Fuel Filter Differential Pressure - Check
Observe the fuel filter differential pressure frequently during engine operation.
Fuel Filter Differential Pressure (Restriction) - The fuel filter differential pressure is the difference in fuel pressure between the inlet side and the outlet side of the fuel filter. As the fuel filter element becomes plugged, the difference in pressure between the two sides of the fuel filter increases.
The nominal fuel filter differential pressure during normal engine operation is approximately
Replace the secondary fuel filter elements when the fuel filter differential pressure reaches
For instructions on replacement of the secondary fuel filter elements, see this Operation and Maintenance Manual, "Fuel System Secondary Filter - Replace" topic.
Caterpillar Information System:
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