SUBARU LEGACY 1995 Service Repair Manual

Installation
1) Fit pinion and valve assembly into valve housing.
NOTE:
Apply ATF DEXRON II to outer diameter surface of input
shaft and outer surface of valve body seal ring, and pay
special attention not to damage seal when inserting pinion
and valve assembly.
G4M0149
2) Secure valve assembly to ST1 and ST2.
3) Put ST3 over pinion, and insert oil seal, then force-fit oil
seal into housing using ST4.
NOTE:

Apply ATF DEXRON II to oil seal and ST3, being care-
ful not to damage oil seal lip.

Push oil seal until ST3 contacts housing end face.
4) Remove ST3, and fit backing washer.
ST1 926370000 INSTALLER A
ST2 927630000 STAND BASE
ST3 926360000 INSTALLER A
ST4 927620000 INSTALLER B
G4M0150
5) Force-fit ball bearing using ST3.
ST1 926370000 INSTALLER A
ST2 927630000 STAND BASE
ST3 927640000 INSTALLER B
NOTE:
Be careful not to tilt ball bearing during installation.
6) Install snap ring using snap ring pliers.
NOTE:
Rotate snap ring to check for proper installation.
G4M0151
3. RACK HOUSING OIL SEAL AND BACK-UP
WASHER

Removal
Insert a round rod [26—27 mm (1.02—1.06 in) dia.] from
pinion housing side and remove oil seal and back-up
washer by hammering the rod.
NOTE:

Discard removed oil seal and back-up washer.

Apply the unchamfered end of remover to back-up
washer.
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5. Control Valve (Power Steering Gearbox) [LHD model]

G4M0152

Installation
Force-fit oil seal and back-up washer using ST.
ST 927650000 INSTALLER
CAUTION:
Be careful not to damage or scratch cylinder inner
wall.
NOTE:

Apply ATF DEXRON II to oil seal.

Pay special attention not to install back-up washer and
oil seal in wrong direction.

Push oil seal until the stepped portion of A contacts end
face of B.
B4M0134A
D: ASSEMBLY
1. RACK ASSEMBLY
1) Fixing rack housing
Fix rack housing in vice using ST.
ST 926200000 STAND
CAUTION:

When fixing rack housing in vice, be sure to use this
special tool. Do not fix rack housing in vice using pad
such as aluminum plates, etc.

When using old rack housing, be sure to clean and
remove rust before assembling. Check pinion housing
bushing carefully.
G4M0154
2) Fit ST over toothed portion of rack assembly, and check
for binding or unsmooth insertion. If any deformation is
noted on flats at the end of rack, shape by using file, and
wash with cleaning fluid.
3) Apply genuine grease to teeth of thoroughly washed
rack assembly, and fit ST over the toothed portion.
ST 926390001 COVER & REMOVER
NOTE:

Be careful not to block air passage with grease. Remove
excessive grease.
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4-3SERVICE PROCEDURE
5. Control Valve (Power Steering Gearbox) [LHD model]

After fitting cover, check air passage hole for clogging.
If clogged, open by removing grease from the hole.

Check rack shaft for damage.

Apply ATF DEXRON II to this ST and surface of piston
ring to prevent seal from being damaged.
G4M0155
4) Insert rack assembly into rack housing from cylinder
side, and remove ST after it has passed completely
through oil seal.
NOTE:
Before inserting rack assembly, apply a coat of ATF
DEXRON II to surfaces of ST and rack piston.
ST 926390001 COVER & REMOVER
G4M0156
5) Fit ST1 and ST2 over the end of rack, and install rack
bushing.
ST1 926400000 GUIDE
ST2 927660000 GUIDE
CAUTION:

If burrs, or nicks are found on this guide and rack
shaft portion, remove by filing.

Dip rack bushing in ATF DEXRON II before installing,
and pay attention not to damage O-ring and oil seal.
G4M0157
6) Insert rack stopper into cylinder tube until internal
groove (on cylinder side) is aligned with external groove
(on rack stopper). Turn rack stopper with ST so that rack
stopper hole is seen through cylinder slits.
7) Insert rack stopper into rack housing, and wrap circlip
using ST to secure rack stopper in position.
ST 926340001 WRENCH
CAUTION:
Be careful not to scratch rack while winding circlip.
NOTE:
Rotate wrench another 90 to 180°after the end of circlip
has been wrapped in.
8) Fit mounting rubber onto rack housing.
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5. Control Valve (Power Steering Gearbox) [LHD model]

G4M0158
2. VALVE ASSEMBLY
1) Apply genuine grease to pinion gear and bearing of
valve assembly.
B4M0135
2) Install packing on valve assembly. Insert valve assem-
bly into place while facing rack teeth toward pinion.
CAUTION:
Be sure to use a new packing.
NOTE:
Do not allow packing to be caught when installing valve
assembly.
3) Tighten bolts alternately to secure valve assembly.
Tightening torque:
25±5 N⋅m (2.5±0.5 kg-m, 18.1±3.6 ft-lb)
CAUTION:
Be sure to alternately tighten bolts.
48
4-3SERVICE PROCEDURE
5. Control Valve (Power Steering Gearbox) [LHD model]

6. Control Valve (Power Steering
Gearbox) [RHD model]
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”.
B4M0668A
A: 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 [W6A2] 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 thor-
oughly 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 sus-
pected 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 com-
pleting repair work, clean these areas again.
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4-3SERVICE PROCEDURE
6. Control Valve (Power Steering Gearbox) [RHD model]

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 O-ring is damaged. Replace valve assem-
bly 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 O-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.
6) Leakage from“e”
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.
CAUTION:

If leakage from“e”is noted again:
The oil seal of pinion and valve assembly is damaged.
Replace pinion and valve assembly with a new one. Or
replace the oil seal and the parts that are damaged
during disassembly with new ones.

If oil stops leaking from“e”:
The oil seal of rack housing is damaged.
Replace the oil seal and the parts that are damaged
during disassembly with new ones.
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4-3SERVICE PROCEDURE
6. Control Valve (Power Steering Gearbox) [RHD model]

G4M0817
B: DISASSEMBLY
1. VALVE ASSEMBLY
1) Slide dust cover out.
CAUTION:

Be careful not to scratch housing or input shaft dur-
ing dust cover removal. Also do not allow foreign mat-
ter to enter housing interior.

Replace dust cover with a new one if its inside bore
or lips are worn or damaged.
G4M0818
2) Remove the two bolts securing valve housing.
G4M0819
3) Remove valve housing, pinion and valve as a unit.
G4M0820
2. RACK ASSEMBLY
1) Remove holder using a 32 mm (1.26 in) wrench or
adjustable wrench.
CAUTION:
Discard old holder and replace with new one.
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4-3SERVICE PROCEDURE
6. Control Valve (Power Steering Gearbox) [RHD model]

G4M0821
2) Install ST on valve side of rack and press outer side oil
seal out.
ST 34099FA030 INSTALLER & REMOVER
CAUTION:

Block pipe connection of steering body to prevent
fluid from flowing out.

Do not allow rack to come in contact with inner wall
of cylinder. Otherwise, cylinder wall may be scratched,
resulting in oil leaks.

Remove holder and rack as a unit.

Check rack and steering body for bends or cracks
and replace as required.

Discard oil seal after removal and replace with new
ones.
G4M0822
3) Insert ST from valve side and press back-up ring and oil
seal out.
CAUTION:
Discard back-up ring and oil seal after removal and
replace with new ones.
ST 927580000 REMOVER
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4-3SERVICE PROCEDURE
6. Control Valve (Power Steering Gearbox) [RHD model]

G4M0823
4) Using ST1 and ST2, repair cylinder’s clinched sections.
ST1 34099FA080 PUNCH
ST2 34099FA070 BASE
G4M0889
5) If cylinder edge is deformed in a convex shape, repair
using an oil stone.
G4M0824
C: REPLACEMENT OF SEAL AND PACKING
1. VALVE HOUSING OIL SEAL

Removal
1) After removing dust cover, extract pinion and valve from
valve housing.
CAUTION:

If pinion and valve is difficult to remove, use a press.

Discard Y-packing after removal and replace with a
new one.

Check rotor for bends and serrations for damage
and replace as required.
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6. Control Valve (Power Steering Gearbox) [RHD model]

G4M0825
2) Using ST and press, remove dust seal, back-up washer,
Y-packing and ball bearing from valve housing.
CAUTION:

Use the“A”end of remover.

Do not apply a force to end surface of valve hous-
ing.

Do not reuse Y-packing after removal.
ST 34099FA000 INSTALLER & REMOVER
G4M0836

Installation
Specified steering grease:
VALIANT GREASE M2 (Part No. 003608001)
1) Apply a coat of grease to inner wall of valve housing,
Y-packing and outer perimeter of dust seal.
G4M0838
2) Using ST and press, install Y-packing in valve housing.
(1) Face Y-packing in the direction shown in figure
when installing.
(2) To avoid scratching Y-packing, apply a coat of
grease to contact surface of installer and Y-packing.
(3) To facilitate installation, attach Y-packing to installer
and position in valve housing before pressing into
place.
ST 34099FA000 INSTALLER & REMOVER
G4M0839
3) Attach ST2 to ST1, and press ball bearing into place
using a press.
NOTE:

To facilitate installation, attach ball bearing to remover
and position in valve housing before pressing it into place.

Use the“B”end of remover.
ST1 34099FA000 INSTALLER & REMOVER
ST2 34099FA050 SPACER
G4M0840
4) Charge Y-packing with specified steering grease.
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4-3SERVICE PROCEDURE
6. Control Valve (Power Steering Gearbox) [RHD model]