Watch stops when upside-down

[billyfras]

Hey guys, as the topic states, I just got a watch with a 7753 that stops running whenever I flip it over to look at the movement. When I turn it back over I can tap or shake it and it starts running again. It also seems to be running awefully slow.

What could cause this?

[ceejay]

Sounds like a problem with the top pivot on the balance wheel. Assuming the movement isn't loose in the case or similar causing something to jam up?

[billyfras]

Thanks ceejay.

Ok so the movement does not stop immediately, but the balance wheel slows down dramatically and eventually comes to a halt.

There are other issues as well with the chronograph but I'm just curious about the movement stopping when upside down.

Any other theories?

[billyfras]

Anyone?

[billyfras]

And actually after further observation, it keeps pretty good time when it's kept upright.

[Grimlocktime]

This just happened to me on a Pam127 that had a loose dial. When I would flip it over the dial would lift slightly and put pressure on the seconds hand, stopping the movement.

Not sure if this is your problem, but worth a look.

[Tim]

You were told right. Look at your pivots on the balance wheel. Usually the one under the balance bridge gets crunched. Quick test is to check end shake on the balance wheel. It should be barely perceptible on the order of microns of movement. If your balance wheel is sloppy loose you have a broken pivot and need a new staff. Not an easy job to replace even with the proper tools.

And by the way Admin: Balance C o c k is not a profane word!!! <g>

Edited October 22, 2014 by Tim