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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Transmission shift drum bearing
Post Info TOPIC: Transmission shift drum bearing
mossproof


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Transmission shift drum bearing
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I have a shift drum bearing that is badly contaminated with aluminium swarf. Anyone know how to change it? How does the star wheel come off the end to pull the bearing off?

I can't see it mentioned in my manual at all! 



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TTRfan


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I see what you mean Simon. It looks like the bearing is fitted and then the "star" welded on in which case it would get messy grinding off the weld, cleanin/replacing the bearing and welding the start back on no

 

Star wheel.jpg



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mossproof


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Parts fiche suggests it is not replaceable - whole drum only. Luckily Steve has a used one with a good bearing. I will investigate further with the scrap one later... The star has to be orientated exactly or changing gear smoothly might not happen! Wonder if there is some sort of spline?

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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Transmission shift drum bearing


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