Front wheel Bearing Removal 1986

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neonwall
Posts: 17
Joined: Mon May 21, 2018 7:27 pm

Front wheel Bearing Removal 1986

Post by neonwall » Thu May 31, 2018 10:37 pm

Hey all, couple of questions regarding front wheel bearing removal on 1986 R80RT.

First off anyone got any creative ways to remove without specialist puller? I have tried tapping out but inner sleeve prevents any purchase on Bearing.

Also once they are out the manual says to heat hub to 100 deg before installing new bearings but warns to remove brake disc? Is this necessary? If so are the discs Riveted or heat shrunk onto hub? (can tell the difference) One side is domed and the other just a blank face pin...

Thanks in advance

Regards
Attachments
Screen Shot 2018-06-01 at 2.30.38 PM.png
Screen Shot 2018-06-01 at 2.30.38 PM.png (111.68 KiB) Viewed 111 times
1986 BMW R80RT

Beemerboff
Posts: 48
Joined: Thu Feb 08, 2018 12:11 am

Re: Front wheel Bearing Removal 1986

Post by Beemerboff » Thu May 31, 2018 11:50 pm

I would heat the hub to remove the bearing too.
I was able to tap the bearing out of a warm hub, but I had to grind the end of a old screwdriver to fit
If the book says remove the disk it would probably take less time to do than it took to post the question, so just do it the way that the factory manual tells you how - clue, there are bolts involved.
Loctite and others make a freeze spray, with a warm hub and a quick spray on the bearing some folks report that they just bang the hub down on a lump of wood and the bearing falls out.
Replacement is the same , warm hub and frozen bearing and they almost fall in.

neonwall
Posts: 17
Joined: Mon May 21, 2018 7:27 pm

Re: Front wheel Bearing Removal 1986

Post by neonwall » Thu May 31, 2018 11:55 pm

Thanks appreciate the response. The image I've attached is the extent of the material I have on removal of bearings. I think I need to invest in a Clymer for a more detailed breakdown. As mentioned in the first post the discs are not bolted to the hub but pinned, assumably I can heat the disc and tap off the pins?

Regards
1986 BMW R80RT

Beemerboff
Posts: 48
Joined: Thu Feb 08, 2018 12:11 am

Re: Front wheel Bearing Removal 1986

Post by Beemerboff » Fri Jun 01, 2018 4:32 am

I have a 86 G/S , and the disk is riveted to a carrier, and the carrier is bolted to the hub.
My mistake if your hub does not have a separate carrier - I have never seen one that way.

neonwall
Posts: 17
Joined: Mon May 21, 2018 7:27 pm

Re: Front wheel Bearing Removal 1986

Post by neonwall » Fri Jun 01, 2018 5:25 am

Well thats embarrassing, I was so focussed on the rivets I didn't even notice the bloody bolts. What an idiot....

Cheers that clears that up.....
1986 BMW R80RT

Wobbly
Posts: 247
Joined: Mon Aug 07, 2017 8:48 pm

Re: Front wheel Bearing Removal 1986

Post by Wobbly » Fri Jun 01, 2018 4:34 pm

neonwall wrote:
Fri Jun 01, 2018 5:25 am
Well that's embarrassing, I didn't even notice the bloody bolts. What an idiot....
No "name calling" allowed.... even if it's at yourself. :lol:
After 20 years as a professional bike mechanic and 30 years as an engineer I know just enough to be dangerous !

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