First of all, it's bullshit that it will wreck your bearing. The only special tools you will need are a vice and a press, and a little wheel bearing grease. Take the knuckle off (I'll assume you know how to do that much) and put the longest part of the knuckle in the jaws of the vice, you'll have to mess around with it to perfect the angle but you'll quickly figure it out. Next find a socket the size of the hub, smaller than the inner bearing race. You'll basically use it as a punch and beat the shit out of it with a hammer until the hub pops out- you're trying the drive the hub out from behind/the back side, if that makes sense. The bearing race will stay on the hub, don't worry about it, just make sure you don't get any debris into the exposed inner bearing that will stay in the knuckle. Now you can put the hub in the vice, tap the old stud out and the new one in. For reassembly a press isn't 100% necessary, but it makes it 100x easier. again you'll need a large socket to support the hub with- you'll be laying the hub studs down in the vice and if you don't put something underneath the hub, as you press the knuckle down the studs will just all press out of the hub. Anyway, position the knuckle carefully so that everything is square and press the knuckle back down onto the hub. I've done this job twice in the last few months and it took me around an hour start to finish on each. Don't forget to wipe out as much old dried up grease as you can and replace it with new clean wheel bearing grease. Good luck!
