I think some zerk fittings are threaded in like a bolt. You might check that first before undergoing the replacement.

Q; I've looked through the service manual and can't find a page that shows all of the lube points. Does one exist? I've lubed all of the zerk fittings I could find but I want to make sure I'm not missing any. The ones I found were a bit dry and I'd like to add that to my maintenance routine before Moab.