Opel Frontera UBS. Manual - part 1002

4A2B–24

DIFFERENTIAL (REAR 244mm)

Differential Cage Assembly

Disassembled View

415RY00001

Legend

(1) Pinion Mate Gear
(2) Thrust Washer(for Side Gear)
(3) Side Gear
(4) Differential Shaft

(5) Ring Gear
(6) Bolt
(7) Differention Cage
(8) Lock Pin

DIFFERENTIAL (REAR 244mm) 4A2B–25

Disassembly

1. Remove bolt.
2. Remove ring gear.
3. Remove lock pin using a small drift.

425RY00002

4. Remove the differential shaft by using a hard metal

rod and a hammer.

425RS043

5. Remove pinion mate gear and thrust washer.
6. Remove side gear and thrust washer.

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:

D

Ring gear, pinion gear

D

Bearing

D

Side gear, pinion mate gear, differential shaft

D

Differential cage, carrier

D

Thrust washer

D

Oil seal

Ring gear replacement:

1. The ring gear should always be replaced with the

drive pinion as a set.

2. Clean the ring gear threaded holes to remove the

locking argent.

3. Discard used bolts and install new ones.
4. When installing the ring gear, apply LOCTITE 271 or

equivalent to all the threaded area and ha of the
unthreaded area of the bolt.

Torque: 127N·m (13.0kg·m/94 lb ft)

425RW033

Clearance between the differential pinion and the
pinion shaft measurement.

Standard: 0.07 – 0.13 mm (0.003 – 0.005 in)

Limit: 0.2 mm (0.008 in)

425RY00007

4A2B–26

DIFFERENTIAL (REAR 244mm)

Clearance between the side gear and the differential
box.

Standard: 0.032 – 0.105 mm (0.001 – 0.004 in)

Limit: 0.105 mm (0.004 in)

425RY00005

Legend

(1) Side gear
(2) Differential box

Play in splines between the side gear and the axle
shaft.

Standard: 0.07 – 0.38 mm (0.003 – 0.014 in)

Limit: 0.5 mm (0.02 in)

425RY00006

Reassembly

Differential cage
Thrust washer
Side gear
Pinion gear

1. Install the pinion gear by engaging it with the side

gears while turning both pinion gears simultaneously
in the same direction.

2. Install the pinion mate gear with thrust washer by

engaging it with the side gears while turning both
pinion mate gears simultaneously in the same
direction.

425RS048

3. Install differential shaft.

1. Be sure to install the differential shaft so that it is in

alignment with the lock pin hole in the differential
cage.

425RS049

DIFFERENTIAL (REAR 244mm) 4A2B–27

2. Adjust the backlash between the side gear and

the pinion gear.

Backlash: 0.15 – 0.20 mm (0.006 – 0.008 in)

Thickness of thrust washers available

mm

0.80

0.90

1.00

1.10

1.20

1.30

in

0.031

0.035

0.039

0.043

0.047

0.051

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4. Install lock pin.

D

Install the lock pin using small drift.

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5. Install exciter ring (If equipped with rear wheel

antilock).

D

Press the exciter ring on the differential cage using
the ring gear as a pilot.

NOTE: Discard used exciter ring and install new one.

425RS052

6. Tighten the bolts in diagonal sequence as illustrated.

Torque: 127N·m (13.0kg·m/94 lb ft)

NOTE: Discard used bolts and install new ones.

425RW033