I have a 88 XJ and in the process of replacing the seals. The seals do come out through the inside requiring the carrier to be removed. This is a fairly simple process. But I have run into a little set back on mine.
I have a LockRight locker and a Posi-Lok cable actuator in mine. When I tried to remove my inner axle shaft on the passenger side, it would only move about 1 inch. From everything that I have researched before I started, this axle shaft should just slide out. Somehow mine is unfortunate to have some sort of clip that holds the axle in. I am going to have to disassemble the locker piece by piece while it is still in the carrier to gain access to this clip.