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 Post subject: belt tensioner bearing
PostPosted: 22 May 2009 18:02 
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anyone know if the bearing on the belt tensioner is a harley only thing, and if not where i may avail myself of such an item? (and what i should be asking for - i are a bit of a dullard about these things!)

oh its a 2002 xb9r by the way

cheers

ben


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PostPosted: 22 May 2009 18:16 
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proff. patpending
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If you hang on a week, I am going to do a How To to change it.

I believe the bearing PN is 6203-2RS (get some SKF ones off EBay). The How To will say:

Loosen axle pinch bolt
Loosen axle
Remove tensioner fork (or Free Spirits Tensioner)
Remove tensioner wheel
Remove circlip with a pair of thin nosed pliers
Knock bearings out from non-circlip side
Knock small flat bladed screwdriver between the bearings (once out) to seperate them
Knock aluminium spacers out
Press aluminium spacers into new bearings
Press bearings back in
Put it all back together
Bob's your uncle and fanny's your aunt

Since I have not done it yet, I cannot confim everything and I cannot offer solutions to problems I have not found...

AND... Important for you... I understand the early 9s had one bearing in the pulleywheel, 5203-2RS, a double row bearing 17.5mm wide rather than the 12mm wide 6203s on the later models.

Comments to the above, by those who have aready done it, are welcome...

Cheers

Nick

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PostPosted: 22 May 2009 18:18 
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Not 100% but the bearing should have a number on it go to web site such as simply bearings ltd A uk supplier and you should be able to pop no in and get a match I did this for wheel bearings also they are dead cheap ie wheel bearing about £5.00 each


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PostPosted: 22 May 2009 21:13 
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ok stupid question number 2, ive found one by searching under 5203-2rs, and it has returned one on e-bay which says its a 3203/5203 DOUBLE ROW ANGULAR CONTACT BEARING 17X40X17.5, is this what i am looking for? (sorry for denseness!)

Thanks also for the how to, although i must admit im hoping it will be done for me, its going in for tyres and i figured while its there id ask them to go a bit further.

cheers
ben


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PostPosted: 22 May 2009 21:35 
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No it must be a 6203 2rs (6203 identifies the bearing size 2rs is two rubber seals )


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PostPosted: 22 May 2009 22:18 
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i was just going by what pash said above, that on early ones it was a double row 17.5 mm one, see now im confused! (its easily done)


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PostPosted: 23 May 2009 06:28 
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proff. patpending
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Have a look at the bearing number, you should be able to see it on the outer race, maybe with it in place in the wheel.

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PostPosted: 23 May 2009 07:33 
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+1 on 5203 for 2002/2003 models. I found this number on my old one also.

How to remove the retaining ring? This is not the standard type, looks more like a furled spring, but it's the same type for all tensioner wheels, regardles of model.

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PostPosted: 23 May 2009 23:09 
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proff. patpending
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ben wrote:
ok stupid question number 2, ive found one by searching under 5203-2rs, and it has returned one on e-bay which says its a 3203/5203 DOUBLE ROW ANGULAR CONTACT BEARING 17X40X17.5, is this what i am looking for? (sorry for denseness!)


6203 are 17 x 40 x 12
5203 are 17 x 40 x 17.5 (11/16")

SKF do not appear to do a 3203, however other manufacturers may and as long as it meets the size criteria, it will fit.

Whatever you buy, you want the double sealed variety, i.e. 2RS (SKF) or RSR (FAG)

Probably a good idea to get in touch with your local BSL Brammer

www.brammer.co.uk

and give them the dimensions, sealing etc. Ask for high speed ones, that thing will be rotating twice or three times the speed of your rear wheel.

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PostPosted: 24 May 2009 17:40 
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proff. patpending
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Fag number them as a 3203

http://tinyurl.com/fag3203

SKF number them as a 3203

http://tinyurl.com/skf3203

NTN number them as a 5203

http://tinyurl.com/ntn5203

Different folks, different strokes I guess ;)

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PostPosted: 24 May 2009 22:36 
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proff. patpending
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But that would be preset if it was a double row...

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PostPosted: 25 May 2009 22:45 
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proff. patpending
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I would have agreed with you if I did not know they were double row... ;)

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PostPosted: 30 May 2009 10:43 
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i thank you muchly for your help!


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PostPosted: 02 Jun 2009 22:00 
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proff. patpending
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Check out my How To...

viewtopic.php?f=17&t=819&p=8469#p8469

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PostPosted: 03 Jun 2009 07:17 
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pash wrote:
Fag number them as a 3203

http://tinyurl.com/fag3203

SKF number them as a 3203

http://tinyurl.com/skf3203

NTN number them as a 5203

http://tinyurl.com/ntn5203

Different folks, different strokes I guess ;)
Bearing numbering is not entirely 100% universal. Usually it is American designs that are out of step with the rest of the world. However, a reputable firm like BSL Brammer, for example, will have no problem telling you what you need if you quote the numbers.

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