Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 2000-2003 Approved Subaru Legacy 2000 2000 Service Manual MECHANICAL COMPONENTS SECTION STEERING SYSTEM MSA5TCD00L17520
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4-3 [W4A0] SERVICE PROCEDURE
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
1) Leakage from "a"
running, then make comparison of the suspected
The oil seal is damaged. Replace valve assembly
portion between immediately after and several
with a new one.
hours after this operation.
2) Leakage from "b"
3) Before starting oil leak repair work, be sure to
The torsion bar O-ring is damaged. Replace valve
clean the gearbox, hoses, pipes, and surrounding
assembly with a new one.
parts. After completing repair work, clean these
3) Leakage from "c"
areas again.
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.
24
SERVICE PROCEDURE [W4B1] 4-3
4. Control Valve (Power Steering Gearbox)
5) If leak is other than a, b, c, or d, and if oil is B: DISASSEMBLY
leaking from the gearbox, move the right and left
boots toward tie-rod end side, respectively, with the NOTE:
gearbox mounted to the vehicle, and remove oil This section focuses on the disassembly and reas-
from the surrounding portions. Then, turn the steer- sembly of control valve. For the inspection and
ing wheel from lock to lock 30 to 40 times with the adjustment and the service procedures for associ-
engine running, then make comparison of the ated parts, refer to "Steering Gearbox".
after this operation. 1. VALVE ASSEMBLY
(1) Leakage from "e"
The cylinder seal is damaged. Replace rack 1) Remove two bolts securing valve assembly.
bush with a new one.
(2) Leakage from "f"
There are two possible causes. Take following
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
comparison of the leaked portion between
immediately after and several hours after this
operation. S4M0154
CAUTION:
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