SHOE AS-CUTOFF 4902562 - Caterpillar

Probable Causes
Air inlet and exhaust system
Fuel injectors
Aftercooler (if applicable)
Accessory equipmentRecommended Actions
Air Inlet and Exhaust System
Check for air inlet restrictions and/or leaks. A one degree increase in the inlet manifold temperature will increase the exhaust temperature by approximately three degrees. Check for leaks between the exhaust manifold and the turbocharger. Check for exhaust restrictions. Refer to the Systems Operation/Testing and Adjusting manual for more information on inspecting the air inlet and exhaust system.Fuel Injectors
Faulty injectors that deliver too much fuel will increase exhaust temperatures. Connect Caterpillar Electronic Technician (ET) in order to determine if any diagnostic codes for the injector solenoids are present. Perform the "Injector Solenoid Test". Observe that the injector solenoids are being energized on Cat ET. Perform the "Cylinder Cutout Test". Locate the misfiring cylinder. Refer to Troubleshooting, "Injector Solenoids".Aftercooler (if applicable)
Normal intake manifold pressure with high exhaust temperature can be caused by blockage of the fins of the aftercooler core.If the application has an aftercooler, check the aftercooler for correct operation. Check for blockage in the cores of the aftercooler.Accessory Equipment
Check all flywheel and damper driven equipment for proper operation. Ensure that the accessory equipment is not lugging down the engine.