Sorry it took me so long to get back with you. I apologize, you are right about the ring and pinion. I put that wrong about my Explorer. Our tech did not change the bearings he changed the whole rearend. He said it was the ring and pinion, but it would not do any good to just replace them, the only way to solve the problem was to put a new rearend in it. You know, I am a women and I do not know a whole lot about these things.
Thanx, Tammy