PULLEY 3812895 - Caterpillar

Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire. To help prevent possible injury, turn the start switch off when changing fuel filters or water separator elements. Clean up fuel spills immediately.
Use a suitable container to catch any fuel that might spill. Clean up any spilled fuel immediately.
Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over disconnected fuel system component.
The fuel transfer pump is located on the right side of the engine.The pressure test measures the output pressure of the fuel transfer pump.
Illustration 1 g00730216
Fuel transfer pump
(A) Fuel inlet
(B) Fuel outlet
(1) Fuel transfer pump
(2) O-ring seal
Illustration 2 g00293196
1U-5470 Engine Pressure Group
Refer to Special Instruction, SEHS8907, "Using The 1U-5470 Engine Pressure Group".
Disconnect outlet line (B) of the fuel transfer pump. Prime the fuel system in order to eliminate air from the fuel transfer pump. Refer to the Systems Operation, Testing and Adjusting Module, "Fuel System - Prime" topic for the proper procedure. Connect 1U-5470 Engine Pressure Group to the outlet of the fuel transfer pump.
Disconnect the electrical wire to the fuel shutoff solenoid. Put the lever of the fuel shutoff valve in the closed position.
Crank the engine for ten seconds. Record the maximum pressure. The pressure indication on the gauge should be in the following ranges: Maximum pressure ... 42 to 70 kPa (6 to 10 psi)Minimum pressure ... 31 kPa (4.5 psi)
If the pressure is less than the minimum pressure or more than the maximum pressure, the fuel transfer pump must be repaired or replaced.
Observe the amount of time for the maximum pressure that was recorded during cranking to decrease by one-half. If the time is less than thirty seconds, the fuel transfer pump must be replaced or repaired.
Remove the pressure gauge from the fuel transfer pump. Connect the outlet line to the fuel transfer pump. Loosen the nuts for the fuel supply lines on the fuel injection nozzles. Operate the priming button (3) of the fuel filter base until fuel, which is free from air, flows from the connection. Tighten the nuts on the fuel injection nozzles. Refer to Specifications, "Fuel Injection Lines" for the proper torque.
Connect the wire of the fuel shutoff solenoid.