I just finished doing this on my 46 1 Ton. Someone else on here is into this as well. Check out the tech tip section for some guidance and pictures. Agree with all that has been said so far. You should also check your spring shackles and spring bolts. There are bushings that will wear in both of thos places too. If your spring have horizontal movement that is a problem you can fix easily with the axle off.
Everything on this component affects the wear on other parts. So check everything for wear and movement. When it is all together again get an alignment to make things perfect.
