RS 4 Quattro Sedan V8-4.2L (BNS) (2007)
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Companion Flange: Service and Repair
Rear Final Drive 0AR
Measure radial play at flange/driveshaft and mark
Special tools, testers and auxiliary items required
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Dial gauge holder VW 387
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Dial gauge
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Bolt M10x30
Note:
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Radial run-out must always be measured if the flange/driveshaft at rear final drive was removed. For this, make new color marking and remove old
color marking.
If a new driveshaft is installed and the color marking on the drive flange of the rear final drive is no longer visible, location of largest radial run-out
(corresponding to greatest distance from turning axis) must be determined and marked with a color marking.
This color marking - arrow A - is set opposite the color marking on the driveshaft - arrow B -.
Radial run-out can be measured with rear final drive installed.
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Remove driveshaft from rear final drive.
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Secure measuring tools with bolt - A - (M10x30) to rear final drive.
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Set dial indicator onto ground diameter in inside of driveshaft flange - arrow - and set to "0" with 1 mm preload.
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Rotate both rear wheels simultaneously in one direction and thereby turn flange through one complete rotation.
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Mark largest radial run-out on outer edge of flange with colored marking (equivalent to largest distance from turning axis).