RS 4 Quattro Sedan V8-4.2L (BNS) (2007)
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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).
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Then remove previous marking from flange.
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Install driveshaft => [ Driveshaft, securing to rear
final drive ] See: Service and Repair/Removal and Replacement/Rear Final Drive 0AR (02XA,0A3A,09EA,09LA Transmission)/Driveshaft,
Disconnecting From Rear Final Drive.