Start-up Procedure after a System Generated Shutdown{1000} Caterpillar

Engine: 3600 Diesel

Introduction

Do not perform any procedure in this Special Instruction until you read this information and you understand this information.

This Special Instruction provides a procedure for inspecting the engine after a system generated shutdown.

The cause of a system generated shutdown must be corrected prior to an engine restart. Severe engine damage may occur if the problem is not corrected. In some cases, the cause of the shutdown may be obvious and easily corrected. Other times, a visual inspection may not reveal the root cause of the shutdown. The engine must be started in order to determine the root cause.

The time that is required for the start-up procedure is approximately 1 hour and 45 minutes. It is important to determine the root cause of a system generated shutdown in order to avoid engine damage. This procedure is a method for an engine restart when the root cause of the system generated shutdown cannot be determined by visual inspection alone.

Note: If the engine is shutdown by the oil mist detector, refer to the engine's Operation and Maintenance Manual.

The following conditions can cause a system generated shutdown.

• High aftercooler and oil cooler water temperature (inlet)

• High jacket water coolant temperature (outlet)

• High fuel temperature (inlet)

• High inlet manifold air temperature

• High crankcase pressure

• High engine oil temperature

• Low engine oil pressure

• High engine oil filter differential pressure

• Presence of metal particles in the oil lines

• Overspeed

If the engine must be restarted, perform the following start-up procedure.

Start-up Procedure

1. Inspect the condition and the level of all fluids. Correct any problem with the fluids.

2. Ensure that the engine is off-line or that the gearbox is in neutral.

3. Open all manual valves (kiene valves). Use the barring device in order to turn the engine. The open valves will indicate if there is any fluid buildup in the combustion chambers.

4. Start the prelube system and put the fuel switch in the OFF position. Rotate the crankshaft with the barring device for a minimum of four revolutions.

5. Disengage the barring device.

6. Close all manual valves (kiene valves).

7. Start the engine and allow the engine to idle at approximately 350 RPM. Do not take the engine to high idle at this time. Monitor the temperatures and pressures. Prepare to perform a manual engine shutdown if abnormal conditions exist.

8. Allow the engine to idle for ten minutes. While the engine is at idle, walk around the engine and visually inspect the engine. Check for leaks and listen for any abnormal sounds. If any abnormal conditions exist, immediately perform an engine shutdown and correct the problem. If no problems are found go to the next step.

9. Increase the engine to 500 rpm for ten minutes. Monitor the temperatures and pressures. Prepare to perform a manual engine shutdown if abnormal conditions exist. Walk around the engine and visually inspect the engine. Check for leaks and listen for any abnormal sounds. If any abnormal conditions exist, immediately perform an engine shutdown and correct the problem. If no problems are found go to the next step.

10. Increase the engine to high idle for ten minutes. Monitor the temperatures and pressures. Prepare to perform a manual engine shutdown if abnormal conditions exist. Walk around the engine and visually inspect the engine. Check for leaks and listen for any abnormal sounds. If any abnormal conditions exist, immediately perform an engine shutdown and correct the problem. If no problems are found go to the next step.

Note: Due to the small amount of load on the engine, the temperatures will not stabilize for some time. Apply an engine load in order to warm up the engine to normal temperatures. Use the following procedure:

11. Apply 25 percent load to the engine and operate in this condition for ten minutes. Monitor the temperatures and pressures. Prepare to perform a manual engine shutdown if abnormal conditions exist. Walk around the engine and visually inspect the engine. Check for leaks and listen for any abnormal sounds. If any abnormal conditions exist, immediately perform an engine shutdown and correct the problem. If no problems are found go to the next step.

12. Apply 50 percent load to the engine and operate in this condition for ten minutes. Monitor the temperatures and pressures. Prepare to perform a manual engine shutdown if abnormal conditions exist. Walk around the engine and visually inspect the engine. Check for leaks and listen for any abnormal sounds. If any abnormal conditions exist, immediately perform an engine shutdown and correct the problem. If no problems are found go to the next step.

13. Apply rated load to the engine and operate in this condition for ten minutes. Monitor the temperatures and pressures. Prepare to perform a manual engine shutdown if abnormal conditions exist. Walk around the engine and visually inspect the engine. Check for leaks and listen for any abnormal sounds. If any abnormal conditions exist, immediately perform an engine shutdown and correct the problem. If no problems are found go to the next step.

14. Remove the load and allow the engine to run at high idle for five minutes as a cool down period.

15. Return the engine to low idle for five minutes. If all temperatures and pressures are acceptable, return the engine to service.