Pacifica V6-3.8L VIN L (2005)
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Camshaft: Description and Operation
CAMSHAFT & BEARINGS (IN BLOCK)
DESCRIPTION
The nodular iron camshaft is mounted in the engine block and supported with four steel backed aluminum bearings (Fig. 68). A thrust plate, located in
front of the first bearing, is bolted to the block and controls the camshaft end play.
OPERATION
The camshaft is driven by the crankshaft through a timing chain and sprockets. The camshaft has precisely machined (egg-shaped) lobes to provide
accurate valve timing and duration.