Geartrain

Gear train
Power is transmitted from the torque converter to the Ravigneaux gear train components through the input shaft and forward clutch cylinder.
^ The gear train contains a Ravigneaux planetary set connected by dual pinion gears.
^ By holding or driving certain components of the gear set, four forward ratios and one reverse ratio are obtained and transmitted to the output shaft. The ratios are as follows:





^ Components of the gear train can be held by bands or clutches and driven by clutches only.

This transmission uses:
^ two bands.
^ two one-way clutches (one roller, one mechanical diode).
^ four friction clutches.

Planetary Gear Set
The planetary gear set in the transmission is a Ravigneaux-type set consisting of the following components:
^ forward clutch sun gear
^ reverse clutch sun gear
^ a pinion carrier
^ long and short pinions
^ output ring gear

Components are held or driven to produce forward and reverse gear ratios.

Input Shaft
The forward clutch cylinder and shaft transfers speed and torque from the converter turbine to the gear train. This shaft is splined to the turbine on one end and to the forward clutch sun gear and stub shaft on the other end.

Stub Shaft
The stub shaft transfers power from the input shaft to the planet carrier (through the direct clutch) during third and fourth gear operation.

Output Shaft
The output shaft provides torque to the driveshaft and rear axle assembly. It is driven by the ring gear of the planetary gear set.