Timing Components: Service and Repair

Setting Engine to TDC using Dial Gauge 0-10 mm (VAS 6079)

Special tools, testers and auxiliary items required

• Dial Gauge 0-10 mm (VAS 6079)

• Dial Gauge Adapter (T10170) or (T10170 A)

- Remove the upper timing chain cover. Refer to => [ Upper Timing Chain Cover ] Upper Timing Chain Cover.

- Rotate the crankshaft from above, using with the socket SW 24 on the vibration damper bolt, in the engine rotation direction until the marks - arrows - are on top.






- Remove the spark plug from cylinder 1.

- Install the dial gauge adapter (T10170/A) all the way into the spark plug threads.






- Insert the dial gauge 0-10 mm (VAS 6079) with the extending piece (T10170A/1) all the way and secure it with the locking nut - arrow -.

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

• Rotate the crankshaft first to TDC and then again approximately 45° opposite the engine rotation direction. Next set the crankshaft in the engine rotation direction to TDC.