Camshaft timing chains, removing from camshafts: Removing

WARNING: This page is about a different car, the 2010 Audi A8, 2009 Audi A8, 2008 Audi A8, and 2007 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

According to the following description, the timing chains for camshafts remain on engine.
Even if work is performed only on one of the cylinder heads, the procedure described must be followed, since the valve timing at both cylinder heads must be adjusted.

Remove cylinder head cover: left → Left cylinder head cover, removing and installing , right → Right cylinder head cover, removing and installing .
Remove left and right timing chain covers → Left and right timing chain covers, removing and installing .

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Insert guide pin of socket T40058 so that small diameter - arrow 2 - points to engine. Large diameter - arrow 1 - points to socket.

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Using Socket T40058, rotate crankshaft in direction of engine rotation - arrow - to "TDC".

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The threaded holes - arrows - in camshafts must face upward.

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Mount camshaft locating tool T40070 to both cylinder heads and tighten bolts - arrows - to 25 Nm.

The Camshaft Locating Tool T40070 is correctly positioned when holes for the cylinder head bolts remain free.

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Remove locking bolt - arrow - from upper part of oil pan.

CAUTION: Risk of injury when touching "TDC" hole with finger.

Do not rotate crankshaft - 1 -.

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Install crankshaft holder 3242 into hole to 20 Nm, if necessary rotate crankshaft very slightly back and forth to completely center the holder.

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Press left camshaft timing chain tensioner glide track inward with a screwdriver - 1 - as far as stop and secure chain tensioner with Locking Pin T40071.

NOTE:

The toothed belt tensioner is lubricated with oil and should only be compressed slowly by applying constant pressure.

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Press right camshaft timing chain tensioner glide track inward with a screwdriver - 1 - as far as stop and secure chain tensioner with Locking Pin T40071.

NOTE:

The toothed belt tensioner is lubricated with oil and should only be compressed slowly by applying constant pressure.

For re-installation, identify installation location of camshaft adjuster with paint.

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Remove bolts - 1 and 2 - on left cylinder head and remove both camshaft adjusters.

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For re-installation, identify installation location of camshaft adjuster with paint.
Remove bolts - 1 and 2 - on right cylinder head and remove both camshaft adjusters.