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Regulator boot fouling balance wheel

AshF

By AshF
in Watch Repairs Help & Advice

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AshF WRT Addict

AshF

Posted
Posted

Hey all,

I have an EB 1199 where the regulator boot is fouling the balance wheel in dial up position.  The balance pivots look good, certainly the end shake isn't excessive.

Note, this picture is in dial down position but circled in red is where it fouls.

IMG_20200811_232827.thumb.jpg.cc5f68b63f4f53b33ee80a1894a957da.jpg

I noticed during disassembly (how could you miss) that a previous watchmaker had shimmed the cock at some point.  I don't see how this would help?

IMG_20200723_225147.thumb.jpg.c2ab396108d2483c0699ece6655f760f.jpg

 

Any ideas?  Was the shim there to tilt the cock so that the regulator boot would be further away?  That sounds nasty.  This was a total non runner when I started.

 

Nucejoe Distinguished Member

Nucejoe

Posted
Posted

Are you sure the right regulator arm in fitted on the cock?  Doesn't look bent down.

Perhaps the wheel was restaffed with a shorter staff.

I am affraid previous watch destroyer chose the easy solution.

  • Like 1
oldhippy Distinguished Member

oldhippy

Posted
Posted

I would check that the staff is the correct one. Have you checked the jewels, is the balance cock level when screwed down, make sure it isn't lifting up. 

watchweasol Distinguished Member

watchweasol

Posted
Posted

Hi all the previous advice is sound, either the balance complete was changed of it had been re staffed at some point, Usually the balance cock is shimmed to increase the endshake. As old Hippy remarked check the balance cock is seated and parallel to the plate and the balance wheel rim is running flat.      

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