3516B Generator Set Engines with Dynamic Gas Blending Caterpillar

Engine Shutdown Occurrence

Usage:

Use this procedure to troubleshoot an unexpected engine shutdown. Also, use this procedure if the following event code is active or logged.

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Table 1
J1939 Code and Description	CDL Code and Description	Comments
190-1 Engine Speed : Low - most severe (3)	E358 (3) Engine Underspeed	The engine is shutdown.The code is logged.

This engine event is latched, the power to the ECM must be cycled before the engine is restarted.

Probable Causes

Codes
Fuel system
Fuel injectors
Engine overload
Worn engine components

Recommended Actions

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Table 2
Troubleshooting Test Steps	Values	Results
1. Check for Codes A. Connect Cat^® Electronic Technician (ET) to the service tool connector. B. Look for active codes that are associated with the system for the event code.	Codes	Result: An associated code is active. Repair: Troubleshoot any associated codes before continuing with this test. Result: A code is active or logged. Proceed to Test Step 2.
2. Inspect the Fuel System Refer to Testing and Adjusting, "Fuel System Inspection" for additional information. A. Visually check the fuel level in the fuel tank. Do not rely on the fuel gauge only. B. Ensure that the vent in the fuel cap is not filled with debris. C. Ensure that the fuel supply valve (if equipped) is in the full OPEN position. Note: Cold weather adversely affects the characteristics of the fuel. Refer to the engines Operation and Maintenance Manual for information on improving the characteristics of the fuel during cold-weather operation. D. Check fuel quality. Refer to Testing and Adjusting, "Fuel Quality - Test" for additional information. Check the fuel tank for debris or foreign objects which may block the fuel supply. E. Check for fuel leaks.	Fuel System	Result: The fuel system is OK. Proceed to Test Step 3. Result: The fuel system is NOT OK. Repair: Repair or replace damaged fuel system components. If the problem is not resolved, proceed to Test Step 3.
3. Test the Fuel Injectors A. Connect Cat ET. B. Use Cat ET to perform the following fuel injector tests: - "Injector Solenoid Test" - "Cylinder Cutout Test" Refer to Troubleshooting, "Cat ET Service Features" for additional information.	Fuel Injectors	Result: The tests were successful. Proceed to Test Step 4. Result: The tests were not successful. Repair: Diagnose the problem. Repair or replace damaged components. If the problem is not resolved, proceed to Test Step 4.
4. Check for Engine Overload Note: When the load that is applied to the engine is too large, the engine will run in the lug condition. When the engine is running in the lug condition, engine rpm does not increase with an increase of fuel.	Load	Result: The engine is not being overloaded. Proceed to Test Step 5. Result: The engine is being overloaded. Repair: Reduce engine load to an acceptable limit. If the problem is not resolved, proceed to Test Step 5.
5. Inspect the Engine for Internal Problems A. If a mechanical problem is suspected, disassemble the engine. Refer to the Disassembly and Assembly manual for additional information. B. Inspect the internal components for the following conditions: - Seizure - Broken components - Bent components	Damaged or Worn Engine Components	Result: There are worn or damaged engine components. Repair: Repair or replace the worn or damaged engine components. Verify that the repair eliminated the problem.

If the procedure did not correct the issue, contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).