VALVE-BALL 2416181 - Caterpillar

Illustration 1 g02719947
View of the front of the rear axle housing (1) Pressure sensor
Illustration 2 g02719955
View of one oil filter (1) Filter housing (2) Inlet (3) Outlet (4) Bypass switch (5) Pressure sensor (6) Pressure tap (7) Oil sampling portFinal drive oil filters (1) are mounted to the front of the rear axle housing. Oil from the final drive lubrication pump flows through inlet (2) to the oil filter. Oil then flows through outlet (3) to the final drive.Filter bypass switch (4) and pressure sensor (5) for the final drive send input signal to the Brake ECM.Oil that flows to inlet (2) fills the space that is between the filter element and the inside of the filter housing. During normal operation, the oil flows through the filter element. The oil then flows through outlet (3) . The filter element stops any debris that is in the oil.If the filter element becomes full of debris, the restriction to the flow of oil causes a pressure increase inside the filter. If the pressure of the oil achieves the bypass pressure, the pressurized oil causes the bypass valve to move against the force of the spring. The oil then goes through the open bypass valve. This oil flows through the bypass passage and to the final drive. Filter bypass switch (2) notifies the ECM of this occurrence. When the oil does not go through the filter element, the debris in the oil may damage other components in the system.Correct maintenance must be used to ensure that the filter element does not become full of debris and that the flow of clean oil is not stopped.