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replacing bearings in a zipp disc
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I have a Zipp 840 disc that is a couple years old. The cartridge bearings are a little rough even after pulling the seals off them and adding grease. I looked up Dan's article on cartridge bearing replacement and seems straightforward, but I can't figure out how the axel comes out of the disc. Anyone replaced their bearings on their own? I assume they are user-servicable and that Zipp will send me replacements so that I don't have to ship the wheel to them and pay their labor? Any input?

Thanks

Sweet
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