PIPE 5244046 - Caterpillar

Prestart System Verification
Through independent means assure that gas is not supplied to engine.1. Turn Engine Control switch to STOP and* Program or verify programming of SCM setpoints. Refer to the "Programming Procedures" in Service Manual (Modules) SENR4258, "G3606 And G3608 Engine System Operation, Testing and Adjusting" and SENR5528, "G3612 And G3616 Engine System Operation, Testing and Adjusting"2. Turn Mode Control switch to OFF/RESET in order to reset the diagnostics.3. Turn Mode Control switch to STOP and* Correct any diagnostics indicated by the Gas Engine SCM.* Correct any diagnostics indicated by the ECM.* Correct any diagnostics indicated by the ETC.4. With gas turned OFF, push the Prelube button, verify that prelube pump turns ON and SR2 energizes.* Hold button ON until the Prelube indicator on CMS display comes ON.* Release button and allow pressure to drop until Prelube light extinguishes. The next step causes engine cranking, ensure that personnel and material are clear of engine and driven equipment.5. With gas turned OFF, turn the Engine Control switch to START, and verify that the Prelube pump comes ON followed by starter engagement after the Prelube light comes ON.6. Allow the engine to crank and verify that the Engine Speed display on the CMS display indicates cranking speed.Initial Engine Start
The following steps result in engine START. It is recommended that someone manually control an upstream fuel valve until system CHECK-OUT is complete.1. Place Engine Control switch in the STOP position. Open the upstream gas valve.* Verify that there are no gas leaks and that no fuel flows past the gas control valves.* Verify that IDLE/RATED display on the ECM indicates IDLE.* Verify that the Fuel Energy Content (Btu) setting is correct for the available gas.* Verify that the desired speed input is set to an appropriate speed.2. Using the DDT, set the system to Magneto Calibration Mode.3. Calibrate the Manifold Air Pressure (MAP) sensor. See the Systems Operation Testing And Adjusting Manual. The following steps result in engine cranking and/or START. Ensure that personnel and material are clear of engine and driven equipment.4. Turn Engine Control switch to MANUAL, and* Verify that the engine prelubes and then begins cranking.* Engine should START and accelerate to low idle. It may require several tries to start the engine the first time in order to clear the fuel lines of air. If the engine repeatedly fails to START, refer to Service Manual (Module) SENR6510 "Electronic Troubleshooting, Engine Supervisory System (ESS)".If the IDLE/RATED terminal is jumped to Battery NEG (-), the engine will stay at low idle for only a brief time before accelerating to the desired engine speed input selected.Otherwise, the engine will remain at low idle until Rated is selected.* Verify that the engine is running at the selected speed.5. Verify that the Emergency Stop pushbutton will shutdown the engine by pressing the Emergency Stop pushbutton.6. RESTART the engine.* Verify that all displays on all modules function properly.* Verify that the CMS display and SCM properly indicates engine speed.* Verify that ignition timing