Ford FCSD TECHNICAL TRAINING FCS-14000-DL Manual de usuario Pagina 49

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LESSON 3: POWERTRAIN
The basics of VCT operation are:
A hydraulic timing mechanism (VCT phaser) rotates the camshafts in relation to their drive sprockets.
Provides performance that is precisely tailored to the engine speed and load.
VCT is electronically controlled (PCM duty cycled) and hydraulically operated.
The VCT solenoid moves a spool valve to control the flow of oil through the VCT system.
Oil flows from the head into the VCT valve body.
Oil flows through the advance or retard passages as directed by the spool valve.
Major sensor inputs:
CMP
Oil temperature sensor
2005 Expedition/Navigator New Model Technician Training 02-SEP-04 3-13
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