Valve Timing, Checking

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Special tools and workshop equipment required

Dial Gauge Set: VAS6341
Dial Gauge Adapter: T10170A

-- Remove timing chain upper cover. Refer to UPPER TIMING CHAIN COVER, REMOVING AND INSTALLING .

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

-- Turn the crankshaft with the socket SW 24 on the vibration damper in the direction of the engine rotation until the markings -arrows- are almost on top.

Fig 1: Identifying Mark Points On Intake And Exhaust Camshafts

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-- Remove the spark plug from cylinder 1.

-- Install the : T10170/A all the way into the spark plug thread.

Fig 2: Identifying Adapter For Dial Gauge

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-- Insert the : VAS6341 using the : T10170A/1 until stop and secure with the locking nut -arrow-.

-- Turn the crankshaft slowly to maximum dial reading in the direction of the engine rotation. When the maximum dial reading is reached (Bottom Dead Center (BDC) of the meter) position the piston at >>Top Dead Center (TDC)<<.

NOTE:

Use a ratchet with a 24 mm socket to turn the vibration damper.

If the crankshaft was turned past "TDC", turn the crankshaft two more turns in the direction of the engine rotation. Do not turn the engine in the opposite direction of the engine rotation.

The notch on the vibration damper must line up with the arrow marking on the timing chain lower cover -arrow-.

Fig 3: Identifying Vibration Damper With Counterhold - Vibration Damper T10355
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The markings -1- on the camshaft chain sprockets must be opposite the markings -2 and 3- on the cylinder head.