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Blanc Pain Automatic Hairspring And Balance

Tonychu

By Tonychu
in Watch Repairs Help & Advice

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Tonychu New Member

Tonychu

Posted
Posted

I took the blanc pain cal 1151( frederic Piguel ) movement out to clean but the hair spring come of from the balance .  I am confuse because it has 2 screws on the balance .  I want to put them back but I don't know how because this is the first time I seen this balance like this

I attach the pics of the hair spring and the balance plate

thanks

 

post-1739-0-32500500-1453124359_thumb.jp

post-1739-0-63113500-1453124374_thumb.jp

post-1739-0-85576600-1453124391_thumb.jp

Geo Distinguished Member

Geo

Posted
Posted

Welcome to the forum. Better close up pictures would have been better to let people see better detail.

The HS stud should go into the outer hole. I suspect the inner screw is for fine adjustment of the rate once you get it almost perfect by pushing and pulling the rate adjuster as required first. I may be wrong, as I have not worked on one of these movements.

Marc Distinguished Member

Marc

Posted
Posted

Google triovis regulator.

It's a precision regulator adjustment system used by IWC amongst others.

Geo is right,the hair spring stud goes in the outer hole, the inner screw is for adjustment.

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