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L U B R I C AT I O N S Y S T E M
Lubrication System Oil Flow
• Oil is drawn from the oil pan through the
pick-up tube to the gerotor oil pump.
• The oil pressure is regulated to 75 psi via
the oil pressure regulator relieving excessive
oil pressure to the inlet of the oil pump.
• From the oil pump, oil is directed to the oil
cooler and then the to the oil filter.
• From the oil filter the oil is supplied to four
(4) passages. One is to the turbocharger for
lubrication and VGT control via an external
line.
• The oil also is provided to the oil reservoir
that supplies the high pressure oil pump.
• The two (2) other passages are to the tappet
oil feed 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 feed the cam bearings, then the
crankshaft main bearings.
• The crankshaft has cross drillings in it to
direct oil to each of connecting rod bearings.
Oil Pan / Bed Plate
• The 6.0L Power Stroke uses a two piece oil
pan. The lower half is wider than the bottom
of the engine to increase its capacity. Due to
this wider oil pan, an upper oil pan is used to
adapt the lower pan to the bed plate. The
upper pan also acts as an oil baffle.
• The upper pan is bolted to the bed plate.
The bed plate replaces the individual main
bearing caps. This one piece design results
in a more rigid bearing retaining system.
• The pick-up tube is bolted to the upper pan
and oil is routed through the upper pan and
the bed plate to the front cover.
22
Lube Pressure Oil System Schematic
Oil Filter
Filter
Turbo
Bypass
20 PSI
Cooler
Oil Reservoir
Bypass
for High
25 PSI
Pressure
Pump 0.95 Qt.
To High
Pressure Oil
System
Oil Pump
Pump
Bypass
70 PSI
CB
MB
T
T
CB
MB
T
T
CB
MB
T
T
CB
MB
T
T
CB
MB
Right Bank
T= Tappet
CB = Cam Bearing
MB = Main Bearing
CR= Connecting Rod
= Piston Cooling Jet
WIDER OIL PAN
UPPER OIL PAN
CR
T
T
CR
CR
T
CR
T
CR
T
CR
T
CR
T
CR
T
Left Bank
37
BED PLATE
38
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