Subaru IMPREZA GD 2007 Series Manual page 3456

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POWER ASSISTED SYSTEM (POWER STEERING)
1) Lift up the vehicle.
2) If a fluid leak is found, clean the fluid completely
from the suspect area, and turn the steering wheel
30 to 40 times to the left and right from lock to lock,
with the engine running, and check again for leaks
immediately, and also after a few hours have
passed.
3) Cause and solution for oil leakage from "a"
The oil seal is damaged. Replace the valve assem-
bly with a new part.
4) Cause and solution for oil leakage from "b"
The torsion bar O-ring is damaged. Replace the
valve assembly with a new part.
5) Cause and solution for oil leakage from "c"
The oil seal is damaged. Replace the valve assem-
bly or oil seal with a new part.
6) Cause and solution for oil leakage from "d".
The pipe is damaged. Replace the faulty pipe or O-
ring.
7) Cause and solution for oil leakage from "g".
The hose is damaged. Replace the hose with a
new part.
8) If leak is other than a, b, c, d or g, or if oil is leak-
ing from gearbox, move the right and left boots to-
ward tie-rod end side, respectively, with the
gearbox mounted to the vehicle, and remove fluid
from surrounding portions. Then, turn the steering
wheel from lock to lock 30 to 40 times with the en-
gine running, then re-inspect the leaking area im-
mediately after and several hours after this
operation.
(1) Leakage from "e"
The cylinder seal is damaged. Replace the rack
bushing with a new part.
(2) Leakage from "f"
There are two possible causes. Perform the fol-
lowing step first. Remove the pipe assembly B
from the valve housing, and close the circuit us-
ing ST.
ST 926420000 PLUG
Turn the steering wheel from lock to lock 30 to
40 times with the engine running, then re-in-
spect the leaking area immediately after and
several hours after this operation.
• If leakage from "f" is noted again:
The oil seal of pinion and valve assembly is dam-
aged. Replace the pinion & valve assembly with a
new part. Or replace the oil seal and the parts that
are damaged during disassembly with new parts.
• If oil stops leaking from "f":
The oil seal of rack housing is damaged. Replace
the oil seal and parts that are damaged during dis-
assembly with new parts.
Steering Gearbox
F: ADJUSTMENT
1) Adjust the front toe.
<Ref. to FS-10, FRONT WHEEL TOE-IN, INSPEC-
TION, Wheel Alignment.>
Standard of front toe:
IN 3 — OUT 3 mm (IN 0.12 — OUT 0.12 in)
(1) Lock nut
2) Adjust the steering angle of the wheels.
Standard of steering angle:
Model 2.5i, OUTBACK, WRX
Inner wheel
Outer wheel
3) If the steering wheel spokes are not horizontal
when wheels are set in the straight ahead position,
or error is more than 5° on the periphery of the
steering wheel, correctly re-install the steering
wheel.
(1) 5° or less
4) If the steering wheel spokes are not horizontal
with vehicle set in the straight ahead position after
this adjustment, correct it by turning the right and
left tie-rods in the opposite direction from each oth-
er by the same angle.
PS-50
PS-00107
STI
34.5°±1.5° 32.9°±1.5°
30.3°±1.5° 28.5°±1.5°
(1)
PS-00513