Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 573
PS-13
Steering Wheel
POWER ASSISTED SYSTEM (POWER STEERING)
2. Steering Wheel
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Set the tire to the straight-ahead position.
3) Remove the airbag module. <Ref. to AB-15, RE-
MOVAL, Driver’s Airbag Module.>
WARNING:
Always refer to “Airbag System” before per-
forming service on the airbag modules. <Ref. to
AB-5, CAUTION, General Description.>
4) Place alignment marks on the steering wheel
and steering shaft.
5) Remove the steering wheel nut, and then draw
out the steering wheel from shaft using steering
puller.
B: INSTALLATION
WARNING:
Always refer to “Airbag System” before per-
forming service on the airbag modules. <Ref. to
AB-5, CAUTION, General Description.>
1) Align the center position of the roll connector.
<Ref. to AB-27, ADJUSTMENT, Roll Connector.>
2) Install each part in the reverse order of removal.
CAUTION:
Insert the roll connector guide pin into the
guide hole on the lower end of the steering
wheel surface. Avoid damaging the pin.
NOTE:
Align the alignment marks on the steering wheel
and steering shaft.
Tightening torque:
39 N·m (4.0 kgf-m, 28.8 ft-lb)
Column cover-to-steering wheel clearance:
2 — 4 mm (0.08 — 0.16 in)
C: INSPECTION
1) Check the steering wheel for deformation. If the
deformation is excessive, replace the steering
wheel.
Specification:
Runout of steering wheel
17 mm (0.67 in) or less
Deflection of steering wheel
6 mm (0.24 in) or less
2) Check the splines on the steering wheel for dam-
age. If the damage is excessive, replace the steer-
ing wheel.
(1) Alignment mark
(1)
PS-00552
PS-14
Universal Joint
POWER ASSISTED SYSTEM (POWER STEERING)
3. Universal Joint
A: REMOVAL
1) Remove the steering wheel. <Ref. to PS-13, RE-
2) Place alignment marks on the universal joint and
gear box assembly input shaft.
3) Remove the universal joint bolt and remove the
universal joint.
B: INSTALLATION
1) Align the cutout portion at serrated section of the
column shaft (c) and yoke (b), then install the uni-
versal joint into column shaft.
CAUTION:
Be sure to align the protrusion section (a) of the
column shaft side with the cutout (a) of the ser-
ration. If the protrusion is aligned with the other
cutout (d), the universal joint bolt cannot be as-
sembled.
2) Install the universal joint to the serrations of
gearbox assembly by matching alignment marks.
3) Tighten the bolts.
CAUTION:
Excessively large tightening torque of univer-
sal joint bolts may lead to heavy steering wheel
operation.
Tightening torque:
24 N·m (2.4 kgf-m, 17.7 ft-lb)
Clearance between coupling of universal joint
and turbo cover:
15 mm (0.59 in) or more
4) Align the center position of the roll connector.
<Ref. to AB-27, ADJUSTMENT, Roll Connector.>
5) Install the steering wheel. <Ref. to PS-13, IN-
C: INSPECTION
1) Check for wear, damage or any other faults. Re-
place as necessary
Service limit:
Universal joint play: 0 mm (0 in)
2) Measure the swing torque of universal joint.
Service limit:
Maximum load: 4.5 N (0.46 kgf, 1.01 lbf) or
less
(A) Column shaft side
(B) Gearbox side
PS-00874
PS-01345
(A)
(B)
(a)
(b)
(c)
(a)
(d)
(d)
(1) Play
(1) Yoke
(1)
PS-01207
PS-00034
PS-15
Universal Joint
POWER ASSISTED SYSTEM (POWER STEERING)
Service limit:
Maximum load: 4.5 N (0.46 kgf, 1.01 lbf) or
less
(1) Yoke
PS-00035
PS-16
Steering Column
POWER ASSISTED SYSTEM (POWER STEERING)
4. Steering Column
A: REMOVAL
1) Adjust the tilt position of the steering column to
the highest position and lock the tilt lever.
2) Remove the steering wheel. <Ref. to PS-13, RE-
3) Remove the universal joint. <Ref. to PS-14, RE-
4) Remove the instrument panel lower cover under.
5) Remove the instrument panel lower cover upper.
6) Remove the one screw which secures the col-
umn cover lower, and then remove the column cov-
er lower.
7) Remove all connectors from the steering col-
umn.
8) Remove the two bolts under instrument panel
securing the steering column.
(1)
Tilt and telescopic steering col-
umn
(2)
Universal joint
(1)
(2)
PS-00876
PS-00798
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