Valve Timing, Checking

Special tools and workshop equipment required 

• Dial Indicator Set:VAS 6341 
  Fig 1: Identifying Dial Gauge Set VAS 6341

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• Dial Gauge Adapter:T10170 A 
  Fig 2: Dial Gauge Adapter T10170A

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

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

-- Remove the right wheel and the right wheel housing liner. Refer to FRONT WHEEL HOUSING LINER, REMOVING AND INSTALLING .

-- Turn the crankshaft with the 24 mm socket on the vibration damper in the direction of the engine rotation until the markings -1- and -2- are almost on top.

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-- Remove the ignition coil with power output stage for cylinder 1. Refer to IGNITION COILS WITH POWER OUTPUT STAGES, REMOVING AND INSTALLING .

-- Remove the spark plug for the cylinder 1 using the Spark Plug Removal Tool:3122B  .

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

Fig 3: Identifying Adapter For Dial Gauge

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-- Insert the Dial Gauge - 0-10mm:VAS 6341  using the Extension:T10170A/1  until it stops and secure with the locking nut -arrow-.

-- Turn the crankshaft slowly in the direction of the engine rotation until the maximum dial reading is reached. When the maximum dial reading is reached (turning point of the meter) position the piston at >>TDC<<.

• The notch on the vibration damper must align with the arrow marking on the lower timing chain cover -arrow-.
  Fig 4: 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.