S8 Quattro Sedan V8-4.2L (AYS) (2002)
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Measure deepest distance -a- (flange to pinion) and -b- (flange to pinion nut).
These measurements are used to check installation.
Note:
The following work sequence is shown with the final drive removed for better representation.
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Install retainer 3028 and remove pinion nut.
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Pull off flange using puller VW 391