• Welcome, Guest! We hope you enjoy the excellent technical knowledge, event information and discussions that the BMW MOA forum provides. Some forum content will be hidden from you if you remain logged out. If you want to view all content, please click the 'Log in' button above and enter your BMW MOA username and password.

    If you are not an MOA member, why not take the time to join the club, so you can enjoy posting on the forum, the BMW Owners News magazine, and all of the discounts and benefits the BMW MOA offers?

  • Beginning April 1st, and running through April 30th, there is a new 2024 BMW MOA Election discussion area within The Club section of the forum. Within this forum area is also a sticky post that provides the ground rules for participating in the Election forum area. Also, the candidates statements are provided. Please read before joining the conversation, because the rules are very specific to maintain civility.

    The Election forum is here: Election Forum

Rear Wheel Seal

RPGR90s

Member
I'm doing some winter maintenance on my '74 R90s and have re-packed the rear wheel bearings.

One thing I noticed is that thrust sleeve that slides into the bearing cover is a bit loose. It's never been a real tight fit actually, but after measuring, the seal is 22mm in diameter (as it's supposed to be), but the thrust sleeve measures 21.9mm, so as expected, it's not sealing very well.

The seal appears to be correct, (label on the back says 36x22x8).

And doing some searching, I also find photos of the thrust washer being installed under the cover, where mine has always been installed over the cover.
photos attached

The two larger photos show:
1. my cover w/o the thrust washer
2. my cover with the thrust washer installed
3. a photo showing the thrust washer installed behind the cover

Any help/clarification would be appreciated.
 

Attachments

  • Rick R90s cover without top hat thrust.jpg
    Rick R90s cover without top hat thrust.jpg
    98.1 KB · Views: 75
  • Rick R90s with top hat thrust.jpg
    Rick R90s with top hat thrust.jpg
    81.9 KB · Views: 75
  • seal2.jpg
    seal2.jpg
    14.7 KB · Views: 72
Back
Top