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| Illustration 1 | g00951687 |
Torque Converter (1) Rotating housing (2) Impeller (3) Gear (4) Inlet port (5) Input shaft (6) Turbine (7) Stator (8) Adapter (9) Carrier (10) Outlet port | |
The torque converter is located at the input end of the transmission. The transmission case houses the torque converter that is bolted to the flywheel housing. Output torque from the torque converter enters the countershaft transmission through the input shaft.
Oil for the operation of the torque converter is supplied by the transmission oil pump. Oil from the transmission oil pump flows through the transmission filter to the main relief valve. The main relief valve maintains a constant supply pressure to the transmission modulating solenoid valves and supplies P2 converter inlet oil to flow to the torque converter. The torque converter inlet relief valve limits the oil flow to the torque converter to a maximum pressure of 900 ± 70 kPa (130 ± 10 psi). The torque converter inlet relief valve is located in the transmission case beneath the transmission control manifold.
Rotating housing (1), impeller (2), and oil pump drive gear (3) are driven by the flywheel. These components rotate as a unit at the engine speed.
The oil from the transmission hydraulic control main relief valve enters the torque converter through inlet port (4) in carrier assembly (9). The oil is directed to the inlet port by a passage in the torque converter housing. From inlet port (4), the oil flows through carrier assembly (9) and through a passage in impeller (2) .
As impeller (2) rotates, the impeller acts as a pump in order to direct the oil to turbine (6). The turbine is fastened to the hub assembly with bolts. The hub assembly is connected to transmission input shaft (5) by splines. The turbine directs oil to stator (7) that is held stationary. The stator is connected to adapter (8) with splines. Adapter (8) is connected to carrier assembly (9) with splines. Carrier assembly (9) is bolted to the transmission case.
The oil flows through a passage in carrier assembly (9) to outlet port (10). From outlet port (10), oil is directed to the torque converter oil cooler. The temperature of the oil is lowered in the torque converter oil cooler. From the transmission oil cooler, the oil flows to the transmission. The oil cools the internal components of the transmission. The oil lubricates the internal components of the transmission.