Engine - Engine and crankcase
This figure shows the low pressure supply passages in the CP3 pump. The pump shaft and pumping elements are
lubricated with diesel fuel. The relief valve maintains a
5.0 bar
(
72.5 psi
) supply pressure to charge the pumping
elements.
NHIL13ENG1039GA
39
(1) Pumping element inlet pressure
(5) Pressure regulator
(2) Pump lubrication passage
(6) Pumping element inlet pressure
(3) Pumping element inlet pressure
(7) Relief valve outlet passage
(4) Main supply passage
(8) Fuel supply inlet from final filter passage to relief
valve and regulator
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