Hi Guy's, I need to change the rear end pinion seal on the wifes 03 excursion diesel4x4. Is this a simple unbolt the flange replace the seal from the outside procedure. Or is there a crush sleve I have to be worried about over crushing and changing the pinion to ring gear clearance. Thanks, adown

Response may be late but there is a crush sleeve and preload must e set.

easy fix any reputable shop could do.