should I replace the main spring barrel and cap?

[dave@caffray]

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

[Dell]

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.

[dave@caffray]

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

[Author]

Posts