1999 AUDI A8 01V Transmission Center Differential Service Workshop Manual

39-61

O-ring for driveshaft output flange,
replacing


Special tools and equipment

Removing
Repair Manual, Engine Mechanical, Repair Group 26; removing and
installing exhaust system
3402 pressure piece
- Remove front exhaust pipes:

- Unbolt heat shield for driveshaft from cover for Torsen differential
(arrows).
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39-62


- Unbolt driveshaft -1- from transmission and let rest on heat shield -2-
page 39
-79
, Driveshaft, removing and installing.
- Secure driveshaft using wire (arrow) at bracket -3- of fuel lines.
- Drain center differential gear oil page 39
-40
.

- Unbolt output flange while securing output flange against turning using
a drift.
- Pull out output flange.
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39-63


- Remove O-ring using appropriate screwdriver.
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39-64

Installing
Installation is reverse of removal, noting the
following:

Tightening torques - Drive O-ring in to stop using 3402 pressure piece.
- Secure output flange with socket-head bolt.
- Bolt driveshaft to transmission flange page 39
-79
, Driveshaft,
removing and installing.
- Fill transfer housing with gear oil and check oil level page 39
-40
.
Component
Nm
Socket-head bolt for rear drive flange 25
Heat shield for driveshaft to transmission 23
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39-65

Seal in intermediate flange for front final
drive, replacing


Note:

An inspection opening is provided on the left side of the intermediate
flange to check for oil leaks (arrow) for the seal in drive pinion and the
seal in intermediate flange.
If oil escapes at this inspection opening, this double seal must be
replaced.
Special tools and equipment

3404 thrust piece
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39-66

Removing

- Remove center differential page 39
-56
.

- Remove intermediate flange for front final
drive.

Installing
Installation is reverse of removal, noting the following: - Drive seal (arrow) out in direction of transfer gear using mandrel.
- Check seal seat in transmission housing for damage; rework if
necessary.

Note:
If installing the intermediate flange to the output shaft carelessly, the
sealing lip of the seal can be damaged. - Slide seal onto 3404 thrust piece so that the larger and projecting outer
ring (arrow) of seal faces tool.
- Drive in seal up to 3404 thrust piece stop.
- Install center differential page 39
-58
.
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39-67

Seal in drive pinion, replacing


Note:

An inspection opening is provided on the left side of the intermediate
flange to check for oil leaks (arrow) for the seal in drive pinion and the
seal in intermediate flange.
If oil escapes at this inspection opening, this seal must be replaced.
Special tools and equipment

Removing
3403 thrust piece
- Remove center differential page 39
-56
.
- Remove intermediate flange for front final drive.
- Carefully pull off drive pinion from driveshaft.
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39-68

WARNING!

Do not reinstall spur gears that have fallen to
the ground. The transmission must be
replaced in this case.

- Drive out seal using drift.

Installing
Installation is reverse of removal, noting the
following:

- Slide seal onto 3403 thrust piece.
- Drive seal in up to 3403 thrust piece stop.
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