Opel Frontera UBS. Manual - part 992

4A2A–22 DIFFERENTIAL (REAR 220mm)

17.  Tighten the cap  bolt to the specified torque.

Torque: 108 N·m (11.0kg·m/80 lb ft)

425RS036

1. Measure the amount of run–out of the ring gear at

its rear face.

Standard: 0.02 mm ( 0.001 in)

Limit: 0.05 mm ( 0.002 in)

425RS037

Gear Tooth Contact Pattern Check and Adjustment

1. Apply a thin coat of prussian blue or equivalent

to the faces of the 7–8 teeth of the ring gear.
Check the impression of contact on the ring
gear teeth and make necessary adjustment as
described in illustration if the contact is
abnormal.

425RS038

Legend

(1) Heel
(2) Toe
(3) Concave Side(Coast)
(4) Convex Side(Drive)

DIFFERENTIAL (REAR 220mm) 4A2A–23

425RS039

4A2A–24 DIFFERENTIAL (REAR 220mm)

Differential Cage Assembly

Disassembled View

415RW034

Legend

(1) Pinion Gear
(2) Thrust Washer
(3) Side Gear
(4) Cross Pin

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

Disassembly

1. Remove bolt.
2. Remove ring gear.
3. Remove lock pin, break staking on the lock pin, using

a 5 mm (0.20 in) diameter drill.

425RS042

DIFFERENTIAL (REAR 220mm) 4A2A–25

4. Remove the cross pin, using a soft metal rod and a

hammer.

425RS043

5. Remove pinion gear.
6. Remove side gear.
7. Remove 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:

1. Ring gear, pinion gear
2. Bearing
3. Side gear, pinion gear, cross pin
4. Differential cage, carrier
5. Thrust washer
6. 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 agent.

3. When installing the ring gear, apply LOCTITE 271 or

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

4. Discard used bolts and install new ones.

Torque: 108 N·m (11.0kg·m/80 lb ft)

5. Tighten the fixing bolts in a diagonal sequence as

illustrated.

415RW036

Clearance between the differential pinion
and the cross pin measurement:

Standard: 0.06 – 0.12 mm (0.002–0.005 in)

Limit: 0.2 mm (0.008 in)

425RS045