AUDI A4 1999 B5 / 1.G 01A Transmission Final Drive Flange Seal Workshop Manual

39-1


Drive flange seal, replacing

Transmission installed

- Observe general repair instructions Page 00
-
14
.

Special tools and equipment

VW195 arbor
VW295 needle bearing drift
VW681 extractor lever
VAG1306 drip tray

Notes:
Removal and installation of the left seal is
shown in the following illustration.
The procedure for left and right seal is the
same.
The exhaust system does not need to be
removed.
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Transmission code CXF: drive flanges are
installed without polygon bearings.
For drive flanges with a gear diameter of 30 mm
(1.181 in.) a spacer ring is installed between the
polygon bearing and the tapered bearing
Page 39
-4 .
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39-2

Removing

- Remove heat shield for drive axle.

- Remove drive axle from transmission drive
flange.

Repair Manual, Suspension, Wheels,
Steering, Repair Group 40.


- Turn steering as far to left as possible.

- Tie-up drive axle as high as possible. Do not
damage paint on drive axle.

- Place VAG1306 drip tray underneath
transmission.

- Place chisel or spacer -A- under drive flange.

Note:
If the drive flange does not come out easily, turn the drive flange and
insert a bolt in the hole on the opposite side to assist removal. - Turn bolt -B- to pull drive flange out of differential bevel gears.
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39-3


- Always replace circlip for drive flange.
- Clamp drive flange in vise using protective jaws and remove circlip by
pressing new circlip -A- into groove.
- Remove drive flange seal using VW681 extractor lever.
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39-4


Setup of drive flange with polygon bearing
Notes: 1 - Drive flange
2 - Needle bearing (Polygon bearing)
3 - Spacer ring
4 - Circlip
5 - Spacer ring (is installed additionally if spline diameter is 30 mm or
1.181 in.)
The rough surface of the polygon bearings with the drive flange not
installed is not an indication that the bearings are malfunctioning. An
acoustic check can only be carried out while installed. Watch for damage to the polygon bearings (e.g. cracks in bearing
outer rings). Polygon bearings can only be replaced together with the drive flanges.For drive flanges with a spline diameter of 30 mm (1.181 in.) a spacer
ring -5- is installed between the polygon bearing and the tapered
bearing.
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39-5

Installing

- Fill space between sealing lip and dust lip with
gear oil.

- Lightly oil outer circumference of seal.

Note:
If reinstalling an old drive flange, the new seal must be pressed in about
6.5 mm (0.256 in.), so that the new seal does not sit on the running
surface of the old seal. - Drive in right-hand drive flange seal 5.5 mm (0.216 in.) below outer
transmission housing surface using VW195 arbor, without canting.

Note:
If reinstalling an old drive flange, the new seal must be pressed in about
6.5 mm (0.256 in.), so that the new seal does not sit on the running
surface of the old seal. - Drive in left drive flange seal 5.5 mm (0.216 in.) below outer
transmission housing surface using VW195, without canting.
- Install drive flange using VW295 needle bearing drift.
- Bolt drive axle on drive flange.
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39-6

- Install drive axle heat shield.

- Check transmission oil level Page 34
-38
.

Tightening torques

Component

Nm (ft lb)
Drive axle to drive
flange M8 40 Nm (30 ft
lb)
M10 80 Nm (59 ft
lb)
Heat shields for drive axles 23 Nm (17 ft
lb)
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pair&id=AUDI.B5.TM02.39.1