Automatic Transmission/Transaxle: Description and Operation

DESCRIPTION
This transmission is a fully automatic unit consisting primarily of a three-element hydraulic torque converter with a converter clutch, a compound planetary gear set and an overdrive unit. Five multiple-disc clutches and a band provide the friction elements required to obtain the desired function of the compound planetary gear set and the overdrive unit

The torque converter couples the engine to the overdrive unit and planet learn through oil and provides torque multiplication. he combination of the compound planetary gear set and the over-drive unit provides four forward ratios and one reverse. Fully automatic changing of the gear ratios is determined by vehicle speed and engine torque.

The hydraulic system in this transmission is pressurized by a variable capacity vane type pump to provide the working pressure required to operate the friction elements and automatic controls.