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mikepilk

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mikepilk last won the day on March 30 2020

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About mikepilk

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  1. I've serviced a couple of Seiko automatics recently - and as I don't have the Seiko lubricants, I was looking up what others were using. I was surprised to find people using 8200 on the barrel walls and not breaking grease.
  2. So, clean and lubricate with a thin layer of 8200 Interesting to see that @nickelsilver said that he was "shown in school to put 5 little drops of heavy oil on the coiled spring in the barrel and 3 to five in the open space in the barrel;". I did wonder about that - some do and some don't !
  3. Here's pic of a scrap 7S26 movement I have, to show you the spring from the stud to the regulator.
  4. As @jdm says, it looks like it is rubbing on the balance arm - possibly near the red arrow. The spring is sloping down from the stud to the regulator, and It looks like there is a kink just to the right of the regulator. Trying to fix that is not easy for the beginner (by "not easy" , I mean VERY difficult for the beginner). But if you are getting a new movement or balance, use it to practice on. Fiddling with hairsprings is a fine art, which many (probably most) never become competent at. I've practiced and can sort out simple defects, but they still give me nightmares - espec
  5. Thanks @JohnR725, I'll try to find a copy. I do have Fried's 'The Watch Repairer's Manual', which is my standard reference.
  6. Interesting stuff @JohnR725 I haven't before seen instructions on working on a hairspring still in the balance. Which book is this in ?
  7. From the size of the movement, I don't know if you can get undercutters that small?
  8. Replacement balances are quite cheap for these movements. Looks like there may be a bend at the red circle. I'm not sure you can take the hairspring off these, but you could try and correct it in situ : hold the spring with tweezers at the red circle, and push down at the blue arrow. You need good magnification and steady hands ! If there's a twist, it's a bit more difficult. A close-up picture from above the red circle would show that.
  9. I've been trying to find a slotting file to cut the screw heads, but haven't found one fine enough. Nor have I found any under cutters. So I ended up using the balance screw cutters. As long as you don't cut too much, it looks OK (usually it's a very small amount to remove). I just hold it with a finger against a staking block, without taking the hairspring off - which is how I damaged the Omega hairspring . If you have one of the balance holders I mentioned above - it would be easy. Depending on the size of the balance, you might be able to use a staking set - press down on one of
  10. I have some of those balance screw cutters. You need some way of holding the balance securely, without damaging it, as you have to press quite hard to cut. Ideally you would take the hairspring off, but then you have to cut the screws, put the hairspring/balance back together and check the timing. Then strip it all down and repeat as necessary. Each time risking damage to the hairspring.
  11. I agree entirely with @jdm. Don't touch it until you are comfortable cleaning/lubricating a similar movement and getting it running as it should. Then do it two more times.
  12. You are right about automatics - the end bit of the bridle is very tricky, it won't wind straight in. I had to use tweezers to pull the end of the bridle in, before I could continue winding by hand. I did manage your technique - form a small loop, then drop it in, rather than pushing it continuously in. I practiced on an old spring, and it was pretty flat when I took it out. I would rather have used winders, but the barrel on Seiko 7002/7S26 is an odd size. I only have 9.5 and 10.6 mm winders. The 9.5 is too tight for the spring, and the 10.6 mm a touch too big for the barrel !
  13. Hi @nickelsilver. Would you please explain the correct way to hand wind a mainspring? From comments above, I believe quite a few people would be interested. I've recently been working on a couple of Seiko automatics which have been driving me crazy getting the springs in. As they are left handed, I first have to use a smaller winder, and transfer to a washer. Unfortunately my next smaller winder is a bit too small, hence a broken the bridle. Then, when trying to fit it to the washer it pinged out, then .... etc etc
  14. I don't understand the question - what do you mean by "lateral bearing surfaces"? It may not look pretty, but as long as the bearing surfaces are jewelled, does it matter ? Can you give an example (photo) of what surfaces you think would benefit from polishing?
  15. Go carefully, I recently trashed the hairspring on an Omega 455 (movement 16mm dia) whilst trying to add timing washers. I've never seen such small timing screws. My smallest washers were much too big, so I was trying to file them flat when disaster struck. This is where a balance holder becomes really useful : https://www.watchrepairtalk.com/topic/17417-balance-tack/?do=findComment&comment=149926
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