NOZZLE AS-INJ 20R5803 - Caterpillar

Illustration 1 g00643720
824H Final Drive Components (1) Spindle. (2) Wheel. (3) Hub assembly. (4) Ring gear. (5) Planetary carrier. (6) Planetary gears. (7) Sun gear. (8) Cover assembly.
Illustration 2 g01129720
825H and 826H Final Drive Components (1) Spindle. (2) Wheel. (3) Hub assembly. (4) Ring gear. (5) Planetary carrier. (6) Planetary gears. (7) Sun gear. (8) Cover assembly.Each final drive has the same components. The final drive causes the last speed reduction and the torque increase in the power train.Ring gear (4) is fastened to hub assembly (3). Hub assembly (3) is connected to spindle (1) by splines. Spindle (1) is fastened to the axle housing. Ring gear (4), spindle (1), and hub assembly (3) are held stationary.The axle shaft is connected to the differential by splines. Sun gear (7) is connected to the axle shaft by splines. Sun gear (7) is engaged with planetary gears (6). Planetary gears (6) are held in planetary carrier (5). Planetary carrier (5) is fastened to wheel (2) .Power from the differential turns the axle shaft. The axle shaft turns sun gear (7). Sun gear (7) turns planetary gears (6). Ring gear (4) is held by hub assembly (3). The planetary gears move around the inside of ring gear (4). The movement of the planetary gears causes planetary carrier (5) to turn. The planetary carrier (5) is turned in the same direction as sun gear (7) but at a slower speed. The planetary carrier (5) turns wheel (2) .The final drive groups have a separate oil reservoir. The filler plug supplies the final drive with oil. The filler plug is located on cover assembly (8). Oil is removed from the final drive through a drain plug on the outside cover assembly (8).