FINAL DRIVE AND WHEELS
Brake disc. 4.
8. Final drive hub.
Ring gear. 6.
The final drive is a planetary gear system. Axle (6) is
connected to the differential at one end and to the sun
gear (7) at the other end with splines. The ring gear (3)
of the planetary system is connected to the hub (8) with
splines. The hub is connected to the spindle (5) with
splines. The spindle is fastened to the axle housing.
When axle (6) is turned by the differential, the sun
gear (7) turns the planet gears (9). Because the ring
gear (3) is held by the axle housing, the planet gears (9)
(turned by the sun gear) make the carrier (4) turn at a
slower speed than the sun gear (7). The carrier (4) is
connected to the wheel assembly (2) and the rim
assembly and the power is sent to the ground.