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Posted

Hi,

I'm new to collecting and repairs, so this may seem like a daft question. I am in the process of reassembling a FHF908 movement (bought cheaply on ebay) and noticed that the impulse jewel was misaligned. I looked at a video online and thought I could perhaps do the alignment myself. However when I looked at it I was expecting to see a slot in the collet that I could use a screwdriver on. What I found was more like a circle with two flat edges, a bit like a rounded triangle (sorry I couldn't take  a picture with my phone as it doesn't give enough detail). Any ideas on how to adjust this?

Thanks

Posted

Thanks for your response. I have watched mark's video which was great for another watch but the collet on this balance looks different and doesn't have a slot for the screwdriver. I didn't know if there was another tool I had to use.

Posted

I don't know of a tool not when I worked. What I would do in your case would remove it off the balance and reset it, you can do this with tweezers and a staking tool, be very careful.

Posted

I've seen some Seiko hairsprings that have a circular type with corners cut off but never had to adjust them.

 

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