Valve Timing, Checking: Procedure

WARNING: This page is about a different variant/trim than selected.

-- Unclip and remove the cover -1- upward from the retainers -arrows-.

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Vehicles With Secondary Air System

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-- Disconnect the air line -1 and 2- from the damper -3-. To do so, press the locking rings -arrows- together on both sides and disconnect the lines.

-- Remove the damper -1- upward from the rubber bushings -arrows-.

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-- Separate the air connection line from the connection.

Continuation For All Vehicles

-- 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.

-- Remove the bolts -arrows- and then remove the crankcase ventilation hose -1-.

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-- 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 -A through D- and move the coolant thermostat cover -1- to the side.

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

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NOTE:

Risk of chemical damage to the coolant pump seal from oil entry between the coolant pump and the cylinder head.

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

-- Drain the coolant. Refer to COOLANT, DRAINING AND FILLING .

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.

NOTE:

The :T10340 locks the crankshaft only in direction of engine rotation.

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".

NOTE:

It must be easy to insert the :T10494 .

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

If the :T10494 cannot be inserted easily:

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-- Remove the upper toothed belt guard. Refer to UPPER TOOTHED BELT GUARD, REMOVING AND INSTALLING .

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

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

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-- 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.

Further assembly is performed in reverse order.

Replace the bolts that were tightened with an additional turn.
Replace the seal for the plug if it is damaged.