22
Lubrication SyStem
35
Lubrication System Oil Flow
• Oil is drawn from the oil pan through the pick-up tube. The
oil is then routed through a passage cast into the upper oil
pan before being routed through a passage in the block, a
passage in the front cover, and finally to the oil pump inlet.
• The regulator valve utilizes a force, provided via the regulator
spring, to apply a pressure equal to 65 psi. Whenever oil pressure
exceeds this force, the regulator valve will move downward
and allow the excess pressure to bleed off back through a
passage that routes the oil back to the inlet side of the pump.
• From the oil pump, oil is directed to the oil
cooler and then to the oil filter.
• From the oil filter the oil is supplied to a chamber incorporating
five (5) passages. One (1) is to the turbochargers for
lubrication. Two (2) are to the EOT and EOP sensors.
• The two (2) other passages are to the tappet oil
supply on the right and left banks. The tappet galleries
also provide oil to the piston cooling jets.
• Cross drillings off of the right bank tappet
gallery supply oil to the main bearings.
• Another cross drilling vertically up from each main
bearing supplies oil to the camshaft bearings.
Note: This oil supply routing is different than the 6.0L
and uses different bearings which are also placed
differently with respect to the oil holes.
Summary of Contents for 6.4L Power Stroke
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Page 89: ...88 wiring diagram single alt reference only Refer to Ford Wiring Diagrams for Wiring ...
Page 90: ...89 wiring diagram single alt reference only Refer to Ford Wiring Diagrams for Wiring ...