Valve Timing, Checking

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Special tools and workshop equipment required

Dial Gauge - 0-10mm VAS6079
Dial Gauge Adapter T10170A

Procedure

-- Remove the upper timing chain 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

Courtesy of AUDI OF AMERICA, LLC

-- Remove the spark plug from cylinder 1.

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

Fig 2: Identifying Dial Gauge - VAS 6079 - With Extending Piece - T10170A/1-

Courtesy of AUDI OF AMERICA, LLC

-- Insert the Dial Gauge - 0-10mm VAS6079 using the Extension T10170A/1 until stop 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 (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.

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

Fig 3: Measure Distance From Outer Edge To Marking On Intake Camshaft

Courtesy of AUDI OF AMERICA, LLC

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-.

Fig 4: Measure Distance Between Marking On Exhaust Camshaft And Marking On Intake Camshaft

Courtesy of AUDI OF AMERICA, LLC

Specified value: 124 to 126 mm.

NOTE:

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

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

Fig 5: Identifying Vibration Damper "TDC" Position With Special Tool T10355
Courtesy of AUDI OF AMERICA, LLC