FILM-IDENTIFICATION 2658936 - Caterpillar

Front Brake Cooling
Illustration 1 g00334001
(1) Torque converter and front brake cooling diverter valve
(2) Torque converter and front brake cooling oil cooler Torque converter and front brake cooling oil cooler (2) is located behind the engine and above the torque converter. Engine coolant from the water pump flows through the torque converter and front brake cooling oil cooler. Then, the engine coolant flows back to the cylinder block.The front brakes are cooled by oil. The cooling oil comes from the torque converter outlet relief valve. When the parking brakes are applied or when the secondary brakes are applied, the parking and secondary brake valve also provides cooling oil.The oil flows through the torque converter outlet relief valve to the torque converter and front brake cooling screen. The oil then flows to the torque converter and front brake cooling diverter valve (1). A small amount of oil from the torque converter outlet relief valve will flow in order to lubricate the pump drive.When the service brakes are applied or when the retarder is used, the torque converter and front brake cooling diverter valve (1) will send the oil through torque converter and front brake cooling oil cooler (2). When the front brakes are not needed, torque converter and front brake cooling diverter valve (1) will send the oil through the oil cooler bypass. In either situation, the oil will then flow to the front brakes. After the oil flows to the front brakes, the oil will return to the torque converter, hoist,