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  1. #1
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    Coaster hub help (Mark IV, Schwinn Approved)

    Does anyone know how to disassemble a Mark IV coaster hub? I've gone through the Sturmey-Archer and Bendix sites online and don't find a match to my hub. A lot of them appear to be approached from the drive-side, usually by removing a circlip. My hub doesn't have a circlip that I can find. Some other hubs I saw have a brake arm on the left-hand side that lifts off after removing locknuts, etc. The brake arm on my hub won't budge.

    On my hub, there is a thick ring on the drive-side that has a single notch. I was thinking maybe a spanner of some sort may be needed to wrench it off.

    But, if anyone has experience with this hub, I'd appreciate hearing from you!

    Note: I cross-posted this in C&W.

  2. #2
    Senior Member bikeman715's Avatar
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    try out Sheldon brown's site , i believes you will find what you need there about sturmey-archer hubs ,which your is, good luck.

  3. #3
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    Thanks, Bikeman. I checked Sheldon's site over the weekend and learned a lot (who doesn't?). And you're right, the Mark IV is a Sturmey Archer. It just seems to differ a little bit from the exploded diagrams I saw. Another poster on C&V said that the drive-side notched ring is a lockring. So, I'm going to give that a shot soon.

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