Descrição da transmissão – visão geral

Automatic Transmission/Transaxle – Vehicles With: 307-01-6 307-01-6 6-Speed Automatic Transaxle - 6R80 DESCRIPTION AND OPERATION Hydraulic Systems Fluid Pump The torque converter is supported in the fluid pump by a needle roller bearing. The fluid pump is driven directly from the engine by the torque converter shell and supplies transmission fluid to the transmission and the hydraulic control unit. The fluid pump draws in transmission fluid through a transmission fluid filter and delivers it at high pressure to the main pressure valve in the main control valve body unit. The valve adjusts the pressure and returns excess transmission fluid to the transmission fluid pan. Fluid Filter All transmission fluid that is picked up from the transmission fluid pan passes through the transmission fluid filter. The transmission fluid filter and its accompanying seal are part of the transmission fluid path from the pan to the transmission fluid pump. Single Planetary Gearset The single planetary gear O/D carrier is driven by the input shaft. The single planetary gear set consists of the following components: ‡ One sun gear ‡ Four planetary gears meshing with the sun gear ‡ One planetary carrier ‡ One ring gear Ravigenaux Planetary Gearset The Ravigenaux planetary gearset is splined to the output shaft and consists of the following components: ‡ Two sun gears of different sizes ‡ Three short planetary gear pinions meshing with the sun gears ‡ Three long planetary gear pinions meshing with the sun gears ‡ One planetary carrier ‡ One ring gear Output Shaft The output shaft provides torque to the driveshaft and rear axle assembly. It is driven by the ring gear of the planetary gearset.