I replaced 1 side last year. Did it in the shop with a mechanic present. The wheel bearing turned out to be shot too, so we replaced the whole hub. Toughest part was getting the knuckle loose from the axle. I never saw so much violence used (BFH) to take something apart without destroying it. Whole job took about 1.5 hour. But as said, an experienced mechanic helped me out. Sometimes an
axle seal also turns out to be bad...