Camshaft Timing Chain, Removing From Camshafts, Cylinder Bank 2 (Left): Removing

WARNING: This page is about a different car, the 2022 Audi SQ7. However, it is still accessible from the selected car via links, so may be relevant.

There are required preliminary procedures if the camshaft timing chain should be removed from the camshafts when the engine is installed. Refer to CAMSHAFT TIMING CHAIN, REMOVING FROM CAMSHAFTS .

CAUTION:

Risk of destroying the engine by adjusting the valve timing.

- Never turn the crankshaft and camshafts if the chain drive is not completely installed.

-- Remove the cylinder bank 2 upper timing chain cover. Refer to UPPER TIMING CHAIN COVERS, REMOVING AND INSTALLING .

-- Remove the vacuum pump. Refer to VACUUM PUMP, REMOVING AND INSTALLING .

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CAUTION:

Risk of damaging the engine by the timing mechanism skipping.

- Only let the engine turn in the direction of engine rotation.

-- Using the Wrench - 21mm: T40263 and Adapter: T40314 , turn the crankshaft -arrow- until the vibration damper is at "TDC".

The marks -1 and 2- on the camshaft adjusters must align with the corresponding locating tabs -arrows- on the camshaft housing. If necessary turn the crankshaft an additional turn.

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-- Pierce the exhaust camshaft plug -2- in the center with a bolt driver -1- in direction of -arrow- and carefully lift, at the same time do not damage the sealing surface. (Shown on the cylinder head bank 1).

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-- Tighten the Adapter: T40331/3 on the camshaft housing to 9 Nm.

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It must be easy to insert the Camshaft Lock: T40331/1 .

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Do not use a hammer to install the camshaft positioning tool.

-- Insert the prepared Camshaft Positioning Tool: T40331/1 all the way in the camshafts.

NOTE:

If necessary, the camshafts must carefully be positioned art the camshaft adjusters by a second person, using the Socket: VAS261001 and the Counterholder: T90001 .

The Camshaft Positioning Tool : T40331/6 engages as shown in the flattened section -2- on the intake camshaft.
The Camshaft Positioning Tool : T40331/7 engages as shown in the flattened section -1- on the exhaust camshaft.

-- Tighten the bolts -arrows- to 9 Nm.

TIP:

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The Counter Holder: T90001 can only be inserted in one position

CAUTION:

There is a risk of damaging the camshaft if handled incorrectly.

- Never use the camshaft positioning tool as a counterholder.

-- To counterhold on the affected camshaft adjuster, position the Counterholder: T90001 with Socket: VAS261001 , and loosen the control valve -1- with the Socket E24: T90000 .

-- For reinstallation mark the camshaft adjuster to the camshafts using paint.

Procedures, where the engine is NOT removed:

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-- Insert the Locking Pin: T10492 on the groove -1- in the vibration damper all the way in the hole -arrow- in the belt pulley side sealing flange. If necessary push the crankshaft slightly back and forth.

Procedure, if the engine is removed due to preliminary work.

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-- Remove the plug.

-- Install the Crankshaft Locking Pin: T40069 in the hole and tighten to 20 Nm. If necessary push the crankshaft slightly back and forth.

Continuation:

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-- Turn back the guide rail -2- in direction of -arrow- and pistons from the chain tensioner -1- using the Locking Pins: T03006 .

TIP:

The piston is lubricated with oil and can only be pushed back slowly by applying constant pressure.

-- Remove the control valves -1 and 2- and remove both camshaft adjusters.

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