My name is John, I am from Pretoria South Africa and work for the South African National Defence Force. I love watches of all kinds, from fine to cheapies. The wonder of the engineering that goes into a timepiece facinates me! Look forward to learning allot here.
Good day to all , I just joined yesterday to your post , a french chef expat living for the past 25 years in Indonesia . As far as I can remember I was always fascinated by watches or time pieces as some people like to call it . As probably many of you the souvenir of my first watch when I was 12 still feel like a dear memory . Unfortunately I am not very knowledgeable when it comes to mechanics and details . For many years I had numerous watches not really worth mentioning here , however lately I sold 9 of my collection to acquire a beautiful Parmigiani Fleurier XL Hebdomadaire , black dial ,steel case .
anyhow I am looking forward as much as my work will allows me.
if you read the technical document found above you'll notice on page 3 there is reference to another document? This is the document you need which explains how to fix the problem of the new weight becoming stuck if it's not properly adjusted. The only problem is you're not going to have the tools. But in the absence of lacking of the proper tools I'm extracting out the text that you will find interesting
"The new oscillating weight becomes stuck if it is not adjusted to the stud (pin). The new studs designed for the oscillating weight in the calibre 550 family are 0.698 to 0.701 mm in diameter."
The reamer is described as "Hard metal precision reamer Diameter 0,702 mm Reference 516 0072" then even if you can find the reamer you need the spindle that holds it in the staking set. So what we get out of this is the axle is over size and you need to open the hole to 0,702 mm. I would suggest not using the old parts just replace both of them. then if you're careful you can use watchweasol instructions with a brooch which will work just be careful it's easy to go too far.