Nag1 Automatic Transmission (Service Information): GEARTRAIN-Planetary: Description

Fig 1: Planetary Geartrain

Courtesy of DAIMLERCHRYSLER CORP.

1 - ANNULUS GEAR

2 - PLANETARY PINION GEARS

3 - SUN GEAR

4 - PLANETARY CARRIER

Three planetary gear sets are used to produce the different gear ratios. These are located in the mechanical part of the transmission as the front, middle and rear planetary gear sets. See Fig 1.