Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 476

RS-11

Rear Trailing Link

REAR SUSPENSION

2. REAR HOUSING BUSHING

1) Remove the rear housing. <Ref. to DS-20, RE-

MOVAL, Rear Axle.>

2) Using the ST and a hydraulic press, push out the

bushing.

ST 1 200099FG000 BUSHING REMOVER

ST 2 20099PA010

INSTALLER & REMOVER

(BASE)

D: ASSEMBLY

1. REAR TRAILING LINK BUSHING

Using the ST A and ST B, press-fit the bushing.
CAUTION:

Make sure to press the bushing straight in.

ST A 8998741000 INSTALLER

ST B 20299AG010 BASE

(1) Rear housing
(2) Bushing

DS-00458

ST1

ST2

ST1

ST2

(1)

(2)

DS-00459

ST-A

ST-B

RS-00256

RS-12

Rear Trailing Link

REAR SUSPENSION

2. REAR HOUSING BUSHING

Press-fit the bushing using ST and the hydraulic

press.
CAUTION:

Make sure to press the bushing straight in.

ST 1 20099FG000 BUSHING REMOVER

ST 2 20099PA010 INSTALLER & REMOVER

(BASE)

E: INSPECTION

Perform visual check for damage or bend on the

trailing link.

(1) Rear housing
(2) Bushing

RS-00381

ST1

ST2

(2)

(1)

ST1

ST2

(1)

(2)

DS-00461

RS-13

Upper Arm

REAR SUSPENSION

5. Upper Arm

A: REMOVAL

1) Remove the rear sub frame. <Ref. to RS-17, RE-

MOVAL, Rear Sub Frame.>

2) Remove the rear ABS wheel speed sensor

bracket.

3) Remove the bolts, then remove the upper arm.

B: INSTALLATION

CAUTION:

• Be sure to use a new self-locking nut.

• Always tighten the bushing when the arm is

positioned in the state where the vehicle is at

curb weight and the wheels are in full contact

with the ground.

1) Install each part in the reverse order of removal.

2) Inspect the wheel alignment and adjust if neces-

sary.
Tightening torque:

Upper arm — Rear sub frame

90 N·m (9.2 kgf-m, 66.4 ft-lb)

Upper arm — Rear housing

80 N·m (8.2 kgf-m, 59 ft-lb)

Rear ABS wheel speed sensor bracket

7.5 N·m (0.76 kgf-m, 5.5 ft-lb)

C: INSPECTION

1) Visually check the upper arm for damage and

deformation.

2) Visually check the bushing for abnormal cracks,

fatigue or damage.

RS-00257

RS-00258

RS-14

Rear Shock Absorber

REAR SUSPENSION

6. Rear Shock Absorber

A: REMOVAL

1) Remove the luggage floor mat. (5 door model)

2) Remove the strut cap of the quarter trim.

3) Remove the trunk room mat. (4 door model)

4) Lift up the vehicle, and then remove the rear

wheels.

5) Remove the nut and disconnect the rear stabiliz-

er link.

6) Remove the shock absorber lower bolt.

7) Disconnect the rear lateral link.

8) Remove the shock absorber mount nut.

9) Remove the shock absorber.

B: INSTALLATION

CAUTION:

• Be sure to use a new self-locking nut.

• Always tighten the bushing in the state where

the vehicle is at curb weight and the wheels are

in full contact with the ground.

1) Install each part in the reverse order of removal.
Tightening torque:

Refer to “COMPONENT” of “General Descrip-

tion” for the tightening torque. <Ref. to RS-3,

COMPONENT, General Description.>

2) Check the wheel alignment and adjust it if nec-

essary.

C: DISASSEMBLY

Refer to “Front Strut” for disassembly procedure.

<Ref. to FS-25, DISASSEMBLY, Front Strut.>

D: ASSEMBLY

Refer to “Front Strut” for installation procedures.

<Ref. to FS-25, ASSEMBLY, Front Strut.>

E: INSPECTION

Refer to “Front Strut” for inspection procedures.

<Ref. to FS-26, INSPECTION, Front Strut.>

F: DISPOSAL

CAUTION:

• Before handling the shock absorber, be sure

to wear goggles to protect eyes from gas, oil

and cutting powder.

• Do not disassemble the shock absorber or

place it into a fire.

• Drill a hole into shock absorbers in case of

discarding shock absorbers filled with gas.

1) Place the shock absorber on a level surface with

the piston rod fully expanded.

2) Make a hole into the specified position 30 mm

(1.18 in) deep using a drill with 2 — 3 mm (0.08 —

0.12 in) diameter.

RS-00260

RS-00261

(1) 40 mm (1.57 in)

(1)

RS-00135