Adjusting a Goldthwait regulator (Hamilton 926)

yellow_sub

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I feel silly asking this cause I'm sure I'm missing something super obvious, but can not figure out how to adjust this darn thing! I can back the screw off that is to the side (silver one in the pic, just to the right of the balance wheel) and can push the arm over but all it does is spring right back over. I searched here and elsewhere online but couldn't find anything specific to this type of regulator. Here is a picture of the watch to see what I'm talking about exactly. Thanks in advance for the help.
DSC00240.JPG
 

4thdimension

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The screw on the side of the balance cock is what you’re looking for. Glad you asked ! -Cort
 

4thdimension

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You may want to turn the balance cock over to check the function of the regulator before you go further. -Cort
 

musicguy

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Moved to watch repair

Rob
 

179

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Difficult to see from your pic., but to me it looks like the tip of the spring is under the piece it should apply pressure against, It should rest against the side of that piece.
 
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luvsthetick

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Turning the screw clockwise will move the regulator arm toward the fast mark and counterclockwise moves the arm toward the slow mark. If this doesn't do what you want to do then there is probably a problem under the balance cock.

Hope this helps.
 
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yellow_sub

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Thanks for the info everyone! There does seem to be an issue with the regulator. I back out the screw but it still stays pinned over to the one side. I can push it over but it just goes back into the position where it is in the picture. Unfortunately, disassembly of all that, especially this specific one, is more than I feel comfortable doing currently. I have had this one since early 2017 and haven't had it serviced yet so I guess it's time for that anyway.
 

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Rockford's early high grade movements by Greg Frauenhoff