PS-2
General Description
POWER ASSISTED SYSTEM (POWER STEERING)
1. General Description
A: SPECIFICATION
Whole system
Minimum turning radius m (ft) 5.7 (18.7)
Steering angleInner wheel 37.0°±1.5°
Outer wheel 32.0°±1.5
Steering wheel diameter mm (in) 375 (14.76)
Lock to lock turn 3.44
Gearbox
Ty p e R a c k a n d P i n i o n , I n t e g r a l
Backlash 0 (Automatic adjusting)
Va l ve ( Po w e r s t e e r i n g s y s t e m ) R o t a r y va l ve
Pump
(Power steering
system)
Ty p e Va n e p u m p
Oil tank Installed on body
Specific outputcm3 (cu in)/rev.9.6 (0.586)
Relief pressurekPa (kg/cm2, psi)8,800 — 9,400 (90 — 96, 1,276 — 1,363)
Hydraulic fluid control Engine RPM sensitive
Hydraulic fluid2(US qt, Imp qt)1,000 rpm: 7.0 (7.4, 6.2)
3,000 rpm: 6.0 (6.3, 5.3)
RPM Range rpm 500 — 8,600
Direction of rotation Clockwise
Hydraulic oil
(Power steering
system)
Description ATF DEXRON III or equivalent
Capacity
2(US qt, Imp qt)
Oil tank 0.2 (0.2, 0.2)
Whole system 0.9 (1.0, 0.8)
Steering wheel Free play mm (in) 17 (0.67)
Steering shaftClearance between the steering wheel and
column covermm (in) 3.0 (0.12)
Steering gear-
box
(Power steering
system)
Sliding resistance N (kgf, lb)
400 (41, 90) or less
Difference between right and left sliding resistance:
Less than 20%
Rack shaft play in
the radial direction
Right–turn steering mm (in) 0.19 (0.0075) or less
Left–turn steering mm (in)Horizontal movement: 0.6 (0.024) or less
Ve r t i c a l m o v e m e n t : 0 . 4 ( 0 . 0 1 6 ) o r l e s s
Input shaft playIn radial direction mm (in) 0.18 (0.0071) or less
In axial direction mm (in) 0.27 (0.0106) or less
Rotation resistance N (kgf, lb)
Maximum allowable value: 10.5 (1.07, 2.36) or less
Difference between right and left sliding resistance:
Less than 20%
Oil Pump
(Power steering
system)
Pulley shaftRadial play mm (in) 0.2 (0.008) or less
Axial play mm (in) 0.6 (0.024) or less
PulleyDitch deflection mm (in) 1.0 (0.039) or less
Rotation resistance N (kgf, lb) 9.22 (0.94, 2.07) or less
Regular pressure (Unloaded)kPa (kg/cm2, psi)981 (10, 142) or less
Steering wheel
effort (Power
steering sys-
tem)
At standstill with engine idling on paved road N (kgf, lb) 29.4 (3.0, 6.6) or less
At standstill with engine stalled on paved
roadN (kgf, lb) 294.2 (30, 66.2) or less
PS-3
General Description
POWER ASSISTED SYSTEM (POWER STEERING)
B: COMPONENT
1. STEERING WHEEL AND COLUMN
Recommended power steering fluid Manufacturer
AT F D E X R O N I I I o r e q u i v a l e n t
B.P.
CALTEX
CASTROL
MOBIL
SHELL
TEXACO
(1) Steering shaft (5) Steering wheelTightening torque: N·m (kgf-m, ft-lb)
(2) Steering roll connector (6) Satellite switchT1: 1.2 (0.12, 0.9)
(3) Column cover (7) Cruise control switchT2: 25 (2.5, 18.1)
(4) Steering wheel lower cover (8) Airbag moduleT3: 45 (4.6, 33.2)
PS-00727
T2
T1
T3
(5)
(1)
(2)
(3)
(4)
(8)
(6)
(7)
PS-7
General Description
POWER ASSISTED SYSTEM (POWER STEERING)
C: CAUTION
Please clearly understand and adhere to the following general precautions. They must be strictly followed to
avoid any injury to the person doing the work or people in the area.
1. OPERATION
•Wear work clothing, including a cap, protective goggles and protective shoes during operation.
•Before removal, installation or disassembly, be sure to clarify the failure. Avoid unnecessary removal, in-
stallation, disassembly and replacement.
•Be careful not to burn yourself, because each part on the vehicle is hot after running.
•Use SUBARU genuine power steering fluid, grease etc. or the equivalent. Do not mix fluid, grease etc. with
that of another grade or from other manufacturers.
•Be sure to tighten fasteners including bolts and nuts to the specified torque.
•Place shop jacks or rigid racks at the specified points.
•Before securing a part on a vise, place cushioning material such as wooden blocks, aluminum plate or
cloth between the part and the vise.
2. OIL
When handling oil, follow the rules below to prevent unexpected accidents.
•Prepare container and waste cloths when performing work which oil could possibly spill. If oil spills, wipe
it off immediately to prevent from penetrating into floor or flowing outside, for environmental protection.
•Follow all government and local regulations concerning waste disposal.
D: PREPARATION TOOL
1. SPECIAL TOOL
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
925711000 PRESSURE
GAUGE
Used for measuring oil pressure.
926200000 STAND • Used when inspecting characteristic of gear-
box assembly and disassembling it.
•Used with BOSS D (34199AG000).
ST-925711000
ST-926200000
PS-8
General Description
POWER ASSISTED SYSTEM (POWER STEERING)
34099AC010 ADAPTER HOSE A Used with PRESSURE GAUGE (925711000).
34099AC020 ADAPTER HOSE B Used with PRESSURE GAUGE (925711000).
926230000 SPANNER For the lock nut when adjusting backlash of gear-
box.
34099PA100 SPANNER Used when measuring the rotating resistance of
gearbox assembly.
926420000 PLUG When fluid leaks from pinion side of gearbox
assembly, remove pipe B from valve housing,
attach this tool and check fluid leaking points.
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
ST34099AC010
ST34099AC020
ST-926230000
ST34099PA100
ST-926420000
PS-17
Steering Gearbox
POWER ASSISTED SYSTEM (POWER STEERING)
5. Steering Gearbox
A: REMOVAL
1) Set the vehicle on a lift.
2) Disconnect the ground cable from the battery.
3) Lift-up the vehicle, and remove the front wheels.
4) Remove the under cover.
5) Remove the front exhaust pipe assembly. (Non–
turbo model)
WARNING:
Be careful not to burn yourself because the ex-
haust pipe is hot.
6) After pulling off the cotter pin and removing the
castle nut, use a puller to remove the tie–rod end
from the knuckle arm.
7) Remove the front crossmember support plate,
jack-up plate and front stabilizer.
8) Remove the one pipe joint at the center of the
gearbox, and connect the vinyl hose to the pipe and
the joint. Discharge the fluid by turning the steering
wheel fully clockwise and counterclockwise. Dis-
charge the fluid similarly from other pipes.
9) Remove the universal joint.
10) Disconnect the pipe C from pressure hose first,
then disconnect pipe D from the return hose.
(1) Castle nut
(2) Tie–rod end
(3) Knuckle arm
(1) Crossmember support plate
(2) Jack–up plate
PS-00043
(2)(1)
(1)
FS-00200
(1) Pipe A
(2) Pipe B
(1) Pipe C
(2) Pipe D
(3) Pressure hose
(4) Return hose
(2)
PS-00553
(1)
PS-00538
(4)
(3)
(2)
(1)
PS-19
Steering Gearbox
POWER ASSISTED SYSTEM (POWER STEERING)
6) After tightening the castle nut to the specified
tightening torque, tighten it further within 60° until
the cotter pin hole is aligned with slot in the nut. Fit
the cotter pin into the nut, and then bend the pin to
lock.
7) Install the front stabilizer.
8) Install the front crossmember support plate and
jack-up plate.
9) Install the front exhaust pipe assembly. (Non–
turbo model)
10) Install the under cover.
11) Install the front wheels.
12) Tighten the wheel nuts to the specified torque.
Tightening torque:
110 N·m (11.2 kgf-m, 81.1 ft-lb)
13) Lower the vehicle.
14) Remove the steering wheel.
15) Align the center position of the roll connector.
16) Install the steering wheel.
17) Connect the ground cable to the battery.
18) Pour fluid into the oil tank, and bleed air.
19) Check for fluid leaks.
20) Check the fluid level in oil tank.
21) After adjusting toe-in and steering angle, tight-
en the lock nut on tie-rod end.
Tightening torque:
85 N·m (8.7 kgf-m, 62.7 ft-lb)
NOTE:
When adjusting toe-in, hold the boot as shown to
prevent it from being rotated or twisted. If it be-
comes twisted, straighten it.
C: DISASSEMBLY
1. RACK HOUSING ASSEMBLY
1) Disconnect the four pipes from gearbox.
NOTE:
Remove the pipes C and D, which are fixed to
clamp plate, as a unit.
2) Secure the gearbox removed from vehicle in a
vise using ST.
ST1 926200000 STAND
ST2 34199AG000 BOSS D
CAUTION:
Secure the gearbox in a vise using ST as shown
in the figure. Do not secure the gearbox without
this ST.
3) Remove the tie-rod end and lock nut from gear-
box.
(A) Cotter pin
(B) Castle nut
(C) Tie–rod end
DS-00042
(C)
(B)
(A)
(1) Clamp
PS-00051
PS-00492
(1)
ST1
ST2
PS-29
Steering Gearbox
POWER ASSISTED SYSTEM (POWER STEERING)
37) Install the four pipes on gearbox.
(1) Connect the pipes A and B to the four pipe
joints of gearbox.
Tightening torque:
Refer to the component parts.
General Description.>
(2) Connect the pipes C and D to gearbox.
Tightening torque:
Pipe C: 37 N·m (3.8 kgf -m, 27.3 ft-lb)
Pipe D: 29 N·m (3.0 kgf-m, 21.4 ft-lb)
2. CONTROL VALVE ASSEMBLY
Specified steering grease:
VALIANT GREASE M2 (Part No. 003608001)
1) Clean all parts and tools before reassembling.
2) Apply a coat of specified power steering fluid to
the inner wall of valve housing.
3) To avoid scratching the oil seal, apply a coat of
grease to the contact surface of installer and oil
seal.
4) Verify the direction of oil seal. Install the oil seal
to installer and position it to valve housing.
5) Press the oil seal into position using press.
ST 34199AG090 INSTALLER & REMOVER
6) Install the bearing to ST and position it to hous-
ing. Using the ST and a press, install the special
bearing in valve housing.
ST 34199AG090 INSTALLER & REMOVER
7) Apply vinyl tape to the groove of pinion.
(1) Pipe C
(2) Pipe D
(1) Apply fluid.
PS-00525(1)
(2)
PS-00169(1)
(1) Special bearing
(2) Oil seal
PS-00526
ST
(2)
(1)
PS-00527
ST
PS-36
Steering Gearbox
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
approx. 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 one.
4) Cause and solution for oil leakage from “b”.
The torsion bar O–ring is damaged. Replace the
valve assembly with a new one.
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 one.
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 one.
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 about thirty to forty times
with the engine running, and make comparison of
the leaked portion immediately after and several
hours after this operation.
(1) Leakage from “e”
The cylinder seal is damaged. Replace the rack
bushing with a new one.
(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 ap-
prox. 30 to 40 times with the engine running,
then inspect the leaked portion immediately af-
ter and several hours after this operation.
•If leakage from “f” is noted again:
The oil seal of pinion & valve assembly is dam-
aged. Replace the pinion & 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 “f”:
The oil seal of rack housing is damaged. Replace
the oil seal and parts that are damaged during dis-
assembly with new ones.
F: ADJUSTMENT
1) Adjust the front toe.
Standard of front toe:
IN 3 — OUT 3 mm (IN 0.12 — OUT 0.12 in)
2) Adjust the steering angle of the wheels.
Specification of steering angle:
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.
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.
(1) Lock nut
Inner wheel 37.0°±1.5°
Outer wheel 32.0°±1.5°
(1) Within 5°
PS-00107
PS-00513
(1)