Variable Valve Timing Unit, Checking And Adjusting: Tightening

Fig 1: Identifying Center Plug In Variable Valve Timing Unit

Courtesy of VOLVO CARS OF NORTH AMERICA.

Undo the 3 timing gear pulley screws slightly. Install the center plug in the variable valve timing unit. Tighten following Summary of tightening torques for specific components .

Hold the center plug in place with 25 Nm  while the 3 screws on the camshaft timing gear pulley are tightened. See Summary of tightening torques for specific components . This is to ensure that the variable valve timing unit is in its end position when the timing gear pulley is fastened.