The New And Improved Unofficial R65 Forum V2
Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: jamestnewsonr65 on June 08, 2014, 03:51:42 PM
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I need a little help in identifying how this lot goes back together for installation into some newly refurbished wheel hubs.
I have a couple of bags of parts from the front and the rear wheels when the bearings and everything were removed, but looking at the pieces I have and the parts diagrams, it is very difficult to see which pieces go in which order.
This first pic is of the pieces from the front wheel.
(https://bmwr65.org/smf/proxy.php?request=http%3A%2F%2Fjamesnewson.co.uk%2FSTUFF%2FR65%2FFrontWheel_parts.JPG&hash=92b9c1ca8983b897e6269cb82adbb04275c963b2)
This second image are the pieces which I assume come from the rear wheel. The parts diagrams dont really mention which of the larger pieces goes on which side etc.
(https://bmwr65.org/smf/proxy.php?request=http%3A%2F%2Fjamesnewson.co.uk%2FSTUFF%2FR65%2FRearWheel_parts.JPG&hash=1ae7c76c3ac754dc8615c7792bf858f57f6da2ec)
And finally the bearings and I assume oil seals from the front wheels.
(https://bmwr65.org/smf/proxy.php?request=http%3A%2F%2Fjamesnewson.co.uk%2FSTUFF%2FR65%2FFrontWheelBearings.JPG&hash=1aa4ecadee52b0afec0d892517cb4519d1319e94)
If anyone could help me in identifying the order for reassembly or point me in the direction of any photos showing the same that would be great.
Thanks.
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1st pic I don't recognise the top 2 parts. 3rd item is the inner spacer.
2nd pic shows inner spacer wedding band and top hat spacers
3rd pic bearings and seals.
If you ignore the seal holder and turn around the left hand top hat spacer this picture from Duane Aushermans web site shows the order. You will also need to research and understand how to set bearing pre-load. Many of us here could describe that but it's a lot or words and Mike V has an excellent write up on wheel bearings if you can find it with a search.
(https://bmwr65.org/smf/proxy.php?request=http%3A%2F%2Fw6rec.com%2Fduane%2Fbmw%2Fwheel_bearing%2Fstack.jpg&hash=c27481617d8ed91237d55f5ea433fa8344440470)
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Thanks for the clarification Barry.
Im not sure I fully understand how to achieve the preload really so might have to try and difer to someone who has some knowledge. There is a wealth of sources when searched for on google and everyone has their wn ways of achieving it.
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The principle is simple enough. The outer races are held in the wheel at a fixed spacing and the inner races have an adjustable spacing by the combination of the inner spacer and wedding band. The objective is to provide a slight amount of preload on the bearings when the wheel nut is torqued up. Wedding band spacers are available in .002" increments to make adjustments.
Judging the correct preload is the tricky bit. There are two ways of going about it.
There is the shake the wheel test which involves torquing the wheel nut while feeling for when all play disappears.
The more scientific method is to torque up the wheel nut and then measure the bearing drag with a spring balance.
Either method will work just fine.
Here is just one of many previous threads on wheel bearings. http://www.bmwr65.org/cgi-bin/yabb2/YaBB.pl?num=1376853636/
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i am interested in this article also as i have done the exact same thing and forgot to note the spacers as to which side they go and to what wheel :o
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If you follow Duane Ausherman's diagram (with my caveats) it's hard to go wrong. About the only variable is which side of the inner spacer you fit the wedding band and or shims and that doesn't matter from a functional point of view. They were traditionally fitted on the left side at the factory so that's where I put them.
I would choose the pre-load setting method on this basis. If you understand exactly what's happening with the pre-load then in my opinion the shake the wheel method is perfectly fine. If you are not sure the axle torque method is going to be safer.