How do I remove the rear wheel bearings? Reason, I'm getting a hum after a few miles, like after it heats up some, and it stays the same. I want to remove the bearings to either re-pack or just replace. It wasn't obvious to me how to go about it.

you'll have to replace them, they're sealed. Remove the brakes, then there should be 4 bolts that hold the hub to the knuckle, then remove the hub. the bearing is in there and will need to be pressed out and a new one pressed in.