Opel Frontera UBS. Service manual — part 116
4A2A–20 DIFFERENTIAL (REAR 220mm)
425RS039
DIFFERENTIAL (REAR 220mm) 4A2A–21
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
4A2A–22 DIFFERENTIAL (REAR 220mm)
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
DIFFERENTIAL (REAR 220mm) 4A2A–23
Clearance between the side gear and the
differential box:
Standard: 0.05–0.12 mm (0.002–0.005 in)
Limit: 0.15 mm(0.006 in)
425RS046
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:0.5m (0.02 in)
425RS047
Reassembly
1. Install thrust washer.
2. Install side gear.
3. Install the pinion gear by engaging it with the side
gears while turning both pinion gears simultaneously
in the same direction.
425RS048
4. Install cross pin.
1. Be sure to install the cross pin so that it is in
alignment with the lock pin hole in the differential
cage.
425RS049
2. Adjust the backlash between the side gear and
the pinion gear.
Backlash:0.13 – 0.18 mm (0.005– 0.007 in)
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