wsm B2420 - Oil Flow

STEERING
B2420, WSM
7-M4
(3) Oil Flow
Neutral Position
When the steering wheel is not turned, there is no relative displacement between stub shaft (7) and worm shaft
(3). And spool part of the stub shaft (7) and sleeve (5) are placed in the neutral position.
Therefore, pressure-fed oil from pump flows to return line through the clearance between spool and sleeve. As a
result pressure in the cylinder does not rise, so the front wheels keep the direction.
9Y1210436STM0004US0
(1) Sector Gear Shaft
(2) Rack (Piston)
(3) Worm Shaft
(4) Torsion Bar
(5) Sleeve
(6) Valve Housing
(7) Stub Shaft
(A) From Pump
(B) Return to Suction Line
P: Pump Port
T: Return Port
L: Cylinder L Port
R: Cylinder R Port
KiSC issued 06, 2012 A