8 3/4 axle shaft seals

Dave the most common seal leaks are the inner seals because they are what holds in the gear lube and all you have to do is pull the axles and change out the inner seal(s). The outer seal just seals off the dust from getting into the greased bearings and holds the grease intact. One other thing to note is if the inner seal did let loose it usually washes out the grease from the bearing so you have to re-grease the bearing(s). I use a needle point grease fitting to re-grease them.