CUSHION AS 2837980 - Caterpillar

Illustration 1 g00361434
Rear axle housing (1) Filter bypass switch (2) Rear axle power train filter (3) Level switch for the rear axle oil (4) Rear axle oil flow control valve and relief valve
Illustration 2 g00284473
Rear axle power train filter (6) Bypass valve (7) Inlet passage (8) Spring (9) Bypass passage to the rear axle housing (10) Outlet passage (11) Element (12) Housing
Illustration 3 g00361435
Inside rear axle housing (13) Inlet line for the filter (14) Outlet line for the filter (15) Bypass line for the filterRear axle power train filter (2) is mounted to the back of the rear axle housing. Oil from rear axle oil flow control and relief valve (4) flows through inlet line (13) to rear axle power train filter (2). Oil then flows through outlet line (14) back to the rear axle oil flow control and relief valve (4). Inlet line (13) and outlet line (14) are located inside the rear axle housing.Filter bypass switch (1) and the two rear axle oil liquid level switches (3) send input signals to the Vital Information Management System (VIMS).Oil from inlet line (13) flows into inlet passage (7). This oil fills the space that is between element (11) and the inside of housing (12). During normal operation, the oil flows through element (11). The oil then flows through outlet passage (10). Element (11) 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 pressure oil causes bypass valve (6) to move against the force of spring (8). The oil then goes through open bypass valve (6). This oil flows through bypass passage (9) and bypass line (15) to the rear axle housing. Filter bypass switch (1) notifies the VIMS of this occurrence. When the oil does not go through the filter element, the debris that is in the oil may cause damage to the other components in the system.Correct maintenance must be used to ensure that element (11) does not become full of debris and that the flow of clean oil is not stopped.