New Holland SmartTrax T8.320 Service Manual page 70

Fuel system testing
Always use the fuel temperature sensor port when check-
ing fuel pressure.
Using the fuel blockage sensor will open the dirty side of
the filter to the clean and contaminate the fuel system.
To test the fuel supply pressure you will to procure a
MC5315 x 4 x 12 fitting locally.
Pressure at filter with lift pump running .
(5.00 psi)
Pressure while cranking 1.0 bar (14.5 psi)
Engine running 5.0 bar (72.5 psi)
Engine - Engine and crankcase
0.34 bar
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