Those are great pics Dan, you can really get an idea of the internals in question here.

In the first pic showing the Centa black hub, you can almost see what looks to be metal lathe jaw marks (4 of them at 5 o'clock); similar marks on the next Centa black hub pic (2 of them at 8'clock).

Obviously any marks or irregularities on this high speed rotating / sealing surface will cause oil leak / seal failure issues.

Any chance there are close up or more detailed pictures of the Centa black hub part?

Paul, maybe you can get a good look (and some up-close pics) at your Centa black hub part when your M3W comes apart. Oh, and maybe a pic to the 'special tool'.

Last edited by 3Gs; 27/08/18 08:12 PM.