ECU AUDI A4 1999 B5 / 1.G 01A Transmission Total Shim Thickness Workshop Manual

39-41


Speedometer Vehicle Speed
Sensor (VSS), removing and
installing

Total shim thickness Stotal for
shim S3 + S4, determining
Adjust preload of tapered roller bearings for
pinion shaft with hollow shaft

Differential removed

Note:
Illustration shows hollow shaft without gears. The adjustment of the pinion
shaft can be done with or without gears. - Press inner race -1- for double tapered roller bearing onto pinion shaft
and secure Page 35
-21
.
- Position needle bearing -2-.
- Install circlip 3 onto hollow shaft and press on inner race for tapered
roller bearing -4- Page 35
-21
.
- Insert pinion shaft in hollow shaft.
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39-46


- Install measuring tools and secure to transmission housing using bolt
(arrow).
- Set dial indicator (3 mm measuring range) to "0" with 2 mm preload.
- Loosen transmission cover bolts and turn pinion shaft several times.
- If correct shims have been selected, dial indicator will now indicate the
following value:
0.05-0.15 mm
- Tighten transmission cover bolts again to 22 Nm (16 ft lb).
- Remove measuring tools.
- To settle tapered roller bearings, rotate pinion shaft together with
hollow shaft 5 turns in each direction, then rotate pinion shaft
separately in relation to hollow shaft 5 turns in each direction.
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pair&id=AUDI.B5.TM02.39.7

39-56

- Press tapered roller bearing outer race with shim
S4 into transmission cover Fig. 8, Page 35
-
33
.

- Reinsert assembled pinion shaft into
transmission housing fully.

- Install transmission cover and tighten bolts to 22
Nm (16 ft lb).

- To settle tapered roller bearings, rotate pinion
shaft together with hollow shaft 5 turns in each
direction, then rotate pinion shaft separately in
relation to hollow shaft 5 turns in each direction.

If correct shims have been selected, dial indicator will now indicate
following value:
0.05-0.15 mm
If this reading is not obtained the adjustment must be corrected. - Install measuring tools and secure with bolt (arrow) to transmission
housing.
- Set dial indicator (3 mm measuring range) to "0" with 2 mm preload.
- Loosen transmission cover bolts and turn pinion shaft several times.
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ge 19 of 34 Total shim thickness Stotal for shim S3 + S4, determinin
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play?action=Goto&t
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pair&id=AUDI.B5.TM02.39.7

39-63

Measuring backlash
Position of ring gear in transmission housing

Pinion shaft with shims S3* and S4* installed

- Install differential.

- Turn differential 5 turns in each direction to
settle tapered roller bearings.

- Secure VW387 dial indicator holder onto housing.
- Attach VW521/4 locking sleeve and VW521/12.
- Install dial indicator and VW382/10 extension pin (6 mm flat).
- Adjust VW388 measuring lever to dimension -a-:
Distance -a-: 67 mm (2.637 in.) for 170 mm (6.693 in.) diameter ring
gear.
- Determine play between teeth flanks as follows:
- Turn ring gear until it makes contact with tooth flank (end of backlash
travel).
- Set dial indicator to "0" with 2 mm preload.
- Turn ring gear back against opposite tooth flank (backlash).
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ge 28 of 34 Total shim thickness Stotal for shim S3 + S4, determinin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.TM02.39.7