W204 w205 OM651.How to register the turbo pneumatic actuator 

This is how to register the turbocharger pneumatic actuator.
1 . Apply e negative pressure up to 700 mmbar.
2 . Close by hand the wastegate.
3 . Screw the nut until touching the wastegate lever .
4 . Release the negative pressure
5 . Screw 3.5 turns the nut with the white stripe to create preload.
6 . Tight the other nut.
7 . Verify if the wastegate is totally closed at 160/170 mmbar.
Done.