oil AUDI A8 1998 D2 / 1.G 01V Transmission Front Final Drive Service Workshop Manual

39-11

- Remove right drive flange.

Installing - Drive flange seal, pulling out.
- Coat outer edge of oil seal with gear oil.

- Drive in new seal to stop, without canting.

Installation position: The open side of the seal faces the
transmission.
- Install right drive flange.
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39-12


Repair Manual, Suspension, Wheels, Steering, Repair Group 40; Drive
axle, removing and installing

Tightening torques - Install bolt for drive flange (arrow, 23 Nm) while securing drive flange
against turning, using a drift.
- Install drive axle.
- Install heat shield for right drive axle.
- Checking oil level in front final drive page 39
-1 .
Component

Nm
Drive flange to transmission 23
Drive axle to drive flange M10 77
Driveshaft to drive flange M8 39
Heat shield for driveshaft to transmission
23
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39-14



2040 press tube
3384 assembly mandrel
VAG1306 drip tray
VAG1358A - oil siphoning unit
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39-15

Remove left drive flange

- Loosen bolt drive axle/wheel hub while the
vehicle is still standing on its wheels.

- Remove wheel.

- Removing left drive axle:

Repair Manual, Suspension, Wheels,
Steering, Repair Group 40; Drive axle, removing and installing


- Place VAG1306 drip tray underneath.

Note:
Oil must be syphoned from final drive, otherwise there is a risk that the
gear oil could mix with the ATF. - Remove oil filler plug (arrow) and syphon off at least 0.5 L gear oil from
final drive using VAG1358A.
- Remove heat shield for left drive axle.
- Remove Speedometer Vehicle Speed Sensor (VSS) page 38
-35
.
-
Remove harness connector bracket from mounting bracket for drive
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39-20

Installing seal

- Coat outer edge and sealing lip of oil seal with
gear oil.

- Drive in new seal to stop, without canting.

Installation position: The open side of the seal faces the
transmission.

Note:
If necessary, coat contact surface with grease to affix drive wheel in
installation position. - Set Speedometer Vehicle Speed Sensor (VSS) -G22- on drive flange
(arrow).

Installation position: The carriers at drive wheel must engage in
grooves of drive flange
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39-22

Installing left drive flange.

- Replace O-ring (arrow B) in drive flange mounting bracket.

Note:
When sliding in, left drive flange must be carefully guided by hand to
prevent damage to the double seal in transmission.
Repair Manual, Suspension, Wheels, Steering, Repair Group 40; Drive axle, removing and installing
- Check drive flange for sharp edges on transmission side of flange end
and if necessary, deburr.
- Insert left drive flange into transmission.
- Install drive axle.
- Install heat shield for left drive axle.
- Checking oil level in front final drive page 39
-1 .
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39-28


Final drive to transmission housing seal,
replacing

Special Tools and equipment

VW681 extractor lever
3383 double seal installer
VAG1306 drip tray
VAG1358A - oil siphoning unit
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39-29

Notes:

A faulty seal lets ATF or gear oil escape into the
converter housing via the center vent of the
shaft seal (between the two sealing lips).
In addition, a faulty seal can let ATF escape
into the center differential. It over-fills and oil
escapes at the differential vent.

Removing

- Loosen bolt drive axle/wheel hub while the
vehicle is still standing on its wheels.

- Remove front wheels.

- Remove heat shield for right drive axle.

- Remove drive axles:

Repair Manual, Suspension, Wheels,
Steering, Repair Group 40; Drive axle, removing and installing

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39-30


- Remove bolt for flange shaft (arrow) while securing against turning
using a drift.
- Using VAG1358A oil siphoning unit, siphon gear oil from the final drive.
- Place VAG1306 drip tray underneath.
- Remove right drive flange.
- Remove right transmission support page 37
-125
.

- Remove bolts for final drive cover opposite of shown tightening
sequence and remove cover.
- Pull out differential and remove.
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39-34


Tightening sequence:
Repair Manual, Suspension, Wheels, Steering, Repair Group 40; Drive axle, removing and installing
- Install cover for final drive.
1. Stage: Tighten bolts 1 to 3 by hand2. Stage: Tighten bolts 1 to 12 in mentioned sequence to tightening
torque.
- Install right drive flange.
- Install right transmission support page 37
-125
.
- Installing drive axles: - Top-up and check gear oil in front final drive page 39
-1 .
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