transmission AUDI A4 1999 B5 / 1.G 01V Transmission Drive Pinion And Ring Gear Adjust Workshop Manual

39-170
Adjustment overview

Note:
When working on transmission, drive pinion or gear set only need to be adjusted if components were replaced which directly
influence the final drive. Note the follow table to prevent unnecessary adjustments:

Component to be adjusted:

Component replaced:

Ring gear
"S1"+"S2"
1)

page 39
-186

Drive pinion
"S3"
1)
via deviation "r"
page 39-177

Backlash
Checking

page 39
-192

Final drive housing X X X
Differential housing X X
Tapered roller bearing for drive pinion X X
Tapered roller bearing for differential X X
Gear set
2)
X X X
Cover for final drive X X
1) Adjustment shims; Installed position page 39
-171

2) Drive pinion and ring gear; only replace together as a set
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39-176



3253 wheel bearing assembly set with 3253/3
and 3253/4
3304 retainer
Engine/transmission jack VAG1383A
engine/gearbox jack
Dial gauge extension 30 mm
Dial gage
Torque gauge 0 - 600 Ncm
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pinion and rin
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justin
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39-177

Drive pinion, adjusting


Notes:

Before adjusting drive pinion, adjust ring gear
(determine total shim thickness "S" total" for
adjustment shims "S1" + "S2") page 39
-186
.

Drive pinion only has to be adjusted again if
gear set, tapered roller bearings for drive pinion
or final drive housing was replaced. Adjustment
overview page 39
-170
.

Do not grease new tapered roller bearings
additionally for friction torque measurement.
The bearings are already greased with a
special oil from the factory.

Determining Shim "S3"
(adjust preload of tapered roller bearing for drive
pinion)

- Clamp final drive into engine and transmission
assembly stand page 39
-123
.

Note: - Pull large tapered roller bearing outer race into housing.
Pa
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pinion and rin
g gear, ad
justin
g
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39-179


- Install 3304 retainer using two hex bolts M8 x 30.
- When tightening nut, support final drive (e.g. using VAG1359/2
universal mount with VAG1383A transmission hoist).
- Always replace drive pinion nut.
- Tighten nut for drive pinion until no more drive pinion backlash is
present.
- Increase tightening torque further until specified friction torque is
attained; while tightening measure friction torque multiple times.

1) have been run in at least 50 km A - Standard torque gauge, 0 to 600 Ncm
B - Extension with 32 mm wrench socket
- Adjust to following friction torqueNew bearings
Run-in bearings
1)
200 to 250 Ncm 30 to 60 Ncm
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pinion and rin
g gear, ad
justin
g
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yp
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39-192

Adjusting backlash
(position of ring gear in transmission housing)

Drive pinion installed with shim S3
Differential installed with shims "S1*" and
"S2*"

- Insert differential into final drive housing, install
cover and tighten all bolts to 25 Nm.

- Turn differential 5 rotations in each direction to
seat the tapered roller bearing.

- Install measuring tools.
- Use VW382/10 extension pin, 6 mm.
- Set VW388 measuring lever to dimension "a" = 60 mm.
- Determine backlash between teeth flanks as follows:
- Turn ring gear until it contacts a tooth flank (end of backlash travel).
- Set dial indicator to 0 with 1 mm preload.
Pa
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pinion and rin
g gear, ad
justin
g
11/20/2002 htt
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.AT01.39.15