Rear drive shaft oil seal replacement

[plip]

Good day to the all Forum comunity.

I am new herer and this is my first post. I am located in Switzerland an Onwers of an S4 Avant 1999.

I am replacing the main drive shaft since with play and noisy. Noticed that rear oil seal need attntion as well. Now i can i get to the seal ? or better say, how can i get the flange out from the rear diff ? Do i neet to take tha last portion of the diff off to get the flange off and get to replace the seal ?

Any hint will be higlhy appreciated.

Kindest rgds
Gianni