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Discussion Starter · #1 ·
Hi,

I'm mostly interested in Gruen watches and have recently taken the jump in to actually servicing the watches that I buy. In the first two of the three cleaning and oiling 'jobs' I've performed (can I call this an overhaul?), I got the stud back into the balance cock without too much fuss. Movement #3 went down hill and I ended damaging the staff. :roll:

The hair spring stud. It is a vexing little POS.

The way I'm doing this is that I place the balance complete and staff assembly on the top plate jewel and get the end of the staff set. I then place the balance cock on top and get the other end of the staff set into the jewel. Then using my tweezers I try to get the stud to line up with the hole and 'wiggle' it in. What are others doing? Should I try to attach the spring stud first then try to assemble the whole thing into the bottom plate?

Tips and suggestions are most welcome.
 

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Discussion Starter · #5 ·
Great! I appreciate the insights you guys are offering. One question: I was advised awhile ago, that I should not let the hair spring support the weight of the balance wheel. Apparently, Gruen Hair spring are soft. It was suggested to use tweezers to hold both the assembled balance cock and balance assembly together to place it right side up onto the movement. Well, the advise was on the removal of the assemble, so I had figured that it should be true in reverse too.

Another question: What is a CIMP?

for additional reading, I cross posted this at the Gruen Forum, where I have gotten at least one response.
 

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Discussion Starter · #7 ·
Thanks you.
Found what you are talking about here. Although the picture is gone, it is well described and making new tools is a fun part of this hobby. Especially if it is one that seems helpful on different levels.
 
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