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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Mechanical - 4.6L (1 Of 5)) >> Description and Operation >> Engine Component Description >> Crankshaft

Engine Component Description: Crankshaft

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There is an first and second design crankshaft. The first design is a cast nodular iron design and the second design is a forged crankshaft. All designs use 5 main bearings. Crankshaft thrust is taken by the number three main bearing. The position sensor, also known as the reluctor wheel, is cast integrally with the crankshaft. The crankshaft is internally balanced and incorporates a one piece rear seal. A rolled fillet radius is incorporated on all bearing journals to improve fatigue strength.