Valve Timing, Checking
Special tools and workshop equipment required
- Dial Gauge Adapter T10170A
- Dial Gauge Set VAS6341
-- Remove the upper timing chain cover, refer to UPPER TIMING CHAIN COVER .
-- Remove the noise insulation -1-, refer to Overview - Herbie Beetle Decorative Film .
-- 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.
-- Remove the spark plug from cylinder 1.
-- Install the Dial Gauge Adapter T10170/A all the way into the spark plug thread.
-- Insert the Dial Gauge Set VAS6341 using the Dial Gauge Adapter - ExtensionT10170A/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 (BDC of the meter) position the piston at "TCD".
Use a ratchet with a 24 mm socket to turn the vibration damper.
If the crankshaft was turned past "TCD", 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-.
- The markings -1- on the camshaft chain sprockets must be opposite the markings -2- and -3- on the cylinder head.