Camshaft timing chains, removing from camshafts: Installing

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.

Tightening torques → Camshaft timing chain, assembly overview , → Upper part of oil pan, assembly overview .

NOTE:

Replace bolts which have been tightened to torque.
Replace locking bolt O-ring.

CAUTION: Risk of damaging valves and piston crowns.

If camshafts are rotated, crankshaft may not rest with any piston at "TDC".

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Drive chain for timing mechanism installed → Drive chain for timing mechanism, removing and installing .
Secure crankshaft in "TDC" position using Crankshaft Holder 3242.

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Camshaft Clamp T40070 mounted on both cylinder heads and fastened to 25 Nm - arrows -.

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Reinstall camshaft adjuster on left cylinder head according to mark applied during removal.
Place camshaft timing chain onto drive sprocket and onto camshaft adjusters and loosely thread in bolts - 1 and 2 -.

Both camshaft adjusters must be able to still be rotated on camshaft and must not tip.

Remove Locking Pin T40071.
Reinstall camshaft adjuster on right cylinder head according to mark applied during removal.

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Place camshaft timing chain onto drive sprocket and onto camshaft adjusters and loosely thread in bolts - 1 and 2 -.

Both camshaft adjusters must be able to still be rotated on camshaft and must not tip.

Remove Locking Pin T40071.

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Position Key T40079 on intake camshaft adjuster at left cylinder head.
Position Torque Wrench V.A.G 1332 with Open Ring Spanner Insert V.A.G 1332/9 on Key T40079.
Have a second technician pre-tension camshaft adjuster to 40 Nm in direction of - arrow -.
Tighten bolts as follows while camshaft adjuster is held under pre-tension:

Pre-tighten bolt - 1 - to intake camshaft to 60 Nm.
Pre-tighten bolt - 2 - to exhaust camshaft to 60 Nm.

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Position Key T40079 on exhaust camshaft adjuster at right cylinder head.
Position Torque Wrench V.A.G 1332 with Open Ring Spanner Insert V.A.G 1332/9 on Key T40079.
Have a second technician pre-tension camshaft adjuster to 40 Nm in direction of - arrow -.
Tighten bolts as follows while camshaft adjuster is held under pre-tension:

Pre-tighten bolt - 1 - to intake camshaft to 60 Nm.
Pre-tighten bolt - 2 - to exhaust camshaft to 60 Nm.

Remove Key T40079.

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Remove Camshaft Clamps T40070 on both cylinder heads - arrows -.

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Tighten camshaft adjuster bolts on left cylinder head as follows:

Tighten bolt - 1 - to intake camshaft to final torque.
Tighten bolt - 2 - to exhaust camshaft to final torque.

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Tighten camshaft adjuster bolts on right cylinder head as follows:

Tighten bolt - 1 - to intake camshaft to final torque.
Tighten bolt - 2 - to exhaust camshaft to final torque.

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Remove crankshaft holder 3242.

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Using Socket T40058 turn crankshaft two complete rotations in direction of engine rotation - arrow - until crankshaft stands at "TDC" again.

NOTE:

If rotated unitentionally beyond "TDC", crankshaft must be rotated back approx. 30° and set to "TDC" again.

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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 the holes for the cylinder head bolts remain free.

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Install Crankshaft Holder 3242 in bore and tighten to 20 Nm.

The crankshaft holder 3242 must engage in the locating hole of the crankshaft - 1 -, otherwise repeat adjustment.

Remove camshaft locating tools on both cylinder heads.
Remove crankshaft holder 3242.
Tighten "TDC" marking locking bolt.

The rest of the installation is in reverse order of removal, note the following:

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