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  1. #1
    Junior Member
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    Newbie: removing freehub body

    My 2004 Giant OCR 1 was getting a little "crunchy" so I'm doing a bolts-off overhaul. I'm having issues with my rear gear assembly...

    1) I removed my quick release axle. Easy.

    2) I used *this* to remove my 9-speed Shimano cassette without a chainwhip. Harder.



    3) I removed my dust guards and bearings. Easy.



    4) I want to flush the wheel with degreaser and re-grease everything. I need to remove the freehub body to get to the grooves where the hub bearings sit. The otherwise helpful Park Tools website says that I need to do *this* with a 10mm hex wrench.



    5) I have a big 10mm hex wrench; it doesn't work. There does look to be some sort of vaguely star shaped socket inside the wheel. Perhaps it's an 11mm or 12mm wrench. Perhaps it's a custom Shimano too.




    What tool do I need to get this *&%^# freehub body off?

  2. #2
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  3. #3
    Member
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    My freehub body is removed with a 12mm hex key (Allen Key).
    I don't know who the manufacturer is, as Shimano use a 10mm key.

    Regards,
    Roger

  4. #4
    Senior Member
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    Your OCR 1 should have Zero hubs, probably a 12mm hex

  5. #5
    Senior Member MudPie's Avatar
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    I'll add my Bontrager hubs needed an 11mm hex.

  6. #6
    Senior Member BCRider's Avatar
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    It LOOKS like it's just a 12 point hollow allen bolt. If this is the case then a 6 sided hex wrench will fit. You just need to find the one that fits snuggly.
    Model airplanes are cool too!.....

  7. #7
    Senior Member
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    Pittsburgh, PA
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    All current Shimano hubs use a 10 mm hex to remove the freehub body. Other makes use a variety of other sizes as the above posters have noted.

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