Tighten The Timing Belt

Adjust the belt tensioner

NOTE:

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

At higher temperatures (with the engine at operating temperature or a high outside temperatures for example) the indicator is further to the right. The illustration shows the position of the indicator when aligning the timing belt tensioner at different engine temperatures.

Tension the timing belt as follows:

Fig 1: Identifying Needle Position At Varying Temperatures

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fix the belt tensioner center screw in position and turn the belt tensioner eccentric counterclockwise until the tensioner indicator passes the marked position.

Then turn the eccentric back so that the indicator reaches the marked position in relation to actual temperature.

At the same time, ensure that the center screw remains fixed. At 20° C/68° F, the indicator should be centered in the window.

If the indicator is not in the right position, the adjustment must be repeated.

NOTE:

The variable valve timing unit must not be released from the limit position until after the timing gear pulleys have been tightened.

tighten the screws (2) on the timing gear pulley for the intake camshaft to 10 Nm
install the screw missing on the exhaust timing belt pulley
tighten the screws on the timing gear pulley for the exhaust camshaft to 20 Nm .

the camshaft adjustment tools 9995452
the crankshaft stop 9995451 .

Install the plug with a new sealing washer. Tighten to 40 Nm .

Checking the markings and belt tension

Fig 2: Checking Belt Tension

Courtesy of VOLVO CARS OF NORTH AMERICA.

press the belt to check that the indicator on the tensioner moves easily
install the upper timing belt cover
turn the crankshaft 2 rotations; check that the markings on the crankshaft and timing gear pulleys align
check that the indicator on the belt tensioner is within the marked area.