i agree, no hammer. don't see why the non drive side cups won't come out. i am old school, so excuse me here: but IF it has a lockring, i assumed it is out and that you are untightening in th eproper direction. my thought is that it is the driveside cup that won't budge, if the axle is allready removed. if im wrong (and probably am) and its some sort of cartridge, then i don't know what to tell ya. picts help.