COOLER AS-TRANSMISSION OIL 3429836 - Caterpillar

Illustration 1 g03802156
Typical axle
(1) Rear axle
(2) Final drives
(3) Differential
(4) Transmission
Illustration 2 g01394790
(6) Planetary gear set
(7) Ring gear
(8) Reaction hub
(9) Sun gear
(10) Splined coupler
(11) Splined shaft
(12) Side gear
(13) Pinions
(14) Pinion shaft
(15) Bevel gear
(16) Carrier The piston motor is connected to transmission (4). The transmission (4) is connected to the input yoke on differential (3). Power from transmission (4) drives the pinion in rear axle (1).The rear axle (1) is stationary and does not oscillate. The rear axle (1) is supported by the rear frame. The hitch which joins the front frame and the rear frame allows the rear frame to oscillate.The power from the transfer gear group turns bevel pinion (14) in rear axle (1). The power enters the axle through the bevel pinion. The bevel pinion turns bevel gear (15) which is fastened to the differential case.Power is transferred through the differential by pinions (13) and side gears (12) to splined shaft (11). The shaft is joined by a splined coupler (10) to sun gear (9) in the final drives. The main components of the final drives are carrier (16), planetary gear set (6), ring gear (7), and sun gear (9). Each final drive has the same components. The final drives cause the last speed reduction and the torque increase in the drive train.Three planetary gear sets are mounted in the carrier. The axle shaft fits into the internal splines of the carrier.As the sun gear is driven by the differential, the planetary gears are forced to revolve around the inside ring of the ring gear. The movement of the planetary gears around the ring gear causes the planetary carrier and the wheel hub to rotate. This transfers power to the rim and the tire which bolts to the flange on the axle shaft.