Hi,
Great Car!!! My best friend had a W31 that I believe was the same year.
As far as the bearing is concerned, it should be mounted in the axle tube. Take a look through this link. It is on a truck, but the idea should be the same.
https://www.2carpros.com/articles/rear-axle-seal-replacement
Page down to steps 4 or 5. Step 5 discusses the bearing and seal replacement procedures. If you watch the video in step 4, it explains the entire process which may help.
Let me know.
Take care,
Joe
Sunday, September 1st, 2024 AT 8:35 PM