The axle seal is important because it retains the lubricant like the transmission fluid from leaking out. It seals the space in the middle of the CV axle and transmission.
Axle shaft seal functionThe axle shaft seal is installed in the axle cover of a firm differential to secure around the axle shaft. The seal allows the axle shaft to remain lubricated without having oil leaking over the wheels. It also prevents any dirt or debris from accessing the axle shaft. A proper functioning axle shaft can stop any oil from leaking but with age, the seal can begin to fail.
Common problems with a bad axle shaft sealA bad axle shaft seal can lead to leaking, wearing out, and uncommon noises from the differential.