Removing the timing belt

Fig 1: Identifying Belt Tensioner

Courtesy of VOLVO CARS OF NORTH AMERICA.

Slacken off the belt tensioner 

Slacken off the center screw for the belt tensioner slightly.

Hold the center screw still. Turn the tensioner eccentric counter-clockwise  using a 6 mm Allen key. Turn to 10 o'clock.

Unhook and remove the timing belt.