last time l replaced one, l got the bearing pressed in, then with the hub knuckle(?) (the bit with the bearing in that attaches to the shock ect..) back on the car, l pushed the hub on as far as l could by hand which was enough to get the thread on the drive shaft/CV joint through the hub, put the nut on the end and used a ratchet to do it up and pull the hud into the bearing (dont forget to used a little lube ) prob not the right way, but this did the job for me anyway. hope it helps