S5 Quattro Coupe V8-4.2L (CAUA) (2009)
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Remove the differential.
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Pry the left flange shaft seal out.
Installing
Install in reverse sequence; note the following points:
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Lightly oil new seal on outer circumference.
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Drive the new left flange shaft seal in as far as the stop without tilting it.
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Fill area between sealing lip and dust lip halfway with sealing grease (G 052 128 A1).
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Set differential in place.