RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
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Push drive chain tensioner guide rail in direction of - arrow - and secure chain tensioner using Locking Pin T40071.
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Mark running direction of timing chain with paint.
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Remove bolts -1- and remove guide rail.
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Remove bolts -2- and -3- and remove sprocket with drive chain.
Installing
Installation is in reverse order of removal, note the following:
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Secure crankshaft in TDC position using crankshaft holder 3242.
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First, install left camshaft timing chain sprocket -2-.
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Install guide rail -1- with installed drive chain.