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hokavan

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About hokavan

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    Watch Enthusiast
  1. Hi all, I found and bought another movement and replaced pallet, lower shock absorb jewel, lubricated then adjust the rate. Now the watch keeps about 38 hours will fully wound, rate is about 10-20 sec/day. I think its is acceptable for a nearly 60 years old movement. Thank you for your advice.
  2. Exactly. I'm looking for replacement on the bay...
  3. Thank you so much for your help. I will try it
  4. Hi all I'm servicing a Seikosha movement 17 jewels with caliber no. is 297 (I guess). It is a movement of vintage Seiko Champion watch. I have cleaned parts by ultrasonic; lubricated it. For the balance wheel shock assembly, I pegged the cap jewels (top and bottom), lubricated it with 9010 oil. After installing the balance wheel, it tick and tock. The upper and lower pivot of the BW is in the house of the shock assemblies. I also demagnitized the BW The problem is: the beat per hour is 21600 but as far as I know it should be 18000 (see photo). And it varies with different positions (see in the video). The rate is very bad with several hundreds seconds offset. So now I really need your help to fix this problem. The BW pivot is in the top shock assembly
  5. I wonder why dont you use the quartz movement tester? In similar case, I often test the movement itself before placing another good/sealed battery
  6. I'm going to clean all parts by ultrasonic. I haven't used oil on the pivots of pallet (both upper and lower). For the fine tooth combe, can you suggest alternative way because I dont have the comb
  7. Exactly. By somehow 2nd round of the hairspring is stuck in the curb pin of the regulator. So it made very strange rate as shown in the video. That's right way I've gone through. Finally I have removed the stuck hairspring from the curb pin. Now the problem is the balance wheel stops after a few beats. I've tried to clean the pallet, lever pivot, demagnetized the balance wheel. Nothing works. The balance wheel still stops after 1-2 beats. Still need some more advice the the case.
  8. Hi I’m trying to service a Seiko 7s26 and encountered a problem of strange rate as shown in the video http:// The rate should be 21600 but it varies from 12000 to 25200 and sometimes could not be detected. I’v check both pivots of balance wheel. They are in correct position. Please look into the video and give me advice Thanks Khoa
  9. The pallet fork moves with each rotation of the escape wheel. With photo can not judge if it is evenly lying or not. However you can check yourself by gently notch the fork from both directions. If it moves with escape wheel it seems to be okay. Remind that you should check the pivot of the pallet fork before tightening the screws. Sent from my iPad using Tapatalk
  10. AndyD from your photos, the movement is 0S20 not 0S60. the stem part number for both is 065-453.
  11. I don't have tools to remove the balance and install it on the old bridge. It could be the end- shake problems because if I pressed down the end of bridge it would run faster. I was looking for complete balance and bridge for ETA 2804 but was unable to find it. Could you please suggest any other way to fix it? Sent from my iPad using Tapatalk
  12. Yes you are right. The roller was not in right position. Sent from my iPad using Tapatalk
  13. Hi all, I broke the pivot of balance wheel on ETA 2804-2. I bought a generic complete balance wheel with bridge for ETA 2824-2 (http://www.ebay.com/itm/262234041099?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT) and tried to install it without any difficulty. There is only a difference between the new and old one is the shock assemblies (Incabloc vs Novodiac). In the photo below, the new one is the yeallow on the right hand side. My question are: - Is the complete balance wheel and bridge replaceable between those movements? - If Yes, after installed, the balance wheel has swung a little bit then stop. What is the reason? How to fix it? Thank you
  14. Hi Michael. Thank you for your helpful info. Definitely go to this market and museum also. Sound like heaven vinn Sent from my iPad using Tapatalk
  15. I 'm going to Geneva this month and wondering if there is tools shops especially for oiling over there. I'm looking for decent tools with reasonable price. Sharing information is highly appreciated. Thank you Khoa
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