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Thread: Help to ID a chrono part

  1. #1
    Craftsman
    Join Date
    Jan 2012
    Location
    West of Scotland
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    554

    Help to ID a chrono part

    Iím coaxing an EB8420/8423 chrono back to life at the moment.

    Itís now just missing one of the wheels which Iím not entirely sure of its name so I can source a replacement.

    Itís shown in the pic below:


    Iíve got a spec sheet for an EB8423 from here:
    https://81dcd48f-a-e15ee250-s-sites....edirects=0&d=1

    I *think* itís part no. 8060 which is the driving wheel but it might be 8061 the intermediate one.

    Any help appreciated.
    Last edited by IanM; 24th July 2019 at 19:58.

  2. #2
    Craftsman
    Join Date
    Oct 2016
    Location
    South East
    Posts
    363
    Check the side profile of the part you have as one has a pinion and one doesn't. I would suspect it is the one with pinion you are missing based on the picture of the movement.

  3. #3
    Master Thewatchbloke's Avatar
    Join Date
    Dec 2010
    Location
    Berkshire UK
    Posts
    6,358
    It's the intermediate driving wheel.

  4. #4
    Craftsman
    Join Date
    Jan 2012
    Location
    West of Scotland
    Posts
    554
    Thanks. There is a shaft for it to sit on.

    All the movement pictures I can find have the runner spring in place which obscures it.

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