AUDI A4 1997 B5 / 1.G 01A Transmission Final Drive Flange Driveshaft Workshop Manual
Page 1 of 8
39-77
Drive flange/driveshaft radial
deviation, measuring and
identifying
Special tools and equipment
VW38 universal measurement bracket
2024A engine sling
Dial indicator
Bolt M10 x 85
Notes:
Radial deviation must always be measured,
when the torque tube is removed. Apply a new
color marking and remove the old one.
If a new driveshaft is installed and the color
marking on the drive flange of the final drive is
no longer visible, the location of the largest
radial deviation must be determined and
identified with a color marking.
This color marking is then matched with the
color marking on the driveshaft Page 39
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Page 2 of 8
The radial deviation can also be measured with
final drive installed, by separating driveshaft at
final drive. Notes Page 39
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Page 3 of 8
39-78
- Remove front left bolt at crossmember for final
drive.
- Remove strap from 2024A engine sling and tighten with bolt -2- (M10 x
85 mm) at open bore. Position strap using approx. 5 nuts (M12) for
backing -1-.
- Secure VW387 dial gauge holder onto strap mounted in this position.
- Place dial indicator on inside machined surface of drive flange (arrow)
and set to "0" with with 1 mm preload.
- Turn differential simultaneously in one direction by turning rear wheels
(drive flanges right and left), until drive flange makes complete rotation.
- Identify greatest radial deviation on outer drive flange with color
marking (corresponds to largest dimension from pivot axis).
- Remove old color marking on drive flange.
- Install driveshaft Page 39
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Page 4 of 8
39-79
Driveshaft, adjusting
Special tools and equipment
3298 alignment fixture for all wheel drive
driveshaft
3139/2 spacer
- Observe all cautions Page 39
-68
Adjustments should be carried out carefully,
because a badly adjusted driveshaft is often the
cause of vibration and droning noises.
- Remove crossmember below exhaust system, if
installed.
- Remove rear section of exhaust system located
rearward of exhaust pipe clamp(s).
Repair Manual, Engine Mechanical, Repair
Group 26
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Page 5 of 8
39-80
- Place two 3139/2 spacers in 3298 assembly tool.
Note:
Never install alignment fixture onto balance plates. - Mount 3298 assembly tool with two 3139/2 spacers and tighten plastic
nuts.
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Page 6 of 8
39-81
- Remove mounting bolts and shims of center
bearing.
The following shims are available - Align center driveshaft bearing so that dimensions -a- are same on
both sides.
- Measure dimensions -a-.
- Identify shims according to table. Part numbers parts catalogDimension -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 selected shims on both sides.
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Page 7 of 8
39-82
Aligning driveshaft longitudinally
The center bearing must be aligned centrally between markings -A- and -
B-. - Push driveshaft with alignment fixture toward rear as far as possible.
- Mark position of center bearing on body (arrow -A-).
- Push driveshaft with alignment fixture toward front as far as possible.
- Mark position of center bearing on body (arrow -B-).
- Align driveshaft (arrow -C-).
- Install mounting bolts for center driveshaft bearing together with
previously selected shims, and tighten.
- Remove alignment fixture.
- Install heat shield above driveshaft.
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Page 8 of 8
39-83
Installation is the reverse of removal, note the
following:
- Align exhaust system free of stress.
Repair Manual, Engine Mechanical, Repair
Group 26
Tightening torques
Component
Tightening
torque
Center bearing to body 23 Nm (17 ft
lb)
Front cross-member below
exhaust system to body
25 Nm (18 ft
lb)
Nuts on exhaust pipe clamp 40 Nm (30 ft
lb)
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11/20/2002 htt
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play?action=Goto&t
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e=re
pair&id=AUDI.B5.TM02.39.9