Self-Study Program

18
367_073
Reference
You will find explanatory notes on the
schematic diagram of the planetary gearbox
on page 22 and in SSP 283 on page 55.
367_022
Planetary gearbox
The 09D gearbox is based on the Lepelletier planetary gear set concept
(6 forward gears and R gear).
The Lepelletier planetary gear set is based on a single planetary gear
set (primary planetary gear set) and a Ravigneaux planetary gear set
further down the drive train (secondary planetary gear set).
Gearbox subassemblies
Sun gear S1
ATF pump
Gearbox output shaft
Single planetary
gear set
Single planetary gear set
(primary planetary gear set)
Freewheel F
Ravigneaux planetary gear set
(secondary planetary gear set)