Tensioning The Timing Belt

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Fig 1: Identifying Needle Position At Varying Temperatures

Courtesy of VOLVO CARS OF NORTH AMERICA.

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

At higher temperatures (with the engine at operating temperature or a high outside temperature 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 temperatures.

Hold the center screw secure and turn the belt tensioner eccentric counter-clockwise until the tensioner indicator passes the marked position.

NOTE:

Check that the variable valve timing unit is in its limit position.

Tighten the three screws at the timing gear pulley for the intake camshaft. Tighten to 10 Nm .

Tighten the three screws at the timing gear pulley for the exhaust camshaft. Tighten to 20 Nm .

Turn the eccentric on the belt tensioner back so that the indicator reaches the marked position in the center of the window. Remember to hold the center screw secure at the same time.

Hold the eccentric secure and tighten the center screw to 20 Nm .

Check that the indicator is in the correct position.

Remove camshaft adjustment tool 999 5451 and crankshaft stop 999 5452.

Install the plug with a new blind cover plug. Tighten to 40 Nm .