AUDI A6 1999 C5 / 2.G 01V Transmission Front Final Drive Service Owner's Manual

39-24

Seal for front final drive, replacing


Special tools and equipment

Removing
Repair Manual, Engine Mechanical, Repair Group 26; removing and
installing exhaust system.
All Wheel Drive (AWD) vehicles:
VAG1383A engine/transmission hoist
- Remove right front exhaust pipe:
- Remove heat shield for selector lever cable.
- Remove center differential page 39
-56
.

- Remove bolts (arrows) at intermediate flange for front final drive.
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Front Wheel Drive (FWD) vehicles:

WARNING!
All:
Notes: - Remove bolts at cover for front final drive opposite of shown tightening
sequence.
- Place VAG1383A engine/gearbox jack with universal mount
underneath.
Slowly and carefully remove cover for front final drive from
transmission housing. The spur gears can otherwise fall out of
the transmission. Do not reinstall spur gears that have fallen to the ground. The
transmission must be swapped in this case.
- Lift off cover i.e. intermediate flange for front final drive.Do not remove spur gears for front final drive. Secure spur gears so
they do not fall out. If the spur gears for front final drive were removed, the wheel marking
must face outward (away from transmission) for re installation.
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Installing

All Wheel Drive (AWD) vehicles:
Note:
If installing the intermediate flange to the output shaft carelessly, the
sealing lips of the seal can be damaged. - Make sure centering sleeve -A-is correctly seated before installing.
- Install gasket
- Set on cover i.e. intermediate flange for front final drive.
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All:

Tightening sequence:
Note:
When tightening bolts by hand, make sure the housing gap between
cover and transmission housing decreases evenly around circumference.
All Wheel Drive (AWD) vehicles:
Tightening torques
1. Stage: Tighten bolts 1 to 3 by hand2. Stage: Tighten bolts 1 to 14 in mentioned sequence to tightening
torque.
- Check ATF level and top off page 37
-133
.
- Install center differential page 39
-58
.
Component
Nm
Cover for front final drive to transmission housing
23
Intermediate flange for front final drive to transmission housing
23
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Center differential to transmission housing 23
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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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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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- 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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Note:
Shim is pre-determined and must not be exchanged for a shim with
another thickness. - Remove tapered roller bearing outer race of differential -1- and shim -
2- which is behind it from transmission housing by hand.
- Remove left drive flange page 39
-13
.

Note:
Extractor lever must be positioned behind both sealing lips of the seal. Do
not position at outer circumference of seal, otherwise the contact surface
in transmission housing will be damaged. When levering out, carefully
guide extractor lever. - Pull out seal.
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Installing

- Check seal seat in transmission housing for
damage; rework if necessary.

- Coat outer circumference and sealing lip of seal
with ATF.

- Slide seal onto 3383 double seal installer so that the projecting sealing
lip (arrow) of seal faces tool.

- Drive in new seal to stop.
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