The main gear of the front axle of the Kamaz car
The main drive of the front axle of cross-country vehicles is two-stage, consists of a pair of bevel gears with spiral teeth (driving and driven) and a pair of helical gears (driving and driven).
The transmission of torque from the drive shaft of the front axle of the transfer case through the driveline is carried out to the flange 16 of the drive shaft 11, then through a pair of bevel gears 12 and 21 to the drive spur gear 23 (Fig. 1)
From the driving spur gear 23, the torque is transmitted to the driven spur gear 2, from which - to the differential housing 3 and the differential cross 32 fixed in it.
On the spikes of the cross 32, satellites 33 are installed on bronze bushings, through which the torque is almost equally distributed between the left and right side gears 6 and is transmitted to the drive wheels through the axle shafts.
Unlike the main gears of the intermediate and rear axles, the crankcase 31 of the main gear of the front axle is fixed to the axle crankcase by a flange located in a vertical plane.
Therefore, the crankcase of this main gear is not interchangeable with the crankcases of the main gears of the intermediate and rear drive axles.
In addition to the crankcase in the main gear and differential of the front axle, differential housing 3, drive shaft 11, drive shaft bearing 8 and cover 17 are not unified with parts of the intermediate and rear drive axles.