Subaru Outback (BR): General Description of Differentials

A: SPECIFICATION

1. REAR DIFFERENTIAL

When replacing a rear differential assembly, select the correct one according to the following table.

NOTE:

• Using a different rear differential assembly will cause the drive train and tires to drag or emit abnormal noise.
• For option code, refer to "ID" section. <Ref. to ID-2, IDENTIFICATION, Identification.>

2. IDENTIFICATION

Identification positions are shown in the following figures. For details concerning identification, refer to the "ID" section.

• T-type

1. Identification

• VA1-type

1. Identification

• VA2-type

1. Identification

3. REAR DIFFERENTIAL GEAR OIL

Recommended gear oil: GL-5 (75W-90)

CAUTION: Each oil manufacturer has its base oil and additives.

Thus, do not mix two or more brands.

1. Item
2. Rear differential gear oil
3. API classification
4. SAE viscosity No. and applicable temperature

4. SERVICE DATA

B: COMPONENT

1. REAR DIFFERENTIAL (T-TYPE)

1. Hypoid driven gear and drive pinion set
2. Pinion height adjusting washer
3. Rear bearing
4. Preload adjusting spacer
5. Preload adjusting washer
6. Differential carrier
7. Front bearing
8. Spacer
9. Pilot bearing
10. Front oil seal
11. Companion flange
12. Self-locking nut
13. Side bearing
14. O-ring
15. Side retainer shim
16. Side retainer
17. Side oil seal
18. Side gear thrust washer
19. Side gear
20. Pinion mate gear
21. Pinion mate gear washer
22. Pinion shaft lock pin
23. Snap ring
24. Pinion mate shaft
25. Air breather cap
26. Stud bolt
27. Filler plug
28. Drain plug
29. Rear cover
30. Differential case
31. Gasket

Tightening torque: N*m (kgf-m, ft-lb)
T1: 10.5 (1.1, 7.7)
T2: 29.5 (3.0, 21.8)
T3: 49 (5.0, 36.1)
T4: 103 (10.5, 76.0)
T5: 181.5 (18.5, 133.9)

2. REAR DIFFERENTIAL (VA1-TYPE)

1. Hypoid driven gear and drive pinion set
2. Pinion height adjusting washer
3. Rear bearing
4. Preload adjusting spacer
5. Preload adjusting washer
6. Differential carrier
7. Front bearing
8. Spacer
9. Pilot bearing
10. Front oil seal
11. Companion flange
12. Self-locking nut
13. Lock plate
14. Side bearing
15. O-ring
16. Side retainer
17. Side oil seal
18. Side gear thrust washer
19. Side gear
20. Pinion mate gear
21. Spring pin
22. Differential case
23. Pinion mate shaft
24. Air breather cap
25. Stud bolt
26. Gasket
27. Filler plug
28. Drain plug
29. Rear cover
30. Gasket

Tightening torque:N*m (kgf-m, ft-lb)
T1: 25 (2.5, 18.4)
T2: 50 (5.1, 36.9)
T3: <Ref. to DI-52, ASSEMBLY, Rear Differential (VA-type).>
T4: 191 (19.5, 140.9)

3. REAR DIFFERENTIAL (VA2-TYPE)

1. Hypoid driven gear and drive pinion set
2. Pinion height adjusting washer
3. Rear bearing
4. Preload adjusting spacer
5. Preload adjusting washer
6. Differential carrier
7. Front bearing
8. Spacer
9. Pilot bearing
10. Front oil seal
11. Companion flange
12. Self-locking nut
13. Lock plate
14. Side bearing
15. O-ring
16. Side retainer
17. Side oil seal
18. Differential case
19. Circlip
20. Side gear thrust washer
21. Side gear
22. Pinion mate gear
23. Spring pin
24. Pinion mate shaft
25. Air breather cap
26. Stud bolt
27. Rear cover
28. Gasket
29. Gasket
30. Filler plug
31. Drain plug

Tightening torque: N*m (kgf-m, ft-lb)
T1: 25 (2.5, 18.4)
T2: 34 (3.5, 25.1)
T3: 50 (5.1, 36.9)
T4: <Ref. to DI-52, ASSEMBLY, Rear Differential (VA-type).>
T5: 191 (19.5, 140.9)

4. REAR DIFFERENTIAL MOUNTING SYSTEM

1. Mass damper (CVT model)
2. Rear differential front member
3. Rear differential member plate
4. Rear differential ASSY
5. Sub frame
6. Rear differential mount bushing
7. Self-locking nut
8. Rear differential member plate (CVT model)

Tightening torque: N*m (kgf-m, ft-lb)
T1: 50 (5.1, 36.9)
T2: 70 (7.1, 51.6)
T3: 110 (11.2, 81.1)

C: CAUTION

• Wear appropriate work clothing, including a cap, protective goggles and protective shoes when performing any work.
• Remove contamination including dirt and corrosion before removal, installation or disassembly.
• Keep the disassembled parts in order and protect them from dust and dirt.
• Before removal, installation or disassembly, be sure to clarify the failure. Avoid unnecessary removal, installation, disassembly and replacement.
• Vehicle components are extremely hot after driving.

  Be wary of receiving burns from heated parts.

• Use SUBARU genuine gear oil, grease or equivalent.

  Do not mix gear oil, grease, etc. of different grades or manufacturers.

• Be sure to tighten fasteners including bolts and nuts to the specified torque.
• Place shop jacks or rigid racks at the specified points.
• Apply gear oil onto sliding or revolving surfaces before installation.
• Before installing the O-ring or snap ring, apply a sufficient amount of gear oil to avoid damage and deformation.
• Before securing a part on a vise, place cushioning material such as wood blocks, aluminum plate, or cloth between the part and the vise.
• Avoid damaging the mating surface of the case.

D: PREPARATION TOOL

1. SPECIAL TOOL

2. GENERAL TOOL

READ NEXT: