S4 Quattro Cabriolet V8-4.2L (BHF) (2008)
Driving ring gear from housing
Heat ring gear to approximately 100 °C and install
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When installing ring gear, guide with centering pins - A - (self-made).
CAUTION!
Wear protective gloves!
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Before installing new screws, allow to cool off somewhat. Then tighten to specification.