Check the wastegate with applied pressure

Fig 1: Identifying Pressure Adjusted Upwards

Courtesy of VOLVO CARS OF NORTH AMERICA.

During this procedure it is important that the pressure is only adjusted upwards before reading off. 

If you have accidentally set too high a pressure, do not  fine adjust down. The reading will be incorrect.

If too high a pressure is reached, the pressure must be released completely and the adjustment must be restarted.

1. Connect the compressed air.
2. Ensure that the tap is fully open.
3. Set the control pressure for the actual engine version according to the table.
4. Read off the stroke and note check value 1.