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Assembled and running well, I'm asking after the fact. I'm waiting on a new oscillating weight as this one was worn (they have a reputation for it apparently, no bearings). So I've been winding it by hand, but meeting quite a bit of resistance at the end, more than I think an automatic weight will overcome. It's not quite as sudden as a manual mechanism, but there's very little in it, certainly enough that I would be concerned about breaking something if I continued. -
Remove the cannon pinion from the dial side first. The "clip" you describe is sort of a metal tab some American companies designed their cannon pinions with in order to make it easier to tighten friction. If that is the problem, the solution is as simple as gently squeezing the tab with tweezers to bend it ever so slightly inward, while supporting the inside of the cannon pinion if possible (it may be harder to support inside since it does not have an open tip as a hollow tube) The cannon pinion should just pull straight off of the arbor on the dial side if you pull it straight up with tweezers. There's no jewel in danger of breaking and the arbor is thick so there isn't much risk of breaking the arbor. But when you are describing that the center wheel's pinion is not turning the arbor, is the pinion firmly attached to the center wheel? If you remove the center wheel and hold onto the rim of the wheel, does the pinion turn independently of the rest of the wheel? It should not. I'm not sure if this was the case on older Waltham, but the pinion may be threaded onto the center wheel arbor and they are often loose. This was a safety mechanism for a broken mainspring and may just need to be tightened back down. I can't remember for sure, but these might be a reverse (left) thread instead of normal right. And does the entire arbor turn independently of the wheel? Also should not. -
You may get some extra friction on the barrel lid so may not slip as easy but I wouldn't think it's a problem. My suggestion would be to finish the assembly and see how it runs. -
I have a Waltham key-wound pocket watch, small seconds: 20640806 on base plate & 640 80 6 on top plate. The pinion shown in the photo of the rear of the top plate - driven by the barrel - is loose & doesn't turn the main (first ?) wheel on the same arbour. The other photo shows the arbour on the dial side which appears to have a clip of some sort around it. I'd be grateful for advice as to how to proceed to rectify this problem. -
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