Valve Timing, Checking: Procedure

-- Remove the noise insulation. Refer to NOISE INSULATION .

-- Remove the resonator for the intake air scoop. Refer to INTAKE AIR SCOOP RESONATOR, REMOVING AND INSTALLING .

-- Remove the air duct pipe. Refer to AIR DUCT PIPE, REMOVING AND INSTALLING .

-- Push the release button and remove the hose -1- from the EVAP canister.

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-- Remove the bolts -arrows- and then remove the crankcase ventilation hose.

-- Remove the turbocharger connection. Refer to TURBOCHARGER, REMOVING AND INSTALLING .

-- Release the connector from the Ignition Coil 4 with Power Output Stage -N292- and remove -item 18) COMPONENT LOCATION OVERVIEW - INJECTION SYSTEM -.

-- Free up the wiring harness -arrows-.

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-- Remove the bolts -1 and 3- and remove the toothed belt guard -2- for the coolant pump toothed belt.

-- Remove the bolts -arrows- and the cover -1-.

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-- Cover the coolant pump with a clean cloth to catch escaping oil.

Turn The Crankshaft To "TDC" As Follows 

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-- Remove the Ignition Coil 1 with Power Output Stage -N70- and the cylinder 1 spark plug. Refer to OVERVIEW - IGNITION SYSTEM .

-- Insert a screwdriver with a shaft length of at least 250 mm into the spark plug shaft until it rests on the piston crown.

-- Turn the crankshaft in the direction of engine rotation until the cylinder 1 piston is in "BDC".

The screwdriver moves in the direction of -arrow- during this.

-- Continue turning the crankshaft in the direction of engine rotation until the screwdriver has moved -30 mm- in the direction of -arrow-.

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-- Remove the plug for the "TDC" hole in the cylinder block.

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-- Install the :T10340  all the way into the cylinder block and tighten to 30 Nm.

-- Turn the crankshaft all the way in direction of engine rotation.

• The locking pin is touching the crankshaft counterweight.

There Is a Risk of Damaging the Engine.

• If the :T10340  cannot be installed all the way, then the crankshaft is not in the correct position.
• In this case, proceed as follows:
• Remove the locking pin.
• Turn the crankshaft 90° in the direction of engine rotation.
• Install the :T10340  all the way into the cylinder block and tighten to 30 Nm.
• Continue to turn the crankshaft in the direction of engine rotation until it stops.

• The asymmetrical grooves -upper arrows- on the transmission side on both camshafts must now face upward.
• The grooves -arrows- on the exhaust camshaft -A- are accessible through the holes in the drive wheel for the coolant pump.

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• The grooves -arrows- on the intake camshaft -E- are above the center of the camshaft.

A - Exhaust Camshaft

E - Intake Camshaft

-- If the camshafts are not positioned as described, remove the :T10340  and turn the crankshaft one turn farther and back to "TDC".

If the :T10494  cannot be inserted easily:

Vehicles With Two Camshaft Adjusters 

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-- Use the :T10487  to push on the toothed belt in the direction of -arrow-.

Vehicles With A Camshaft Adjuster 

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-- Use the :T10487  to push on the toothed belt in the direction of -arrow-.

Continuation For All Vehicles 

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-- Insert the :T10494  all the way into the camshafts while doing so.

-- Tighten the bolt -arrow- hand-tight.

If it is not easy to install the camshaft locating tool:

-- Adjust the valve timing. Refer to VALVE TIMING, ADJUSTING .

If is it easy to install the camshaft locating tool:

-- The valve timing is OK.

There Is A Risk Of Damaging The Engine 

• Make sure the :T10340  and the :T10494  are removed after completing the work.

Assembly is performed in reverse order.

• Replace the bolts that were tightened with an additional turn.
• Replace the O-ring for the plug if it is damaged.