S5 Quattro Coupe V8-4.2L (CAUA) (2009)
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Remove the bolts - 1 - and - 2 - and the secondary air combination valve.
‹› Ignore - item 3 -.
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Remove the bolts - 1 through 8 - and remove the right timing chain cover with bracket - arrow - for the oxygen sensors electrical connectors.
Installing
‹› Tightening specifications => [ Right timing chain cover, tightening specifications and sequence ] See: Timing Chain Covers Assembly Overview.
‹› Replace O-rings.
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Remove old sealant form the grooves in the timing chain cover as well as from the sealing surfaces.
CAUTION!
Risk of contaminating lubricating system.
‹› Cover open parts of engine.