1999 AUDI A4 01V Transmission Drive Shaft Service Workshop Manual

- Turn differential gear via both rear wheels (left and right flanges) at the
same time in one direction until drive flange/driveshaft flange has made
on complete revolution.
- Mark largest radial run-out on outer edge of flange with colored
marking (equivalent to largest distance from turning axis).
- Remove old marking on driveshaft flange.
- Installing driveshaft page 39
-83
.
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Driveshaft, adjusting


Special tools and equipment

Adjustments must be made very carefully as a poorly adjusted driveshaft
is usually the cause of vibrations and humming noises.
Repair Manual, Engine Mechanical, Repair Group 26; removing and
installing exhaust system
3405 alignment fixture
- Observe notes page 39
-73
.
- Remove crossmember below exhaust system if installed.
- Remove rear part of exhaust system starting at clamp to gain access to
the driveshaft: - Remove heat shields above driveshaft.
- Release mounting bolts for center support slightly.
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Only for carbon fiber driveshafts:

Spacer pieces are attached to 3405 alignment fixture via a chain.
Arrow -A- points in direction of travel.
WARNING!
Assembly tool must rest on both steel rings -1- before tightening
plastic nut -A-. If that is not the case, the surface of the carbon fiber
driveshaft can be damaged and must be replaced see Important
notes page 39
-74
- Place spacer pieces -2- onto 3405 alignment fixture (distance
dimension = 10 mm).
- Using spacer pieces -2-, hook in 3405 alignment fixture according to
illustration.

Note:
Never set alignment fixture on balance plates. - Carefully tighten plastic nuts -A- and -B-.
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For all driveshafts except for carbon fiber
driveshafts:

Note:
Never set alignment fixture on balance plates.
For all driveshafts, also for carbon fiber driveshafts: - Attach 3405 alignment fixture and tighten plastic nuts.
- Remove center support mounting bolts and adjustment shims.

Parts-catalog - Align driveshaft center support so that distance -a- (left side) is equal to
distance -a- (right side).
- Measure distances -a-.
- Determine adjustment shims according to table. Part numbers
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Available adjustment shims

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

- Install left and right shims determined from
table.
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Centering driveshaft lengthwise

- Slide driveshaft with alignment fixture toward rear to stop.
- Mark position of center support on body (arrow A).
- Slide driveshaft with alignment fixture toward front to stop.
- Mark position of center support on body -(arrow B).
- Center driveshaft (arrow C):

Center support must be centered between markings -A- and -B-.
- Install mounting bolts for driveshaft center support and the pre-
determined shims and tighten.
- Remove alignment fixture.
- Install heat shield above driveshaft.
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Installation is reverse of removal, noting the
following:

- Install exhaust system free of stress:

Repair Manual, Engine Mechanical, Repair
Group 26; removing and installing exhaust
system
Tightening torques

Component
Nm
Center driveshaft support to body 23
Crossmember to body 25
Nuts for clamping sleeve 40
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