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Girard-Perregaux Stops When Still

WillFly

By WillFly
in Watch Repairs Help & Advice

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WillFly Distinguished Member

WillFly

Posted
Posted

My mid 1960s cal.23 Girard-Perregaux is annoying me. It keeps excellent time when on the wrist. The movement's not too dry and it's not over-oiled.

 

When it's lying flat, it stops. A gentle movement starts it immediately, then it goes for a while then stops - no particular regular interval, just when it feels like it.

 

Any discernable cause?  Advice and comment welcomed.

 

Will

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Geo Distinguished Member

Geo

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Posted (edited)

Maybe there is still some caked oil somewhere that was not properly removed when serviced?

My money is on this, it caught me out when I first started watch repair.

Edited by Geo
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CKelly WRT Addict

CKelly

Posted
Posted

Hi,

   I've been sitting here working on battery power and generator due to power outage and high winds. Anyway I saw this post and started thinking a bit. One thing that comes to mind is cap stone on balance cock may be a bit dry. That pivot point may also be a bit gummy still which would show as an issue you described. Another odd possibility is that there is, if I remember properly, a center sweep pinion that is held in place by a tension spring. This spring might be allowing the center sweep pinion to drop a bit causing it to bind just a bit which would stop the watch and this could show up when watch was in face up position. That seems to be a stretch but I have seen a similar issue in the past.

Charles K

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