
and pressed against the cam ring . The tip of the vane
slides along the inner oval wall of the cam ring so that oil
is delivered to the chamber formed by the rotor, cam
ring and vane by way of a pea-shaped groove . Oil from
the chamber is discharged into the oil circuit via the
discharge port.
Vane
suction ; :."" . Discharge
a~ I
Rotor
Suction
Discharge
Cam ring
Vane pump B4.
Fig . 14
9