Axle, Integral Carrier—7.5 Inch Ring Gear

The rear axle drive pinion receives its power from the engine through the transmission and driveshaft. The pinion gear rotates the differential case through engagement with the ring gear, which is bolted to the case outer flange. Inside the case, two differential pinion gears are mounted on the differential shaft which is pinned to the case. These pinion gears are engaged with the side gears, to which the axle shafts are splined. Therefore, as the differential case turns, it rotates the axle shafts and rear wheels. When it is necessary for one wheel and axle shaft to rotate faster than the other, the faster turning side gear causes the pinions to roll on the slower turning side gear to allow differential action between the two axle shafts.

Noise Acceptability

A gear-driven unit, especially an automotive drive axle, will produce a certain amount of noise. Some noise is acceptable and may be audible at certain speeds or under various driving conditions, such as on a newly paved blacktop road. The slight noise is in no way detrimental to operation of the rear axle and must be considered normal.