40 RENR5042-02 Troubleshooting Section Recommended Actions Note: A problem with the FRC will only cause black smoke during acceleration. A problem with the FRC will not cause black smoke during steady state operation. Air Inlet and Exhaust System 1. Check the air inlet system for restrictions and/or for leaks. Flash File a. Check for an air filter restriction. Verify that the correct flash file is installed. Refer to Troubleshooting, “Flash Programming” for more information. b. Check for derates and for alarms. c. Perform a visual inspection of the system for restrictions and/or for leaks. Fuel Quality Cold weather adversely affects the characteristics of the fuel.
Refer to Operation and Maintenance Manual for information on improving the characteristics of the fuel during cold weather operation. 2. Ensure that the turbocharger has not failed. 3. Check the exhaust system for restrictions. 4. Repair any leaks that were found. Remove any restrictions that were found. Replace any damaged components that were found. Valve Adjustment Check the valve adjustment. Refer to Systems Operation/Testing and Adjusting, “Air Inlet and Exhaust System”. Engine Speed/Timing 1. Check the calibration of the engine speed/timing sensor. Refer to Troubleshooting, “Engine Speed/Timing Sensor - Calibrate”. i01405645 Excessive Engine Oil Consumption 2.
Verify that the crankshaft and the camshaft drive gears are set with the proper orientation. Refer to the Disassembly and Assembly manual. SMCS Code: 1348-035 Atmospheric Pressure Sensor Probable Causes Check the atmospheric pressure sensor for dirt and/or for debris. Remove any dirt and/or debris that is present. The correct reading for the atmospheric pressure is between 50 kPa (7.25 psi) and 100 kPa (14.5 psi). Oil leaks Oil level Engine oil temperature Boost Pressure Sensor, “Fuel Position”, and/or “FRC Fuel Limit” Turbocharger 1. Monitor the status of “Fuel Position” and “Rated Fuel Limit” while the engine is operating under full load.
If “Fuel Position” equals “Rated Fuel Limit” and “Fuel Position” is less than “FRC Fuel Limit”, the electronics are operating correctly. Otherwise, proceed to the next Step. Valve guides Piston rings Recommended Actions Oil Leaks 2. Verify that there are no active diagnostic codes for the boost pressure sensor. Locate all oil leaks. Repair the oil leaks. Check for dirty crankcase breathers. 3. Monitor the status of “Boost Pressure” and “Atmospheric Pressure” for normal operation on the Caterpillar Electronic Technician (ET). When the engine is not running, “Boost Pressure” should be 0 kPa (0 psi). Oil Level Remove excess oil. Locate the source of the excess fluid.
Repair the leaks that are causing the problems. Recheck all fluid levels.