Just did this a while ago. The hub and bearings are one piece. It's held on with one nut under the round dust cap. The torque on that nut is pretty crazy, 258ft/lbs. You'll need a special ratchet to crank that down, or just tighten it as much as you can with an impact wrench. If you're near Los Angeles, I can lend you the torque wrench you'll need.
Be sure to buy new hub nuts and dust caps. You're not supposed to re-use them, and they're cheap to buy anyway.