AUDI A4 1998 B5 / 1.G 01A Transmission Differential Remove And Install Workshop Manual

39-16


Differential, removing and
installing

Special tools and equipment

VW771 slide hammer-complete set
3257 plug insert 27 mm
21/3 Kukko extractor

Notes:
Removing and installing the differential is
possible with the transmission installed.
The differential can be removed and installed
without disassembly of the shift mechanism,
drive axle, pinion shaft, and cover. Disassembly
of the above mentioned parts is necessary, if
the differential needs to be adjusted.
Transmission code CXF: drive flanges are
installed without polygon bearings.
Polygon bearing can be replaced only with the
drive flange.

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Check for visible damage to polygon bearing.
The rough surface of the polygon bearing (with
drive flange not installed) is not an indication
that the bearing is defective. An acoustic test is
possible only when installed.
For drive flanges with a spline diameter of 30
mm (1.181 in) a spacer ring is installed between
polygon bearing and tapered bearing Page 39
-20
, Fig. 4
, item -5-.

When replacing the parts identified with1),
adjustment work is required List of
adjustments, Page 39
-39
.
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39-17


1 -
Transmission housing1)
2 -
Seal
Always replace Page 39
-1
3 -
Circlip
Always replaceRemoving and installing Fig. 1
4 -
Spacer ring
Only installed on drive axles with polygon
seals and spline diameter of 30 mm (1.181
in) Removing Fig. 2Installing Fig. 3
5 -
Drive flange
Removing and installing Page 39
-1
Assembly Fig. 4
6 -
Differential with ring gear1)
Disassembling and assembling Page 39
-21

7 -
Cover for final drive1)
8 -
Torx bolt
25 Nm (18 ft lb)
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39-18


CAUTION!
Install the drive gear carefully onto the
differential without canting. Do not use force,
the drive gear can break easily. 9 -
Speedometer drive gear
Removing and installing Page 39
-14Pa
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39-19


Fig. 1 Removing and installing circlip
- Clamp drive flange in vise using protective jaws and remove circlip by
pressing new circlip -A- into groove.

Fig. 2 Removing spacer ring
A - Internal puller 18.5-23.5 mm, e.g. 21/3 Kukko extractor
- If spacer ring is tight, pull out using multi-purpose tool VW771 slide
hammer-complete set.
Pa
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g and installin
g
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39-20


Fig. 3 Installing spacer ring
- Drive in spacer ring up to stop, without canting.

Note:
The needle bearings (polygon bearings) do not turn easily when the drive
flanges are removed. This does not indicate that the bearings are
defective. Fig. 4 Drive flange assembly
1 - Drive flange
2 - Needle bearing (polygon bearing)
3 - Spacer ring
4 - Spacer ring
Installed on shafts with 30 mm (1.181 in.) spline diameter
5 - Circlip
Pa
ge 6 of 6 Differential, removin
g and installin
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.TM02.39.4