Fine bronze dust in diff oil

[Ian Williams]

The pinion assembly is the usual culprit in A7 diff demise in my experience, very often the lock nut on the thrust bearing is not tight enough, the bearing spacer then wears creating end float. This state of affairs with the pinion punching back and forth is not favourable for many components as you can imagine. Contrary to Chris experience I have successfully swapped around CWP and even got miss matched CWP to run quietly, but there is a LOT of work and messing around to achieve this.