wheel allows the planetary gear holder to turn. In this case there is an «engine brake» (decelerating effect on the engine). - The reduction ratio is : 2.39: 1 2nd GEAR (Positions «2» or « D») - Rear clutch (1) operating : it connects the forward movement sun gear (5) and the torque convertor, - The rear brake (6) immobilizes the reverse movement sun gear (7) which thus becomes a «reaction» element. - The planetary gear holder (4) turns «loose». - The reduction ratio is : 1.45: 1