Opel Frontera UBS. Service manual — part 1950
DIFFERENTIAL (REAR 244mm) 4A2B–23
16. Tighten the bolt to the specified torque.
Torque:108N·m (11.0kg·m/80 lb ft)
425RS036
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)
425RS039
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
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