RS 4 Quattro Sedan V8-4.2L (BNS) (2007)
Companion Flange: Service and Repair
Rear Final Drive 01R
Drive shaft flange, measuring and marking radial run-out
Special tools, testers and auxiliary equipment required
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Universal dial indicator bracket VW 387
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Dial indicator
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Bolt M10 x 85
Note:
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The radial run-out must always be measured when the drive shaft flange on the rear final drive has been removed. Affix a new colored dot and
remove the old color marking.
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If a new drive shaft is installed and if the marking on the flange shaft of the rear final drive is no longer visible, the position of maximum radial
run-out must be determined and marked by a colored dot.
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The colored dot on the drive shaft is positioned opposite the above colored dot.
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The radial run-out can be measured when rear final drive is installed but the drive shaft must be disconnected at rear final drive.
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Secure universal dial indicator holder VW 387 with dial indicator at rear final drive.
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Position dial indicator on ground diameter in drive shaft flange -arrow- and set to "0" with 1 mm preload.
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Rotate differential by turning the two rear wheels (left and right-hand flange shafts) simultaneously in one direction until the drive shaft flange has
undergone one complete revolution.
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Mark the position of greatest radial run-out on flange exterior by a colored dot (equates to greatest distance from rotational axis).
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Remove old marking from drive shaft flange.
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Install drive shaft.