GUARD A-BELT 7W1675 - Caterpillar

the engine oil temperature is higher than normal, the engine oil cooler may have a restriction. Look for a restriction in the passages for engine oil in the engine oil cooler. The engine oil pressure will not necessarily decrease due to a restriction in the engine oil cooler.Determine if the engine oil cooler bypass valve is held in the open position. This condition will allow the engine oil to flow through the valve rather than through the engine oil cooler. The engine oil temperature will increase.Make sure that the cooling system is operating properly. A high coolant temperature in the engine oil cooler will cause high engine oil temperature.