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Headset Cartridge Bearing Removal

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  • November 29, 2017 at 5:06 pm #27887
    Jules Brown

    Hi,

    time to service the lower bearings in my headset. Problem is that I can’t seem to get the cartridge bearing out – it’s stuck fast. Any suggestions, please?

    The headset cup is custom titanium and is part of a straight 1 1/8″ set. When I assembled it all (around 3.5yrs ago) I’m sure I put grease everywhere and I’m sure I did plenty of test fittings and the cartridges both came out when I wanted. Now I have a problem.

    Thanks for any advice!

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  • November 29, 2017 at 9:36 pm #906933
    0
    CXR94Di2

    Wd40 to soak into mating
    Wd40 to soak into mating surface. Use gentle heat to expand headset. Tap away at inner race, use something metal. I have a solid long bar for knocking out bearings. This will likely damage the bearing. Replace with new and regrease well upon installation.

    November 29, 2017 at 7:32 pm #906931
    0
    Jules Brown

    Thanks mike. I already tried
    Thanks mike. I already tried to push the cartridge out (long screwdriver), but since I could only get at the inner race I didn’t use much force. The outer race is quite inaccessible. Picture of top cup attached here (photo of bottom was too dark, but the mechanics are the same).

    November 29, 2017 at 6:05 pm #906929
    0
    mike the bike

     

     

    What a coincidence, I’ve just done my headset bearings, although they popped out cleanly under the awesome power of my telekinetic abilities.

    But in the past I have resorted to a length of softish, half-inch diameter wooden dowel, poked into the headtube from the other end and given a few gentle taps.  If you intend to grease and reuse the bearings it’s important that the dowel pushes against the outer (larger) race and not the inner (smaller), otherwise the whole bearing may distort.

    Best of luck.

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