AUDI A6 1999 C5 / 2.G 01E Transmission Final Driveshaft Service User Guide

39-72

- Adjust driveshaft after installing Page 39
-
75
.

- Align exhaust system free of stress.

Repair Manual, 2.7 Liter V6 5V BiTurbo
Engine Mechanical, Engine Code(s): APB, Repair Group 26; Removing and installing parts of exhaust system


Tightening torques

Component
Nm
Driveshaft to transmission
(output flange) 55
Driveshaft to final drive
(input flange) 55
Driveshaft center mounting to body 23
Heat shield for driveshaft to transmission 23
Cross member to body 25
Nuts for clamp 40
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39-73

Radial run-out at driveshaft flange and
marking, measuring


Special tools, testers and auxiliary items

Universal dial gauge bracket VW 387
Lifting tackle 2024 A
Dial gauge
M10 x 85 bolt

Note:
The radial run-out must always be measured
when the drive flange housing is removed.
Remove old paint marking and make new
marking.
If a new driveshaft is being installed and the
marking on the drive flange of the rear final
drive is no longer visible, the point of maximum
radial run-out must be measured with a dial
gauge and marked with paint.
The paint marking on the driveshaft is then
brought into alignment with this paint marking
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Page 39
-71
.

The radial run-out can be measured when the
rear final drive is installed, but the driveshaft
must be disconnected at the rear final drive.
Observe notes Page 39
-64
.
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39-74

- Remove bolt on front left of rear final drive
support.

- Remove bar from lifting appliance 2024 A and secure it to free hole
with an M10 x 85 mm bolt -2-. Use approx. 5 M12 nuts -1- as spacers.
- Secure dial gauge bracket VW 387 to the bar when it is secured in
position.
- Position dial gauge on ground circumference in driveshaft flange
(arrow) and set to zero with a preload of 1 mm.
- Turn differential via both rear wheels (left and right drive flanges) until
flange on rear final drive completes one rotation.
- Make a paint marking at point of greatest radial run-out on outside of
flange (= greatest distance from axis of rotation).
- Remove old marks on driveshaft flange.
- Install driveshaft Page 39
-71
.
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39-75

Driveshaft, adjusting


Special tools, testers and auxiliary items

Adjustments should be carried out with care, because a badly adjusted
driveshaft is often the cause of vibration and droning.
Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): APB, Repair Group 26

Assembly appliance 3405
- Observe notes Page 39
-64
.
- If fitted, remove cross-piece below exhaust system.
- Remove rear section of exhaust system (rearward of exhaust pipe
clamp(s)): - Remove heat shields above driveshaft.
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39-76

- Loosen securing bolts of center driveshaft
mounting slightly.

Note:
Never fit assembly appliance onto balance plates. - Attach assembly appliance 3405 and tighten the plastic nuts.
- Remove securing bolts and shims from center mounting.

Parts catalog - Align center driveshaft mounting so that distance -a- is the same on left
and right.
- Measure -a- on both sides.
- Select shims from table.
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The following shims are available:

Dimension -a-
(mm) Shim thickness
(mm)
0-3.0 -
3.1-5.0 2
5.1-7.0 4
7.1-9.0 6
9.1-11.0 8
11.1-13.0 10

- Install the correct shims on both sides.
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39-78

Aligning driveshaft longitudinally

- Using assembly appliance, push driveshaft toward rear as far as it will
go.
- Mark position of center mounting on body (arrow -A-).
- Using assembly appliance, push driveshaft toward front as far as it will
go.
- Mark position of center mounting on body (arrow -B-).
- Align driveshaft -arrow C-.

The center mounting must be positioned centrally between the
markings -A- and -B-
- Install securing bolts of driveshaft center mounting and previously
determined shims and tighten.
- Remove assembly appliance.
- Install heat shield above driveshaft.
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39-79
The remaining installation steps are carried out in
the reverse order of removal. Note the following
points:

- Align exhaust system free of stress.

Repair Manual, 2.7 Liter V6 5V BiTurbo
Engine Mechanical, Engine Code(s): APB, Repair Group 26


Tightening torques

Component
Nm
Driveshaft center mounting to body 23
Cross member to body 25
Nuts for clamps 40
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