Oil Leaking Points; Oil Leak Check Procedure And Replacement Parts - Subaru SVX 1992 Manual

STEERING SYSTEM [W4A2] 4-3
4. Control Valve (Power Steer-
ing Gearbox)
This section focuses on the disassembly and reassem-
bly of control valve. For the inspection and adjustment
and the service procedures for associated parts, refer
to "Steering Gearbox (Power Steering System)" .
1 Pinion shaft
4 Rack piston
2 Gear box 5 Cylinder
3 Rack shaft 6 Power cylinder
The gearbox is integrated with a built-in control valve
The control valve and power cylinder are connected to
and power cylinder . The rack shaft is used as a power
each other by two pipes through which hydraulic oil
cylinder piston and a rotary control valve is located in
flows .
such a manner as to enclose the pinion shaft.
Fig. 107
A: CHECKING OIL LEAKING POINTS
1 . OIL LEAKING POINTS
a . If leak point is other than a, b, c, or d, perform check
(5) in 2) before dismounting gearbox ASSY from vehi-
cle. If gearbox ASSY is dismounted without confirming
where the leak is, it must be mounted again to locate
the leak point .
b. Even if the location of the leak can be easily found
by observing the leaking condition, it is necessary to
thoroughly remove the oil from the suspected portion
and turn the steering wheel from lock to lock about 30
to 40 times with engine running, then make compari-
son of the suspected portion between immediately
after and several hours after this operation.
c. Before starting oil leak repair work, be sure to clean
the gearbox ASSY, hoses, pipes, and surrounding
parts. After completing repair work, clean these areas
again .
2 . OIL LEAK CHECK PROCEDURE AND REPLACE-
MENT PARTS
Parts requiring replacement are described in the small-
est unit of spare parts including damaged parts and
spare parts damaged. In actual disassembly work,
accidental damage as well as inevitable damage to
some related parts must be taken into account, and
spare parts for them must also be prepared. However,
it is essential to pinpoint the cause of trouble, and limit
the number of replacement parts as much as possible.
1) Leakage from "a"
The oil seal is damaged. Replace valve ASSY with a new
one.
2) Leakage from "b"
The torsion bar O-ring is damaged . Replace valve ASSY
with a new one .
3) Leakage from "c"
The oil seal is damaged. Replace valve ASSY with a new
one.
4) Leakage from "d"
The pipe ASSY is damaged . Replace the faulty pipe
ASSY.
5) If leak is other than a, b, c, or d, and if oil is leaking
from the gearbox ASSY, move the right and left boots
toward tie-rod end side, respectively, with the gearbox
49