Rear wheel bearing
 

Hello I just replaced one front hub assy because it had movement up and down. I checked the rear both wheels have a little movement up and down not as much as the front though. I would like to know if this is normal or do I have to replace the wheel bearings since there is no complete hub assy for the rear. If so does anyone have a write up? Is this something I can do my self in the garage?
Much appreciated.