Tighten timing belt

Fig 1: Identifying Needle Position At Varying Temperatures

Courtesy of VOLVO CARS OF NORTH AMERICA.

This adjustment is to be made with a cold engine. 

A suitable temperature is approximately 20°C/68°F. 

At a higher temperature, for example with a warm engine or a higher ambient temperature, the needle is further to the right.

The illustration shows the indicator position when adjusting the belt tensioner at different engine temperatures.

Fig 2: Identifying Belt Between Intake Camshaft Pulley, Idler Pulley And Crankshaft

Courtesy of VOLVO CARS OF NORTH AMERICA.

Tighten the timing belt as follows: 

• Carefully turn the crankshaft clockwise until the camshaft belt is tensioned.

  The belt must be tensioned between the intake camshaft pulley, the idler pulley and the crankshaft.

• Hold the belt tensioner center screw secure and turn the belt tensioner eccentric counter-clockwise until the tensioner indicator passes the marked position.
• Then turn the eccentric back so that the needle reaches the marked position corresponding to the relevant temperature.

  At 20°C (68°F) the needle must be centered in the window.

  See Fig 2.

• Hold the eccentric secure and tighten the center screw to 20 Nm (15 lb.ft)  .

Check that the indicator is in the correct position. 

A new alignment must be carried out if the indicator is not in the correct position.