Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 494

DI-21

Front Differential Assembly

DIFFERENTIALS

3. Front Differential Assembly

A: NOTE

• 6MT

For front differential for the 6MT, refer to the “6MT”

section.  <Ref.  to  6MT-100,  Front  Differential  As-

sembly.>

• 5MT

For front differential for the 5MT, refer to the “5MT”

section. <Ref. to 5MT-69, Front Differential Assem-

bly.>

DI-22

Rear Differential (T-type)

DIFFERENTIALS

4. Rear Differential (T-type)

A: REMOVAL

1) Disconnect the ground cable from battery.

2) Place the gear shift lever in neutral.

3) Release the parking brake.

4) Loosen the wheel nuts.

5) Lift up the vehicle.

6) Remove the wheels.

7) Disconnect the oil temperature switch connector

and ground connector. (H3)

8) Drain  differential  gear  oil.  <Ref.  to  DI-19,  RE-

PLACEMENT, Differential Gear Oil.>

9) Remove  the  rear  exhaust  pipe  and  muffler.

<Ref.  to  EX(w/o  STI)-2,  General  Description.>

<Ref.  to  EX(STI)-13,  REMOVAL,  Rear  Exhaust

Pipe.>  <Ref.  to  EX(w/o  STI)-2,  General  Descrip-

tion.> <Ref. to EX(STI)-15, REMOVAL, Muffler.>

10) Remove the heat shield cover.

11) Remove  the  propeller  shaft.  <Ref.  to  DS-11,

REMOVAL, Propeller Shaft.>

12) Remove the DOJ of rear drive shaft from rear

differential.

(1) Remove the ABS wheel speed sensor cable

from the clamp.

(2) Remove the bolts which secure the rear sta-

bilizer link to the rear lateral link.

(3) Remove  the  bolts  which  secure  the  shock

absorber to the rear lateral link.

(4) Remove the bolts which secure the rear lat-

eral link to the housing.

(A) Oil temperature switch connector
(B) Ground connector

DI-00536

(A)

(B)

MT-01660

(A) ABS wheel speed sensor cable

DI-00507

(A)

DI-00508

FU-03359

DI-00509

DI-23

Rear Differential (T-type)

DIFFERENTIALS

(5) Remove the bolts which secure the trailing

link to the housing.

(6) Remove  the  DOJ  from  the  rear  differential

by using ST.

NOTE:

When removing the DOJ from the rear differential,

fit the ST to the bolts as shown in the figure so as

not to damage the side retainer.

ST 28099PA100 DRIVE SHAFT REMOVER

13) Suspend the rear drive shaft to the rear cross-

member using wire.

14) Support the rear differential with the transmis-

sion jack.

15) Remove the rear differential front member.

16) Remove the self-lock nuts which hold the rear

differential to the rear crossmember.

17) While  slowly  lowering  the  transmission  jack,

move the rear differential forward, and remove the

rear differential from the vehicle.

(A) Bolt

DI-00510

DI-00270

(A)

ST

DI-00583

DI-00745

DI-00742

DI-00602

DI-00614

DI-24

Rear Differential (T-type)

DIFFERENTIALS

18) Remove the rear differential member plate from

the rear differential.

B: INSTALLATION

1) Attach the rear differential member plate to the

rear differential.

2) Set the rear differential to transmission jack.

3) Adjust the transmission jack and properly insert

the rear differential stud bolt into rear crossmember

bushing.

4) After inserting the rear differential stud bolt into

the rear crossmember bushing, lift up the transmis-

sion jack and align the rear differential to its attach-

ment position.

5) Tighten a new self-locking nut temporarily to rear

crossmember.

6) Install the rear  differential front member with a

new self-locking nut.
Tightening torque:

T1: 50 N·m (5.1 kgf-m, 36.9 ft-lb)

T2: 110 N·m (11.2 kgf-m, 81.1 ft-lb)

(A) Rear differential member plate

(A) Rear differential member plate

DI-00359

(A)

DI-00359

(A)

DI-00614

DI-00613

DI-00602

DI-00541

T2

T1