Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Forester 1999-2004 Approved Subaru Forester 1999-2000 MECHANICAL COMPONENTS SECTION Steering System MSA5T0125A27782
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SERVICE PROCEDURE [W4A2] 4-3
4. Control Valve (Power Steering Gearbox)
4. Control Valve (Power Steering Gearbox)
A: CHECKING OIL LEAKING POINTS
S4M0153A
(1) Power cylinder (3) Rack piston (5) Input shaft
(2) Cylinder (4) Rack axle (6) Valve housing
1. OIL LEAKING POINTS 2. OIL LEAK CHECK PROCEDURE AND
1) If leak point is other than a, b, c, or d, perform REPLACEMENT PARTS
the 5th step in "OIL LEAK CHECK PROCEDURE NOTE:
AND REPLACEMENT PARTS" before dismounting Parts requiring replacement are described in the
gearbox from vehicle. If smallest unit of spare parts including damaged
gearbox is dismounted without confirming where parts and spare parts damaged. In actual disas-
the leak is, it must be mounted again to locate the sembly work, accidental damage as well as inevi-
leak point. table damage to some related parts must be taken
2) Even if the location of the leak can be easily into account, and spare parts for them must also
found by observing the leaking condition, it is nec-
be prepared. However, it is essential to pinpoint the
essary to thoroughly remove the oil from the sus-
cause of trouble, and limit the number of replace-
pected portion and turn the steering wheel from
ment parts as much as possible.
lock to lock about 30 to 40 times with engine
running, then make comparison of the suspected 1) Leakage from "a"
portion between immediately after and several The oil seal is damaged. Replace valve assembly
hours after this operation. with a new one.
3) Before starting oil leak repair work, be sure to 2) Leakage from "b"
clean the gearbox, hoses, pipes, and surrounding The torsion bar O-ring is damaged. Replace valve
parts. After completing repair work, clean these assembly with a new one.
areas again. 3) Leakage from "c"
The oil seal is damaged. Replace valve assembly
or oil seal with a new one.
4) Leakage from "d"
The pipe is damaged. Replace the faulty pipe or
O-ring.
5) If leak is other than a, b, c, or d, and if oil is
leaking from the gearbox, move the right and left
boots toward tie-rod end side, respectively, with the
gearbox mounted to the vehicle, and remove oil
from the surrounding portions. Then, turn the steer-
ing wheel from lock to lock 30 to 40 times with the
25
4-3 [W4B0] SERVICE PROCEDURE
4. Control Valve (Power Steering Gearbox)
engine running, then make comparison of the 2) Carefully draw out input shaft and remove valve
leaked portion immediately after and several hours assembly.
after this operation.
(1) Leakage from "e"
The cylinder seal is damaged. Replace rack
bush with a new one.
(2) Leakage from "f"
There are two possible causes. Take the follow-
ing step first. Remove the pipe assembly B from
the valve housing, and close the circuit with ST.
ST 926420000 PLUG
Turn the steering wheel from lock to lock 30 to
40 times with the engine running, then make S4M0155B
comparison of the leaked portion between
immediately after and several hours after this (1) Valve ASSY
operation. 3) Slide dust cover out.
CAUTION:
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