High Pressure Oil System Schematic - Ford 6.0L POWER STROKE Service Procedures And General Diagnostics

Oil Filter
Filter
Bypass
20 PSI
Cooler
Bypass
25 PSI
Oil Pump
Pump
Bypass
70 PSI
High Pressure Oil System
Schematic
• After lube oil is cooled and filtered,
some is directed to the reservoir.
• The reservoir provides oil to the
high pressure pump.
• The IPR (Injection Pressure
Regulator) is PCM controlled and
contains the system's pressure
relief valve which opens at 4000
psi.
• The plumbing from the pump to the
high pressure oil rails for each head
contains a check valve and orifice.
• The oil rails are not cast into the
head but are removable and
F U E L M A N A G E M E N T S Y S T E M

High Pressure Oil System Schematic

Oil Reservoir for
High Pressure
Pump 0.95 Qt.
High
Pressure
Pump
ICP
Sensor
IPR Valve
Contains
4000 PSI
Relief Valve
fastened to the cylinder head and
connected to the top of the
injectors.
Check Valve with Orifice
Drain to Crankcase
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