My old trailer had regular (old fashioned)bearings and I hand packed them every few years. Had plenty of experience from bearings on cars.
It looks like the EZ Lube is a different breed of cat. From what I have gleaned from the Internet is that the inner bearing doesn't come out like the old style but requires a tool to break it loose.
I assume that removal of the hub is about like the old ones with a retainer and nut.
Haven't seen any decent instructions on the job but I am a little hesitant to tackle it without knowing what I am doing. All you see is hit the Zerk with a grease gun and you are good to go. Question is how far?????
Anybody have any suggestions or pointers?