HOSE AS 2221301 - Caterpillar

Illustration 1 g00332179
(1) Torque converter and front brake cooling screen
(2) Pressure switch
Illustration 2 g00332180
(2) Pressure switch
(3) Outlet passage
(4) Inlet passage
(5) Element
(6) Screen housing
Illustration 3 g00332181
View A-A
(2) Pressure switch
(7) Spring
(8) Bypass valve The torque converter and front brake cooling screen (1) is fastened to the left side of the main frame behind the front wheel.Oil from the torque converter outlet relief valve will flow to torque converter and front brake cooling screen (1).Oil flows through inlet passage (4). The oil fills the space between the inside of screen housing (6) and element (5). During normal operation, the oil flows through element (5) and out outlet passage (3) to the torque converter and front brake cooling diverter valve. Element (5) stops any debris that is in the oil.If the element becomes full of debris, the restriction to the flow of oil will cause a pressure increase inside the filter. The pressure oil causes bypass valve (8) to move against the force of spring (7). Also, the pressure switch (2) will be activated and an alarm will be registered in the cab.The oil then flows past the open bypass valve and to the torque converter and front brake cooling diverter valve. When the oil does not go through the filter element, the debris in the oil will cause damage to other components in the hydraulic system.Correct maintenance must be used in order to make sure that element (5) does not become full of debris.