Final Drive Assembly - Revised Sealing Parts

9225audi01

Group: 39

Number: 92-01

Date: February 29, 1992


Subject:
Automatic transmission 089
Final drive assembly, sealing

Model(s):
4000S 1980-87, 80/90 1988-91





When repairing a leaking final drive housing assembly on the 089 transmission, the following revised parts need to be installed. The revised parts are identified with an asterisk (*).


1. Front cover

^ coat sealing surface with Part No. AMV 188 200 03

^ sealing hole, Fig. 6

2. O-ring*

^ always replace
^ color coded: green


3. Pinion shaft seal*
^ removing, Fig. 3
^ installing, Fig. 4
^ with double lip around bead for pinion shaft, Fig. 2


4. Bolt with collar*

^ 30 N-m (22 ft.lb.) plus additional 1/8 turn (45~)
^ use correct bolt only


5. Sleeve*
^ replace previously used pins
^ installation depth, Fig. 7


6. O-ring*
^ for oil channel
^ always replace
^ color coded: green

7. O-ring*
^ always replace
^ color coded: green


8. Final drive housing
^ coat sealing surface and chamfered edge for pinion shaft cover with Part No. AMV 188 200 03, Fig. 5

9. Pinion shaft*
^ with bead for double-lip seal, Fig. 1





Fig. 1 Revised pinion shaft, identifying

A = revised pinion shaft with bead (arrow) for double-lip seal

B = previous pinion shaft without bead





Fig. 2 Revised pinion shaft seal, identifying

A = revised seal with double-lip (arrows) for revised pinion shaft

B = previous pinion shaft seal without double lip





Fig. 3 Pinion shaft seal, removing





Fig. 4 Pinion shaft seal, installing

- drive seal in fully

^ closed side of seal faces tool





Fig. 5 Final drive housing/rear cover, installing

- coat sealing surface of rear cover and fill chamfer of housing (arrow) with Part No. AMV 188 200 03





Fig. 6 Final drive housing/front cover, installing

When repairing the final drive, seal hole
(arrow 1) in front cover with plug
(arrow 2), Part No. 019 301 115





Fig. 7 Front cover sleeve, installing

- drive in sleeve up to dimension
a = 12 mm (0.47 in.)