Originally Posted by guitar maestro
Even if you had a press, you'd need to have the proper support from underneath the bearing area to press the old bearing out. You can't just set the whole knuckle down within the press suspended by its three bushing housings----you'd have a knuckle split right down the middle into two pieces, at which point the bearing will come out with ease.
If you have another vehicle, then take the knuckle out, take it to a machine shop with a new bearing. Let them press out the hub and bearing. If the hub is good, then they should be able to put it back together with the new bearing. If the hub is toast, then make sure you tell them to tell you if the hub shows any signs of wear prior to them blindly putting it all together. If you don't have another vehicle, you should take another good knuckle w/ hub just in case to make things quicker.
This is the way I would do it; Get the new knuckle, both if you can afford it.
Check them while the center bolt is still tight; wiggle it side to side, and see if there's play.
If there's no noticable play, I'd swap those to the car, which gets it on the road immediately.
Then have the other set rebuilt with Timken beasings, "Set 49".
If you have to buy a hub, it might be just as expensive to do the mustang pattern, making a swap more justifiable.
When you save up enough for the fronts, buy whatever you built the rears for, swap them in, and it's good as new.
Remember to score a cheap set of mustang wheels at least Before you do the swap, lol.
I had mine replaced at work (we do have a 20Ton press) and it was about all that press wanted, not the type of equipment one can afford to have at home.
The key with these hubs is to do them hot, ~150, and ping them with a small hammer as you add pressure. I rarely have to go over ~8000psi now I've done it a few times.
But I did break one of the first in half; my support slipped about 15k.
GM is right; the bearing comes right out when that happens.
If the bearing has gotten hot and spun the inner races on the hub, you'll definitely want to replace the hub. If you don't, the bearing will go out again in short order.
If it's worn at all, it will slide, and get hot, and fail.
If the main axle bolt loosens up, it will wear this hub, and the axle; so make sure it's tight.
Also, you want the "Three nuts stacked in a cage" type nuts for both front and rear; the Dorman ones are deformed, and eat the axle and spindle Way too much.
Here's something I noticed: