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  #1  
Old 9 May 2008
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Carrying spare bearings
I'll take 2 F650's to BA at the end of the year and am doing all the neccesary preperations now, which is always a good time to pick up spare parts as well. I've put heaps of grease on the SHB which incidentally were nearly dry, so if you haven't ever done this, might want to do that this weekend.

I got some spare ones just in case, together with wheel bearings.

Question is, how common are 6203 and 6204 bearings in SA? Depending on the answer here I might only take complete spares for 1 bike only.
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Old 9 May 2008
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Quote:
Originally Posted by tmotten View Post
I got some spare ones just in case, together with wheel bearings.

Question is, how common are 6203 and 6204 bearings in SA? Depending on the answer here I might only take complete spares for 1 bike only.
On the bearings themselves, there should be numbers...those numbers are the cross reference number. Check a good local bearing supply store and ask them if they carry those bearings...and why not?

This will tell you how hard it may be to get them at a bearing supply place in other parts of the world. SKF, Timken, tapered roller bearings will have the same exact same number-standard protocol in the bearing world...BUT the race may be another issue. You should replace the race when you replace the bearings on the steering head-otherwise notches in either the original race/bearing will impact the bearings...accelerating their failure.

Check the chaing gang website for more details...

Last year, I had to hunt down a pair of tapered roller bearings for an Iveco(made by Nachi)...real pain, I went to the Caterpillar, Komatsu, etc. dealers in Ulaan Baatur among the many places I tried...but no luck...lesson learned.
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Old 9 May 2008
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I don't know what year model your bike is. If it's like the US '05 and up models, know that BMW used a different size SHB than previous years, and they're only made by one Japanese company.
This is one of the odd experiences I've had where parts were cheaper from a BMW dealer than from a bearing house.
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  #4  
Old 9 May 2008
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Yes, those are the numbers!
MotoEdde,

Yes those are the numbers for single row roller bearings. YES, they are available at 2 or 3 places at every town over 20,000 pax. The only thing missing from your numbers are the zz or ss meaning double shield (z = metal) or double seal (s = rubber) after the number.

Check your wheels every night and change the bearing at the slightest wear (and ALWAYS after an accident!), and you will never get caught out without bearings. No need to carry those types with you..
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Old 9 May 2008
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I'm gonna respectfully disagree - crumbling bearings are the F650's weakest spots as the oil in the frame cooks the head race grease, and just because a mountain town sometimes stocks replacements, there are no guarantees. I had to replace front, rear and headraces within 16,000 miles on my 2003 Dakar, and that wasn't unusual. I'd say carry them.

Suerte, Dan
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Old 9 May 2008
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Originally Posted by Dan 23 View Post
I'm gonna respectfully disagree - crumbling bearings are the F650's weakest spots as the oil in the frame cooks the head race grease, and just because a mountain town sometimes stocks replacements, there are no guarantees. I had to replace front, rear and headraces within 16,000 miles on my 2003 Dakar, and that wasn't unusual. I'd say carry them.

Suerte, Dan
Dan maybe right...What grease did you put in there?

High temperarture lithium based grease, or something with a bit of moly mixed in would help possibly...

Also, another thing to consider is torquing the the nut on your steering head twice...the first time enough to seat them, second time...the final adjustment.

Also, do your steering head bearings come with dust covers? IF so re-order them with your bearings as the originals will get thrashed during removal.

More info is below as you've already tapped their forum yesterday...
Steering Head Bearing Replacement FAQ
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Old 9 May 2008
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I remember those bearing numbers from when i worked in motorcycle spare parts >10yrs ago. 6203, 6204 and 6205 would be the most common wheel bearings for a dirt bike of all Jap brands and KTM and Husqvarna. Although the 640ADV has 6096 in the front because of the oversize axle to cope with twin disc. So you can find the former types easily in Sth Am, as Toby said.

Also, it may just have been because I had a firmer spring in my F650GSD or rode it like a dirt bike sometimes (F650s are not IMO), but I would wear out or even crush the suspension linkage bearings about every 15,000km.
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Old 10 May 2008
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Quote:
Originally Posted by Dan 23 View Post
I'm gonna respectfully disagree - crumbling bearings are the F650's weakest spots as the oil in the frame cooks the head race grease, and just because a mountain town sometimes stocks replacements, there are no guarantees. I had to replace front, rear and headraces within 16,000 miles on my 2003 Dakar, and that wasn't unusual. I'd say carry them.

Suerte, Dan
There is no oil in the frame of the GS I thought? I'll have to agree on carrying SHB's.

Quote:
Originally Posted by Lone Rider View Post
I don't know what year model your bike is. If it's like the US '05 and up models, know that BMW used a different size SHB than previous years, and they're only made by one Japanese company.
This is one of the odd experiences I've had where parts were cheaper from a BMW dealer than from a bearing house.
07 Dakar. That's news to me. Is that in the Chain Gang FAQ?

Quote:
Originally Posted by Simon D View Post
6203, 6204 and 6205 would be the most common wheel bearings for a dirt bike of all Jap brands and KTM and Husqvarna. So you can find the former types easily in Sth Am, as Toby said.

Also, it may just have been because I had a firmer spring in my F650GSD or rode it like a dirt bike sometimes (F650s are not IMO), but I would wear out or even crush the suspension linkage bearings about every 15,000km.
That's good news. Cheers for that. I'll just carry one set than and replace the spares in the road.

There are a lot of bearings in the linkage. Not keen on taking all of those. Are they not easily available?
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Old 10 May 2008
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Originally Posted by tmotten View Post
...07 Dakar. That's news to me. Is that in the Chain Gang FAQ?
.....
Not when I changed them last year on my girfriend's '05 F650 - a different size, and I went to one of the largest bearing distributors in Atlanta (where and when her motor sucked hairy, sweaty goat balls) with them having access to all manufacturers. IIRC, the Jap manufacturer was 'NTN' or something similar...

Again, hers is a US F650, which may very well be different than those in other countries.
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Old 10 May 2008
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There are a lot of bearings in the linkage. Not keen on taking all of those. Are they not easily available?[/QUOTE]

There are only 2 types from memory, and they`re small, but i`d bet that you could get them from a large bearing store in SA or order them if need be. I`ve not heard of anyone else having a problem with them(?), so i`d say just check them for movement every once in a while, and if you could obtain the bearing numbers from say chaingang.com then you could order ahead if there a was a lot of movement. I don`t remember the numbers or have them recorded with me as i`m on a KTM currently. Suerte
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