Impreza Wagon FWD F4-1820cc 1.8L SOHC (1995)
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Steering Gear: Service and Repair
Control Valve
Checking Oil Leaking Points
NOTE: This section focuses on the disassembly and reassembly of control valve. For the inspection and adjustment and the service procedures
for associated parts, refer to "Steering Gearbox".
CHECKING OIL LEAKING POINTS
1. OIL LEAKING POINTS
1) If leak point is other than a, b, c, or d, perform check step 5 in [W4A2] before dismounting gearbox from vehicle. If gearbox is dismounted
without confirming where the leak is, it must be mounted again to locate the leak point.
2) 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 comparison of the
suspected portion between immediately after and several hours after this operation.
3) Before starting oil leak repair work, be sure to clean the gearbox, hoses, pipes, and surrounding parts. After completing repair work, clean
these areas again.
2. OIL LEAK CHECK PROCEDURE AND REPLACEMENT PARTS
NOTE: Parts requiring replacement are described in the smallest 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 assembly with a new one.
2) Leakage from "b"
The torsion bar 0-ring is damaged. Replace valve assembly with a new one.
3) Leakage from "c"
The oil seal is damaged. Replace valve assembly with a new one.
4) Leakage from "d"
The pipe is damaged. Replace the faulty pipe or 0-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 steering wheel from lock to lock 30 to 40
times with the engine running, then make comparison of the leaked portion immediately after and several hours after this operation.
(1) Leakage from "e"
The cylinder seal is damaged. Replace rack bush with a new one.
(2) Leakage from "f"