Tightening
Slacken off the 3x screws for the timing gear pulley slightly (applies to both timing gear pulleys).
Install the center plug in the variable valve timing unit. Tighten. See Summary Of Specific Components And Tightening Torques .
Hold the center plug at 25 Nm at the same time as tightening the 3 x screws on the camshaft timing gear pulley to Summary Of Specific Components And Tightening Torques .
Tighten the 3x screws on the timing gear pulley for the intake camshaft. See Summary Of Specific Components And Tightening Torques . This is to ensure that the variable valve timing (VVT) unit is in its end position when the timing gear pulley is tightened.