planetary gear (A132L): 1 - intermediate drive gear, 2 - epicycle of the rear planetary gear set, 3 - first gear and reverse brake (IN3), 4 - freewheel №2 (F2), 5 - second gear brake (IN2), 6 - forward clutch (WITH1), 7 - brake for engine braking in second gear (IN1), 8 - Direct clutch (WITH2), 9 - intermediate shaft, 10 - carrier of the rear planetary gear set, 11 - freewheel No. 1 (F1), 12 - sun gears of the front and rear planetary gear sets, 13 - carrier of the front planetary gear set, 14 - input shaft
A132L: 1 - intermediate drive gear, 2 - intermediate drive gear, 3 - countershaft, 4 - rear planetary gear set, 5 - front and rear planetary sun gears, 6 - front planetary gear set, 7 - input shaft
The planetary gearbox consists of two planetary gear sets, two lockup clutches, three brakes and two freewheels.
Elements of the planetary gearbox
1. Forward clutch (C1) - 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. Brake providing engine braking mode in second gear (IN1) - stops the sun gears of the front and rear planetary gear sets.
4. Second gear brake (IN2) - stops the outer ring of the freewheel No. 1, thus prohibiting the rotation of the sun gears of the front and rear planetary gears counterclockwise.
5. First gear and reverse brake (IN3) - stops the carrier of the rear planetary gear set.
6. Clutch No. 1 freewheel (F1) - with 2nd gear brake engaged B2 disables counterclockwise rotation of the front and rear planetary sun gears.
7. Clutch No. 2 freewheel (F2) - prohibits the rotation of the carrier of the rear planetary gear set counterclockwise.