Valve Timing, Checking: Notes

Special tools and workshop equipment required 

• Spark Plug Removal Tool :3122B 
• Dial Gauge Set :VAS6341 
• Dial Gauge Adapter :T10170A 
• Wrench - 21mm :T40263 
• Adapter :T40314 
• 24 mm Socket

Procedure 

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

-- Remove the noise insulation. Refer to Noise Insulation, Removing And Installing .

-- Turn the crankshaft with the :T40263  , :T40314  and 24 mm socket on the vibration damper in the direction of engine rotation until the marks -arrows- are almost on top.

-- Removing the spark plug from cylinder 1 with the :3122B  .

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

-- Insert the :VAS6341  with the :T10170A/1  all the way and secure it 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<<.

TIP: 

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

-- Measure the distance from the left outer edge ridge -1- to the marking -2- on the intake camshaft.

• Specified value: 61 to 64 mm.

-- Once the specified value is reached, measure the distance between the marking on the exhaust camshaft -3- and the marking on the intake camshaft -4-.

• Specified value: 124 to 126 mm.

TIP: 

If one tooth has an offset, there will be a deviation of approximately 6 mm from the specified value. The timing chain must be installed again if an offset is determined.

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

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