Opel Frontera UBS. Manual - part 121

4A2B–4

DIFFERENTIAL (REAR 244mm)

Axle Housing

Axle Housing and Associated Parts

420RW001

Legend

(1) Coil Spring and Insulator
(2) Axle Housing Assembly
(3) ABS Speed Sensor and Harness (if so

equipped)

(4) Nut
(5) Parking Brake Cable
(6) Bolt and Nut
(7) Antilock Brake System (ABS) Connector and

Bracket (if so equipped)

(8) Bolt and Nut
(9) Nut

(10) Differential Assembly

(11) Axle Shaft Assembly

(12) Brake Disc
(13) Brake Pipe
(14) Brake Caliper
(15) Nut
(16) Breather Hose
(17) Flare Nut

Removal

1. Raise the vehicle and support it with suitable safety

stands.
The hoist must remain under the rear axle housing.

2. Drain brake fluid.  Refer to Hydraulic Brakes in Brakes

section.

3. Remove rear wheels and tires.  Refer to Wheel in

Suspension section.

4. Remove propeller shaft.  Refer to Rear Propeller

Shaft in this section.

5. Drain the rear axle oil into a proper container.
6. Remove parking brake cable, release the connection

between the cable fixing clip equalizer.  Refer to
Parking Brakes in Brakes section.

7. Move the clip aside and pull out the breather hose.

DIFFERENTIAL (REAR 244mm)

4A2B–5

8. Disconnect the ABS connectors (1) and remove the

brackets (2) (if so equipped) attached to the frame
and center link.

350RS001

9. Loosen the brake tube flare nut, remove the clip and

take out the brake tube.

10. Remove the shock absorber fixing nut from the axle

housing.

11. Remove the stabilizer linkage mounting nut from the

axle housing.

12. Remove the lateral rod fixing nut from the axle

housing.

13. Remove the center link mounting bolt and nut from

the axle housing.

14. Remove the trailing link fixing bolt and nut from the

axle housing.

15. Jack down and remove the coil spring and insulator.
16. Axle housing assembly can be separated from the

vehicle on completion of steps 1 – 11.

17. Remove the brake caliper fixing bolt (3), loosen the

flare nut (1), release the clip (2) and take out the brake
caliper together with the flexible hose.

306RS001

18. Remove brake disc.
19. Remove antilock brake system speed sensor fixing

bolt and the clip and bracket (if so equipped)  on the
axle housing.

20. Remove the brake pipe clip and fixing bolt on the axle

housing and take out the brake pipe.

21. Remove the bearing holder fixing nut and take out the

axle shaft assembly, be sure not to damage the oil
seal by the spline of the shaft, Refer to Axle Shaft in
this section.

22. Remove differential assembly, refer to Differential

Assembly in this section.

Oil Seal Replacement

Remove the oil seal, carefully not to damage the housing,
and mount new oil seal using oil seal installer
5–8840–2294–0

420RW028

Installation

1. Install differential assembly, refer to Differential

Assembly in this section.

2. Install axle shaft assembly then tighten the bearing

holder mounting nut to the specified torque. Be sure
not to damage the oil seal by the spline of the shaft.

Torque: 74N·m (7.5kg·m/54 lb ft)

3. Install brake pipe.
4. Connect antilock brake system (ABS) speed sensor

and harness (if so equipped), refer to Anti–Lock
Brake System  in Brake section.

5. Install brake disc.
6. Install brake caliper. Refer to Disk Brakes in Brake

section.

7. Install axle housing assembly.
8. Install coil spring and insulator.
9. Install the trailing link fixing bolt and nut to the axle

housing. For the procedures in items 9–13, refer to
Suspension section.

10. Install the center link bolt and nut to the axle housing.

4A2B–6

DIFFERENTIAL (REAR 244mm)

11. Install the lateral rod fixing nut to the axle housing.

12. Install the stabilizer linkage mounting nut to the axle

housing.

13. Install the shock absorber fixing nut to the axle

housing.

14. Install brake tube flare nut, Refer to Disk Brakes in

Brake section.

15. Install ABS connector and bracket (if so equipped).
16. Connect breather hose.
17. Install parking brake cable, Refer to Parking Brakes in

Brake section.

18. Bleed brakes. Refer to Hydraulic Brakes in Brake

section.

Pinion Oil Seal

Pinion Oil Seal and Associated Parts

425RW043

Legend

(1) Flange Nut and Washer
(2) Flange

(3) Oil Seal
(4) Outer Bearing
(5) Collapsible Spacer

Removal

1. Remove the rear propeller shaft.  Refer to Rear

Propeller Shaft in this section.

2. Drain the rear axle oil.

DIFFERENTIAL (REAR 244mm)

4A2B–7

3. Remove flange nut and washer by using pinion flange

holder 5–8840–0133–0 after raising up its staked
parts completely.

415RW040

4. Remove flange.
5. Remove oil seal.
6. Remove outer bearing by using remover

5–8840–2323–0.

425RW066

7. Remove collapsible spacer.

Inspection and Repair

Make necessary correction or parts replacement if wear,
damage, corrosion or any other abnormal conditions are
found through inspection.
Check the following parts:

1. Seal surface of the pinion.
2. Cage bore for burns.

Installation

1. Install collapsible spacer, discard the used collapsible

spacer and install a new one.

2. Install outer bearing.

NOTE: Do not drive in, but just temporarily set in the outer
bearing by hand, which should be indirectly pressed in
finally by tightening the flange nut.

3. By using the seal installer 5–8840–2165–0, install a

new oil seal (1) that has grease on seal lip.

425RW050

4. Install flange.
5. Install flange nut and washer. Refer to Differential

Assembly in this section for flange nut reassembly.

NOTE: Discard the used nut and install a new one.