First, I would tell you to jack up the vehicle and pull the rotors off and to clean and inspect the bearings. A lot of times Exploder owners go in for an alignment and the mechanic says it's the bearings, can't align the Ex. When in fact it could be steering or other suspension problems. So first check the bearings yourself and determine if they are bad.
I couldn't really find an old thread with "how to", but for wheel bearing replacement you need:
Parts: Inner & Outer Bearings and Races and a Grease Seal. Timken is the only bearings I use. They cost more, but they are definately worth it.
Tools: Getting the Rotor off requires a magnet for the hub nut key. A 2 3/8" Ford Socket for the hub nut. Every auto parts store has them now. A brass drift with a circular end to pound out the races. You can use the old races to pound in the new ones, but they make a bearing driver set that is better, but you probably won't use it much, so Harbor Freight. The bearing driver set can also be used to drive the seals.
Job:
Remove rotor (which means caliper and hub nut hardware) pull the bearings out and use brake parts cleaner to clean them check them for heat scoring and odd clicks. If they are good keep using them. If they are bad, replace them and always use new races.
Looking through the rotor you should see the lip of the race and an indentation in the rotor, use your brass drift and a hammer to pound out the races. To install, like I said it is handy to have a bearing driver set. You are going to need wheel seals regardless, to check the inner bearing. After putting in the new races, re-install and your done.
If I left anything out, someone else will be chiming in shortly.
Thanks, Matt
