HANDHOLD GP 4359035 - Caterpillar

Check the operation of the prelube pump.Note: You can use Cat ET or the display on the optional control panel to monitor the status of the prelube pump solenoid.
If the optional control panel is used, make sure that the engine control switch is in the "STOP" position. Press the "MANUAL PRELUBE" switch.If the system is operating correctly, the "PRELUBE ACTIVE" indicator will illuminate and the prelube pump will operate.When sufficient engine oil pressure is achieved, the switch for prelube oil pressure will remove power from the prelube pump. The "PRELUBE ACTIVE" indicator will turn off.
After the "PRELUBE ACTIVE" indicator turns off, release the "MANUAL PRELUBE" switch.
Make sure that the fuel supply is OFF. Turn the engine control switch to the "START" position. Verify that the prelube pump and the "PRELUBE ACTIVE" indicator operate prior to activation of the starting motor.
After the "PRELUBE ACTIVE" indicator turns off, verify that the starting motor cranks the engine. Then turn the engine control switch to the "STOP" position.
Verify that the fuel supply is OFF. Make sure that the pressure for the electrohydraulic actuator system is sufficient for start-up.
Illustration 59 g00907346
(1) Sight gauge (2) Plug
Check the oil level in sight gauge (1). Fill the tank to the "FULL" mark on the sight gauge.
Remove plug (2) and install a pressure gauge in the fitting after the oil filter.Note: You can use Cat ET or the display on the optional control panel to monitor the status of the switch for prelube oil pressure.
To fill the hydraulic hoses and lines, crank the engine and observe the pressure gauge. Do not crank the engine for more than 30 seconds at a time. If necessary, crank the engine repeatedly in order to achieve a pressure of 1200 175 kPa (174 25 psi).Note: The ECM will generate event codes and diagnostic codes during this procedure. After each crank cycle, reset the engine control switch. Continue to crank the engine until the pressure is achieved. After the electrohydraulic system is filled with oil, use Cat ET to clear the codes.
Stop cranking the engine and check the oil level in sight gauge (1) again. Add oil, if necessary.The correct oil level is between the "ADD" and "FULL" marks on the sight gauge.
After the hydraulic system is primed, crank the engine again and verify that the reading on the pressure gauge is 1200 175 kPa (174 25 psi) during cranking.This pressure is adequate for attempting start-up.Note: Sometimes, the pressure must be increased in order to avoid the generation of diagnostic codes during start-up. Usually, the codes are due to restarting an engine that has a low viscosity of hydraulic oil because the oil is hot. If codes are activated, use an Allen wrench to turn the pressure relief valve adjusting bolt clockwise for approximately 1/4 of a turn (90 degrees). Refer to Illustration 61.
Turn the engine control switch to the "STOP" position. Turn ON the fuel supply to the engine.
Verify that no gas is leaking. Verify that the gas