2WD Models (except A132L): 1 - intermediate drive gear, 2 - intermediate shaft, 3 - intermediate drive gear, 4 - rear planetary gear, 5 - front planetary gear, 6 - planetary gear, 7 - torque converter, 8 - input shaft, 9 - drive gear shaft main gear, 10 - drive shaft, 11 - drive shaft, 12 - differential
planetary gear (2WD models except A132L): 1 - first gear and reverse brake (Bj), 2 - freewheel №2 (B3), 3 - second gear brake (B2). 4 - forward clutch (WITH1), 5 - brake for engine braking in second gear (B1). 6 - direct clutch (C2), 7 - front planetary gear set, 8 - freewheel No. 1 (F1), 9 - rear planetary gear set, 10 - reduction planetary gear set, 11 - reduction planetary gear clutch (C3), 12 - freewheel of the reducing planetary gear set Ns3 (F3), 13 - brake of the lowering planetary gear set (IN4)
The planetary gearbox contains three planetary gear sets, three lockup clutches, four brakes and three freewheels.
Power from the engine through the torque converter is transmitted to the input shaft of the planetary gearbox.
Gear shifting is accomplished by activating a specific combination of two controls that changes the speed of the output shaft.
Elements of the planetary gearbox
1. Forward clutch (WITH1) - connects the input shaft and the epicycle of the front planetary gear set.
2. Direct clutch (WITH2) - connects the input shaft and the sun gears of the front and rear planetary gear sets.
3. Reduced planetary clutch (WITH3) - connects the sun gear of the reduction planetary gear set and the carrier of the reduction planetary gear set.
4. Brake providing engine braking mode in second gear (IN1) - stops the sun gears of the front and rear planetary gear sets.
5. Second gear brake (IN2) - stops the outer race of freewheel #1, thus preventing the sun gear of the front and rear planetary gears from rotating counterclockwise.
6. First gear and reverse brake (IN3) - stops the carrier of the rear planetary gear set.
7. Downshift brake (IN4) - stops the sun gear of the reduction planetary gear set
8. Clutch No. 1 freewheel (F1) - with the brake of the second gear B2 disables counterclockwise rotation of the front and rear planetary sun gears.
9. Clutch No. 2 freewheel (F2) - prohibits the rotation of the carrier of the rear planetary gear set counterclockwise.
10. Downshift clutch (F3) - prohibits clockwise rotation of the sun gear of the lowering planetary gear set.