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Replacing cartridge bearings on Mavic Helium wheelset

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Replacing cartridge bearings on Mavic Helium wheelset

Old 07-20-09, 11:59 AM
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Replacing cartridge bearings on Mavic Helium wheelset

I have a Mavic Helium wheelset (probably about 5-8 years old) that's in great shape but has a lot of miles on it, and the bearings are starting to squeak even when adjusted as best as possible. The hubs look like these:

There's a weird plastic pin-spanner-like tool which I have to adjust bearing tension. If found this guide to replacing cartridge hub bearings online, requiring only a block of wood and a mallet in addition to common bike tools.

Has anyone done this on the Helium hub? Any complications? Any idea what size bearings they require? Thanks!
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