1997 AUDI A4 01A Transmission Front Differential Assembly Workshop Manual

39-21


Front final drive differential,
disassembling and
assembling

Special tools and equipment

VW295 needle bearing drift
VW401 thrust plate
VW402 thrust plate
VW407 punch
VW408A punch
VW447H thrust pad
VW447I thrust pad
VW472/1 pressure piece
VW511 thrust pad
30-11 thrust pad
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30-205 thrust pad
40-21 sleeve
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39-22

40-105 thrust piece
3138 drift
3144 press support
3296 tube
Sealant AMV 188 000 02
Kukko 20/10 two-arm puller or Kukko 44/2
puller
Kukko 204/2 two-arm puller

Notes:
Differential, removing and installing Page 39
-
16
.

Replace both tapered roller bearings
together.
When replacing parts identified with(*),
adjustment work is required List of
adjustments, Page 39
-37
.
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39-23


1 -
Transmission housing*
2 -
Adjustment shim S2
Note thicknessList of adjustments Page 39
-37
3 -
Right tapered roller bearing outer race*
Tapered roller bearings on left and right are
identical (not for transmission code CXF) Removing Fig. 1Pressing in using VW472/1 special tool and
VW408A punch Fig. 2

Install using VW295 needle bearing drift
and 30-205 thrust pad (transmission code
CXF)
4 -
Right tapered roller bearing inner race* Tapered roller bearings on left and right are
identical (not for transmission code CXF) Removing using 3296 tube Fig. 3Installing Fig. 4Transmission code CXF: installl using 40-
21 sleeve
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39-24


5 -
Ring gear*
Is matched to pinion shaft (gear set)Allocate by transmission code parts
catalog, Page 00
-3
Remove from differential housing using a
drift Fig. 9

Installing on differential housing Fig. 10
6 -
Differential housing*
Allocate by transmission code parts
catalog Transmission identification Page 00
-3
7 -
Ring gear bolt
Always replaceLightly tighten bolts, then tighten diagonally
to correct torque 60 Nm (44 ft lb) + 1/4-turn (90 )
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39-25


CAUTION!
Install drive gear carefully onto differential,
without canting. Do not use force, the drive gear
can break easily. 8 -
Left tapered roller bearing inner race*
Tapered roller bearings on left and right are
identical (not for transmission code CXF) Removing Fig. 5Installing using 3296 tube Fig. 6Transmission code CXF: install using 40-
21 sleeve
9 -
Speedometer drive gear Removing and installing Page 39
-14
10 -
Left tapered roller bearing outer race*
Tapered roller bearings on left and right are
identical (not for transmission code CXF) Removing Fig. 7Pressing in using VW472/1 special tool and
VW408A punch Fig. 8

Press in using 40-21 sleeve (transmission
code CXF)
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39-26


11 -
Adjustment shim S1
Note thicknessList of adjustments Page 39
-37
12 -
Differential cover*
13 -
Large differential bevel gear
Installing Fig. 11
14 -
Differential bevel gear shaft
Drive out using drift, after removing roll pin
15 -
Roll pin For securing differential bevel gear shaftVersion with annular groove, removing and
installing Fig. 12

Version without annular groove, drive out
using drift
16 -
Small differential bevel gears Installing Fig. 11
17 -
Thrust washer assembly
Coat with transmission oil when installing
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39-27


Fig. 1 Removing small tapered roller bearing outer race from
transmission housing
- Turn webs -A- and -B- out until they sit on outer race within recess in
transmission.
- After removing, check shims for damage.

Note:
Transmission code CXF: use 30-205 thrust pad and VW295 needle
bearing drift. Fig. 2 Installing right tapered roller bearing outer race into
transmission housing
- VW472/1 pressure piece is installed with cone in outer race.
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