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LESSON 3: POWERTRAIN
Phaser Oil Vanes
The oil vanes create oil cavities for valve-directed oil to rotate the camshaft in relation to the crankshaft.
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Oil pushes on one side of the vanes to rotate the cam in one direction to advance timing.
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Oil pushes on the other side of the vane to rotate the cam in the other direction to retard timing.
2005 Expedition/Navigator New Model Technician Training 02-SEP-04 3-17