PLATE 3263988 - Caterpillar

the engine is operating at full load speed, the fuel transfer pump moves the fuel through the following components at 76 to 245 kPa (11.0 to 35.5 psi):
Fuel filter
Fuel injection pump housingUse the following steps to check the fuel pressure of the fuel transfer pump.
Disconnect the fuel line from the filter at the inlet of the fuel injection pump housing.
Install a tee at the inlet and connect the fuel line to the tee.
Connect a pressure gauge to the tee and start the engine.If the fuel pressure is not above 76 kPa (11.0 psi) perform the following steps.
Stop the engine.
Replace the fuel filter.
Ensure that the inlet screen on the fuel transfer pump is not plugged or damaged.
Ensure that the fuel lines are not plugged or damaged.
Ensure that the fuel hoses are not plugged or damaged.
Start the engine and again check the fuel pressure.If the fuel pressure is below 76 kPa (11.0 psi) the fuel transfer pump is faulty.Perform one of the following items if the fuel transfer pump is faulty:
Repair the fuel transfer pump.
Replace the fuel transfer pump.