my dana 44 in my old 78 cherokee was like this. it had an inner seal. just pack it with wheel bearing greese... now the wierd thing is i had a non c-clip axle in my 88 comanche and i don't remember an inner seal. i went through this on my cherokee. it seems that some get lubed by the gear lube and some use the bearing greese. i guess jeep couldn't make up their mind on this. i believe i used a slide hammer with a hook on the end to remove the old inner seal.