LINES GP-ENGINE OIL DRAIN 1986000 - Caterpillar

Illustration 1 g02118917
(3) Bypass Valve (Transmission)
(4) Spring
(8) Outlet (Transmission)
(9) Inlet (Transmission)
(10) Pressure Tap (Outlet Pressure for the Transmission Filter)
(11) Filter Base
(12) Oil Sampling Port The power train oil system contains the following power train oil filter:
Transmission Charge FilterThe transmission charge pump sends oil to the transmission charge filter.Oil from the transmission charge pump enters filter base (11) at inlet (9). The oil goes through the filter base to the filter housing. Oil fills the space between the inside of the filter housing and the filter element. Normally, oil goes through the filter element and the oil leaves the filter base through outlet (8). The filter element prevents debris from going to the transmission hydraulic control.If the filter element becomes full of debris, the restriction to the flow of oil causes a pressure increase. The increase in pressure causes bypass valve (3) to open against spring (4). Then, the oil will flow directly from inlet (9) to outlet (8). The bypass switch sends a signal to the power train ECM. If the power train oil temperature is greater than or equal to 52 °C (126 °F), the power train ECM alerts the operator that the filter element is plugged. Caterpillar Advisor monitors the power train ECM. Caterpillar Advisor then generates a warning on the screen.Note: The filter bypass condition can be monitored through Caterpillar Advisor.