1996 AUDI A4 01A Transmission Differential Assembly Workshop Manual

39-128


WARNING!
Wear protective gloves. Fig. 4 Installing small tapered roller bearing inner race
-
Heat bearing to approx. 100 C (212 F), install and press down.

Fig. 5 Removing large tapered roller bearing inner race
- Before installing extractor, position 40-105 thrust piece on differential
housing.
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39-129


WARNING!
Wear protective gloves. Fig. 6 Installing large tapered roller bearing inner race
-
Heat bearing to approx. 100 C (212 F), install and press down.

Fig. 7 Removing large tapered roller bearing outer race from final
drive cover
- After removing, check shims for damage.
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Fig. 8 Installing large tapered roller bearing outer race into final
drive cover

Fig. 9 Removing ring gear from differential housing
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39-131


WARNING!
Wear protective gloves. Fig. 10 Installing ring gear
- Use 2 centering pins -A- (locally available) as guides.
-
Heat ring gear to approx. 100 C (212 F) and install.

Fig. 11 Installing differential bevel gears
- If large differential bevel gears have been replaced, measure and
select new shims Fig. 12
.
- Insert large differential bevel gears with measured shims.
-
Install small differential bevel gears (turned 180 ) from their final
position, and rotate into place (arrow). - Install and align thrust washers.
- Insert threaded pieces.
- Drive differential gear shaft for bevel gears in to stop and secure with
roll pin.
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39-132


Note:
From this point on, do not interchange differential bevel gears and their
respective thrust washers. Fig. 12 Adjusting differential bevel gears
- Insert large differential bevel gears with thinnest shims (0.5 mm).
-
Insert small differential bevel gears (turned 180 ) together with thrust
washers. - Drive in differential bevelgear shaft.
- Press small differential bevel gears outward.
- Press large differential bevel gears in direction indicated (arrows), and
check play.
- Determine thickest shims for large differential bevel gears (on each
side) which still just fits.
- Shims for both sides should be of equal thickness.
- Identify shims according to table. Part numbers parts catalog
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The following shims are available:

Shim thickness (mm)
0.50 0.70 0.90
0.60 0.80 1.00

Note:

The adjustment is also correct if no further play is perceptible, as long as
the differential bevel gears can still be turned (arrow).
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