S4 V8-4.2L (BHF) (2004)
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Disconnect supply pipe -1- from locking flange (right side of vehicle).
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Disconnect breather pipe -2- (press release button).
CAUTION: The locking flange must only be opened with the fuel tank not more than 1/4 full. Otherwise a great amount of fuel flows out.
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Remove locking ring using wrench for fuel tank sender unit 3087.
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Remove flange and seal out of opening in fuel tank.
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Disconnect connector -arrow- for fuel gauge sender on inside of flange.
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Press retaining tab, and at the same time pull the sender out of baffle housing guide -arrows-.