Installing And Adjusting The Variable Valve Timing Unit/Timing Gear Pulley On The Camshaft: Tightening

Fig 1: Holding Center Plug At While Tightening The Camshaft Timing Gear Pulley Screws

Courtesy of VOLVO CARS OF NORTH AMERICA.

Slacken off the 3 x 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 3 x screws on the timing gear pulley for the exhaust camshaft. See: Summary of specific components and tightening torques .

This is to ensure that the variable valve timing unit is in its end position when the timing gear pulley is tightened.