Camshaft Drive System
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The crankshaft drive sprocket rotates the timing belt and in-turn rotates the camshaft sprockets. Belt tension is provided by the hydraulic auto-tensioner assembly. The hydraulic auto-tensioner automatically compensates for tension variations caused by changes in belt temperature. A timing belt idler pulley and a timing belt tensioner pulley are also incorporated into the design. 2 steel camshafts, 1 per bank, are used to operate both intake and exhaust rocker arms. The timing belt also drives the water pump assembly.