Subaru Impreza 2002 Service Manual page 3094

6. OIL LEAKING
(1) Power cylinder
(2) Cylinder
NOTE:
If the gearbox is dismounted without confirming
where the leak is, it must be mounted again to lo-
cate the leak point.
1) Even if the location of the leak can be easily
found by observing the leaking condition, it is nec-
essary to thoroughly remove the oil from the sus-
pected portion and turn the steering wheel from
lock to lock about thirty to forty times with engine
running, then make comparison of the suspected
portion between immediately after and several
hours after this operation.
STEERING GEARBOX [LHD MODEL]
(3) Rack piston
(4) Rack axle
PS-51
POWER ASSISTED SYSTEM (POWER STEERING)
(5) Input shaft
(6) Valve housing
2) Inspect leakage from "a"
The oil seal is damaged. Replace the valve assem-
bly with a new one.
3) Inspect leakage from "b"
The torsion bar O-ring is damaged. Replace the
valve assembly with a new one.
4) Inspect leakage from "c"
The oil seal is damaged. Replace the valve assem-
bly or oil seal with a new one.
5) Inspect leakage from "d"
The pipe is damaged. Replace the faulty pipe or O-
ring.
S4M0153A