should I replace the main spring barrel and cap?

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  • #66115
    [email protected]
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    I overhauled a Seth Thomas clock A400-000, 5610. the clock is running and keeping good time, but it just stops after 4-5-6 days. If I start it 2 or 3 times it runs again. after further inspection, I think there is too much play between the arbor and the main spring barrel, mostly on the cap. how much is allowable and where can I get a replacement. I think Hermle makes some for Seth Thomas but I can’t find a cross reference to determine what I can use for a replacement. 8E is marked on the cap, specks are 8.44mm shaft, 66 teeth, 40.54mm barrel diameter, 44.57mm barrel teeth diameter, 22.87mm deep, 39.15mm cap diameter.

    Thanks for any guidance,

    Dave

    #66116
    Dell
    Participant
    • Topics Started: 3
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    Hi Dave

    I would the best bet would be to bush the barrel if it’s a normal barrel, not knowing the clock I don’t know what it looks like , I have bushed barrels before by hand.

    you need a bit of play barrel to arbor and you also need end shake.

    #66117
    [email protected]
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    • Topics Started: 7
    • Total Posts: 9

    Thanks Dell, I checked Time Savers and they don’t have bushings large enough to do that, the sleeve is 8.5mm OD. And the sleeve has a grove in it from the cap .5mm deep and they don’t have a sleeve replacement. where do I look for parts to fix this?

    Dave

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[email protected]should I replace the main spring barrel and cap?