Commander 4WD V8-4.7L VIN N (2006)
Crankshaft: Description and Operation
CRANKSHAFT
DESCRIPTION
The 4.7L crankshaft is constructed of nodular cast iron. The crankshaft is a cross shaped four throw design with eight counterweights for balancing
purposes. The crankshaft is supported by five select fit main bearings with the number three serving as the thrust washer location. The main journals of
the crankshaft are cross drilled to improve rod bearing lubrication. The number eight counterweight has provisions for crankshaft position sensor
target wheel mounting. The select fit main bearing markings are located on the rear side of the target wheel. The crankshaft oil seals are one piece
design. The front oil seal is retained in the timing chain cover, and the rear seal is pressed in to a bore formed by the cylinder block and the bedplate
assembly.
