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Home >> Chevrolet >> 2001 >> Cavalier LS, 2.2 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 136 (Engine Mechanical - 2.4L (Unit Repair)) >> Description & Operation >> Engine >> Balance Shaft Assembly

Balance Shaft Assembly

WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

There are two shafts supported on bearing insets in a cast split housing. The balance shaft assembly is mounted to the bottom of the engine block. The longer shaft is chain driven by a sprocket on the crankshaft. The shorter shaft is driven by the longer shaft. The shafts rotate at twice the engine speed. The shorter shaft drives the oil pump which is attached to the balance shaft housing. The housing assembly contains the oil pump pick-up and screen on the bottom of the assembly.

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