GASKET KIT 1896382 - Caterpillar

Illustration 1 g01781655
Location of torque converter relief valves (1) Torque converter inlet relief valve (2) Torque converter outlet relief valve
Illustration 2 g01781713
Torque converter inlet relief valve (1) Torque converter inlet relief valve (3) Spool (4) Shims (5) Passage to torque converter sump (6) Inlet passage
Illustration 3 g01781674
Torque converter outlet relief valve (2) Torque converter outlet relief valve (7) Shims (8) Inlet passage (9) Outlet passage to torque converter screen (10) SpoolTorque converter inlet relief valve (1) and torque converter outlet relief valve (2) are installed on the outside of the torque converter housing. The operation of both relief valves is identical.Torque converter inlet relief valve (1) controls the maximum pressure of the oil that is flowing into the torque converter. Supply oil comes from the torque converter charge pump section. The oil flows through the torque converter hydraulic filter. Before this oil flows into the torque converter, the oil is open to torque converter inlet relief valve (1) at inlet passage (6). Spool (3) will open when the pressure is above the relief pressure. When spool (3) is shifted, oil will flow through passage (5) to the torque converter sump. The relief pressure can be adjusted with shims (7) .Torque converter outlet relief valve (2) controls the minimum pressure of the oil that is inside the torque converter. Oil exits the torque converter through passage (8). If the oil is above the pressure setting of the torque converter outlet relief valve, spool (10) will be shifted. This allows the oil to exit through passage (9). Then, the outlet oil goes through the torque converter screen to the remainder of the circuit. The relief pressure can be adjusted with shims (7).