Originally Posted by Pacnorthcuda
It’s a 489 and nobody has mentioned the god-forsaken crush sleeve. If the sleeve was eliminated with a solid spacer during the last rebuild great, but if it still uses one the correct fix involves removing the carrier, the diff, and the pinion for a new sleeve or spacer.

Sorry, but that’s the nature of the beast. You can attempt to just replace the seal and return the pinion nut to its exact location, but if you don’t get it right you are on borrowed time.

I was in the process of writing almost the exact same thing but stopped to do something more pressing. The yoke has been off twice for seal replacement and who knows wether the crush sleave was even replaced when the r&p was changed. I agree 150% that the whole thing should come apart. Sorry

In theory, there is no difference between theory and practice. In practice, there is.