Tension timing belt

Fig 1: Identifying Needle Position At Varying Temperatures

Courtesy of VOLVO CARS OF NORTH AMERICA.

This adjustment is done with a cold engine. 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 farther to the right.

The illustration shows the position of the indicator when aligning the timing belt tensioner at different temperatures.

Carefully turn the crankshaft clockwise until the timing belt is tensioned. The belt must be in tension between the intake camshaft pulley, the idler pulley and the crankshaft.

Hold the belt tensioner center screw secure. Turn the belt tensioner eccentric clockwise  until the tensioner indicator passes the marked position.

Then turn the eccentric back so that the indicator reaches the marked position in the center of the window.

Hold the eccentric secure. Tighten the center screw to 25 Nm. 

Check that the indicator is in the correct position.