WASHER 4K9943 - Caterpillar

At 3000 hours the exhaust gas recirculation valve, connecting pipe and exhaust cooler will need to be cleaned. The exhaust gas recirculation maintenance timer will need to be reset for the engine to function correctly.At 3000 hours a 5838-31 level 1 diagnostic code will become active and the amber warning lamp will become solid. This information is to inform the operator that cleaning and reset are required. The operator then has 100 hours to complete the cleaning and reset.If at 3100 hours the cleaning and reset has not been performed, a 5838-14 level 2 diagnostic code will become active. The amber warning lamp will start to flash and the engine will be derated.
Illustration 1 g03890559
Typical example
(1) Exhaust gas recirculation valve
(2) Connecting pipe
(3) CoolerRemove the exhaust gas recirculation valve (1), remove the connecting pipe (2) and remove the exhaust cooler (3). For more information, refer to Disassembly and Assembly, Exhaust Gas Recirculation Valve - Remove and Install and Disassembly and Assembly, Exhaust Cooler (NRS) - Remove and Install.The exhaust gas recirculation valve, connecting pipe and the exhaust cooler can be cleaned using a soft lint free cloth and deionized water. All components must be dried before installation.For more information on installation, refer to Disassembly and Assembly, Exhaust Gas Recirculation Valve - Remove and Install. Also, refer to Disassembly and Assembly, Exhaust Cooler (NRS) - Remove and Install.The electronic service tool will need to be connected to reset the maintenance timer after the exhaust gas recirculation valve has been cleaned and installed. This reset will reset the hour counter for exhaust gas recirculation valve maintenance to zero and if necessary, clear the diagnostic codes.