SEAL-O-RING 6F6672 - Caterpillar

Use this procedure in order to troubleshoot high engine oil temperature or use this procedure if any of the following event codes are active or logged.
Table 1
Event Code    
Description    Conditions which Activate The Code    System Response    
E018(2) High Engine Oil Temperature Derate     The engine oil temperature has exceeded the trip point and the delay time has expired.     Engine power is derated. The code is logged.    
E020 (1) High Engine Oil Temperature Warning     The alarm output is activated. The code is logged. Note: Refer to Troubleshooting, "Engine Monitoring System" for information on trip points and delay times.Probable Causes
Faulty oil temperature sensor and/or circuit
Insufficient flow of coolant through the oil cooler
Insufficient flow of oil through the oil coolerRecommended Repairs
Check the Oil Temperature Sensor and/or the Circuit
Check the reading of the oil temperature on the Caterpillar Electronic Technician (ET). The temperature should rise steadily as the engine is warmed. Ensure that the temperature is reasonable.If the reading on Cat ET for the oil temperature is not reasonable, troubleshoot the circuit for the oil temperature sensor. Refer to Troubleshooting, "Sensor Signal (Analog, Active) - Test".Check the Flow of Coolant Through the Oil Cooler
Oil Coolers that are Cooled with Jacket Water
Check for "High Engine Coolant Temperature" events. Refer to Troubleshooting, "Coolant Temperature Is High".Oil Coolers that are Cooled by the Separate Circuit
Compare the temperature of the coolant at the inlet of the oil cooler to the regulated temperature. If the inlet temperature is OK, check the temperature of the coolant at the outlet of the oil cooler.A high temperature difference indicates an insufficient flow rate. Investigate the cause of the obstruction. Make the necessary repairs.Check the Flow of Oil Through the Oil Cooler
Run the engine at normal operating temperature. Determine the pressure differential between the inlet and the outlet of the oil cooler. For comparative data, refer to the Technical Marketing Information for the engine.If the pressure differential between the inlet and the outlet of the oil cooler exceeds the data that is published for the engine, there is an insufficient flow of oil through the oil cooler. Determine the cause of the obstruction. Make the necessary repairs.