I've searched and some threads say the bearings only can be replaced by buying a new hub assembly. Other say you need special tools to get the races out of the hub. Others say you don't need any special tools and they are easily replacable. What's the deal?

I have some play and "clunk" in my front wheels when I rock them. I also hear a low pitched drone while driving.. I think they need to be replaced ASAP.

I've never done front wheel bearings before.. the procedure I am worried about is setting the bearing preload. I've read that you torque the nut down until you can't freely turn the rotor, then back it off 130 degrees and you should be set. Any help is greatly appreciated!