See if you can remove a rubber boot on the non-drive side to access the cone locknut and then the cone to loosen the wheel bearings.
Concerning the worn axle...since you haven't disassembled the hub yet, I would assume it is the axle stub that protrudes pass the lock nuts and sits in the drop out?
are they quick release wheels?
Take pictures.
Last edited by zebede; 09-27-20 at 06:06 AM.