New Holland SmartTrax T8.320 Service Manual page 67

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.
(1) Pumping element inlet pressure
(2) Pump lubrication passage
(3) Pumping element inlet pressure
(4) Main supply passage
Engine - Engine and crankcase
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NHIL13ENG1039GA
(5) Pressure regulator
(6) Pumping element inlet pressure
(7) Relief valve outlet passage
(8) Fuel supply inlet from final filter passage to relief
valve and regulator
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