CABLE AS 4V4835 - Caterpillar

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 Actions
Faulty Oil Temperature Sensor and/or the Circuit
Check the status of the oil temperature onCaterpillar 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, "Analog Sensor Signal".Insufficient Flow of Coolant Through the Oil Cooler
Oil Coolers that are Cooled with Jacket Water
Check for events that are related to the engine cooling system. Refer to Troubleshooting, "Engine Coolant Temperature (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. Perform the necessary repairs.Insufficient 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 (TMI) 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.