Well, this is my first effort of a watch repair. I have been fascinated with watches, clocks and all kinds of mechanical things since a young age. I decided at this time that working on watches would be a great hobby/interest to take up in my later years. I have already spent some time learning to refurbish and repair fishing reels in the last few years. So here is my first repair attempt.
Interest in tinkering watches started when I dropped my Seiko SKX009KD diver to the tile floor in the bathroom. Was not too good an idea to put a watch on there with a towel thrown over it, pulled the towel and down comes the watch, face down on the tile floor. Needless to say, I picked it up and took a look, nothing seen. Then I shake it and hear a rattle. Not too good!
So I did some research on the 7S26C movements. Read a lot of information and watched a lot of videos. Thanks to all that makes this information available. So I purchased a cheap watch tool kit from Amazon. I had other watches that needed batteries and some strap work anyway. I knew the kit would not be 'pro' grade, but it was a nice kit with all the basic tools needed.
Back to the rattle, I figured the Oscillating Weight (OW) had become separated from the bearing. So I used the case back wrench in the kit and opened the back, and sure enough that was the problem. I looked on-line for a replacement OW but could not find any except one on Ebay for $35! So I decided, what the heck, I'll try to repair this one. So, here is what I did being a little mechanically inclined but never at this small a scale, I performed the following:
1) remove case back.
2) examine the OW, it was dislodged/loose from the bearing.
3) remove center OW bearing from center post.
4) place OW on a small anvil, then use a small pin punch from the kit as to carefully work the metal around the OW's hole as to make the bearing hole smaller.
6) After enough working with the punch, I took a smooth round stone and gently kept working the ID of the OW hole until it just would friction fit to the surface of the OW bearing.
7) carefully press fit the bearing into the OW, I knew too much pressure would ruin the small bearing races and ball bearings.
8) finalized fitting of the bearing to the OW by applying a very small amount of red Locktite thread locker using the end of a pin as an 'oiler'.
9) I then let the OW set for a day to cure the Locktite
10) install OW per alignment instructions in the 7S26C technical guide. At this time I also wound the mainspring up 8 turns to check the power, it ran for about 40 hours.
11) did not have any watch oil, so I used a very small amount of some 10W synthetic engine oil using a small pin as the oiler to lubricate the OW bearing ONLY.
It appears to be a successful repair for now, watch been running great and keeping good time for about 2 months. I'm sure something else might have gotten damaged during the fall, especially the balance assembly, but then again the watch is working fine for now. I might use this particular watch to dive deeper into the 7S26 movement at a later time. Kind of happy for now. Got 2 other watches running with new batteries, fitted some straps and having fun with my new hobby. Look forward to learning some more. Now to find a 'bag o watches at a flea market and get busy. I know I'm going to need more and quality tools down the road, that's OK with me.
Hi Fellow People,
Im reaching out as I’m currently learning all I can about watchmaking, and am working through the BHI distance learning technicians course, with my exam booked for May.
I will need to service a quartz watch as part of my practical exam, and am learning about watch lubrication.
A few months ago I found a great article that covered the technique for dipping and collecting the right amount of oil on the oiler, such as the speed and angle of the dip, however, I now can’t find it anywhere, no matter how much I search the internet
Does anyone have or can point me in the right direction of instructions specifically on oil collection on the oiler? As you will know there is lots on the actual oiling process but not the oil collection process.
Any help would be greatly appreciated.
Hello. I am considering buying a bottle of fixodrop and I found that there are many options regarding the quantity.
Since I am hobbyist watchmaker, I don't service a watch very often.(Couple of them in a month)
In this case, would it be okay to purchase the smallest amount of fixodrop(1ml)?
One more thing. Is there anything else I should get to apply the fixodrop to my pallet fork?
No registered users viewing this page.
I have been ‘tinkering’ with this ‘Aviation’ watch on and off for about 6 months. As ever, those beryllium copper hair springs are my nemesis. The problem with vintage watches is you never know if someone has fitted incorrect parts before you get to look at it. I just couldn’t get this watch to regulate - always running way too fast. It turned out the spring was too short so I had to sit tight and wait for a similar movement to come up on fleabay. Anyway, with the case polished, a new crystal fitted and sporting a brown leather bund from Germany, I’m rather pleased with this little Pin Pallet ticker. Sent from my iPhone using Tapatalk
We need to see the movement or for you to get the number off of it. If it has a black frame the number will be on the frame, otherwise it will be in tiny numbers on the plate. Most of them are from the 500 family and use a 371 battery. Very common battery for Ronda’s. Sent from my iPad using Tapatalk Pro