S8 Quattro Sedan V10-5.2L (BSM) (2009)
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Disconnect electrical connectors - 1 - and - 2 - at right locking flange.
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Mark the fuel return line - 1 - and fuel supply line - 2 -.
CAUTION!
Fuel system is under pressure! Before opening system, place clean rags around the connection. Then release pressure by carefully
loosening the connection.
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Pull both lines from locking flange, by pressing the release buttons.
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Remove locking ring with Wrench (T10202).