Tighten The Timing Belt

Fig 1: Identifying Needle Position At Varying Temperatures

Courtesy of VOLVO CARS OF NORTH AMERICA.

This adjustment is carried out on a cold engine. A suitable temperature is approximately 20°C/68°F. 

At higher temperatures, for example with the engine at operating temperature or at higher ambient temperature, the needle is further to the right.

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