Freelander System Description and Operation
AUTOMATIC GEARBOX - JATCO
44-12
DESCRIPTION AND OPERATION
2nd Gear (D selected)
1 2-4 brake
2 Front planetary gear
3 Rear planetary gear
4 Low one-way clutch
5 Low clutch
6 Input shaft
7 Output gear
8 Idler gear
9 Reduction planetary gear
10 Reduction one-way clutch
11 Reduction brake
On 2nd gear selection, the low clutch, the 2-4 brake, and the reduction brake are engaged. During acceleration in 2nd
gear, the reduction one-way clutch is locked. Power flows from the input shaft to the rear sun gear to rotate it clockwise
and the rear pinion gear rotates anti-clockwise. The 2-4 brake locks the front sun gear. The front pinion gear rotates
clockwise to force the front planetary carrier to rotate clockwise. The driven power rotates the front internal gear
clockwise. The output gear rotates faster due to the front internal gear rotation. The output gear rotation is transmitted
to the reduction gear. The reduction gear rotates clockwise and transmits the power to the road wheels in the same
way as 1st gear.