BOLT-LOCKING 0344160 - Caterpillar

System Operation Description:
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System Schematic For Starting Motor Relay (SMR) On 3306B And 3406C Powered Generators
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System Schematic For Fuel Control Relay On ETR Systems On 3306B And 3406C Powered Generators
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System Schematic For Starting Motor Relay (SMR) On 3500 Engines And 3412C Engines
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System Schematic For Fuel Control Relay On ETR Systems On 3500 Engines And 3412C Engines
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System Schematic For Starting Motor Relay On EUI Engines ( 3500B Series)In order to find the cause of an overcrank shutdown, perform the following procedure.Test Step 1. PERFORM THE INITIAL CHECK.
Check for active diagnostic codes (with the exception of the CID 566 FMI 7 code). Check for other flashing indicators on the GSC. If any codes are present, correct the diagnostic codes first. Go to the appropriate procedure for that fault.Expected Result:No other diagnostic codes or indicators are active.Results:
OK - No other diagnostic codes or indicators are active. Proceed to Test Step 2.
NOT OK - Another diagnostic code is active or an indicator is active.Repair: Exit this procedure. Troubleshoot the active code or indicator. Stop.Test Step 2. INSPECT THE FUEL AND AIR SUPPLY.
Check the fuel level and quality. Refer to the Engine Service Manual.
Check for a plugged fuel filter. Refer to the Engine Service Manual.
Check for a plugged air filter. Refer to the Engine Service Manual.Expected Result:The air and fuel systems are within specifications.Results:
OK - The air and fuel systems are within specifications. Proceed to Test Step 4.
NOT OK - One or more of the items in this Test Step are NOT within specifications.Repair: Correct the problem with the corresponding system. Reset the genset. Operate the genset and verify that the problem has been corrected. Stop.Test Step 3. AIR SHUTOFF SOLENOID INSTALLATION CHECK.
Check the engine for the air shutoff solenoid.Expected Result:The engine has the air shutoff solenoid.Results:
OK - The engine has the air shutoff solenoid. Proceed to Test Step 4.
NOT OK - The engine does NOT have the air shutoff solenoid. Proceed to Test Step A.Test Step 4. AIR SHUTOFF SOLENOID INSTALLATION CHECK.
Check the air shutoff solenoid for activation. The solenoid must be deactivated in order for the engine to start. See Testing And Adjusting, "Air Shutoff Solenoid - Check".Results: Continue to the next test step.Test Step 5. CHECK THE AIR SHUTOFF SOLENOID.
Check the engine starting system. Check the fuel system. In order to check the fuel control solenoid, see Testing And Adjusting, "CID 566 FMI 7 Unexpected Shutdown Improper Mechanical Response - Test". Check for a fault with the engine starting system or the fuel system.Expected Result:The air shutoff solenoid is working properly.Results:
OK - The air shutoff solenoid is working properly. Proceed to Test Step 6.
NOT OK - The air shutoff solenoid is NOT working properly.Repair: Correct the problem with the air shutoff solenoid. Reset the genset. Operate the genset and verify that the problem has been corrected. Stop.Test Step 6. CHECK THE FUSES.
Check the fuses "F2" and "F4" on the relay module.Expected Result:The fuse is NOT blown.Results:
OK - The fuse is NOT blown. Proceed to Test Step