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I’m in the process of establishing a reassembly and lubrication plan for of what is basically my first automatic; a Vostok calibre 2416B, and I’ve come to the reversing wheels. As can be seen in the above pictures from the strip down, the teeth of the reversing wheels have blackened. It looks to me like they have must have been lubricated, or could it be that the oil that was once applied to the jewels has spread out over the teeth? So what do you think; should I lubricate the teeth, and if so what kind of lubrication do you think could be suitable? This movement is about 25 years old and has never been serviced. I know this for a fact as I know the original owner who bought it new. The watch is in great condition and was only worn for about three years when the strap broke and was then placed in a drawer. There it had been sitting until I got in my hands. It’s a somewhat rare Komandirskie, and for anyone interested here are some pictures of it and how it got into my hands.

I have found this on the web it may be of use : https://forums.watchuseek.com/f54/vostok-2416b-service-notes-240805.html

It would serve no purpose to oil the teeth of the wheels and it would spread around the movement, the oil residue you see could be because when it was assembled the posts for the reversing wheels where over oiled or the jewels in the reversing wheels and it has spread, You should oil the posts and one or two of the jewels in the reversing wheels.

That’s the trouble with Seiko watches. You are not supposed to open them. Tap the arbor with a box wood mallet to open, but be careful not to distort the barrel cap.

Thanks I've checked these out already but they seem to rely on you having a pre amp which I don't want to try and build. I want a mic that will work out the box if pos.

The minutest amount of changes made to a watch can make big differences to it's performance. I always check a watches performance before and after a service. It is always different after the service including the beat.

If the watch has dirt in the movement, dropping it can dislodge the dirt to a more important part of the movement, more likely in the train wheels. Sometimes a screw works loose or shears off into the movement. Anyhow, you need to dismantle the whole movement check for wear and broken parts and clean, oil and test it for time keeping. Back in the 70’s and 80’s Seiko recommended changing the barrel complete (I think every 5 or 7 years) today because many parts are obsolete, just remove the cap, arbor and spring and clean all in the cleaning machine.

Can you post a timegrapher (or equivalent app) picture? If you do not have one, you will need to get it.

Making a friction fit balance staff on a lathe is very tricky. As I was cutting a staff for a waltham, i took a little too much material off and the staff was not fitting completely snug. So, i decided to leave a little lip so i could river it on. Sent from my iPhone using Tapatalk Pro

Finishing the staff and riveting on the balanceUsing the Jacot, trimmed a pivot down and burnished themLower pivot was still to wide so put it back in the lathe to stone it down to size.Aligned the Hairspring and punched it on.It was complete and completed the install. Watch is currently running down with the new balance. Will completely disassemble and clean and oil and reassemble. DONE:) Sent from my iPhone using Tapatalk Pro

Started cutting the bottom half of the staffSized it against the original staffGraved it down to about 0.2 mm and then filed it down to size with a stone and oilI then burnished itThen i fitted the roller table to make sure the staff was the right size.I then fitted the staf on its own in the movement to make sure the length was right and the 0.12 staff pivots fit into the upper and lower jewel. It was a little long so I mounted the staff in the lathe and tool a little off the top pivot.I compared the two staffsI Then fit on the staff loosely and assembled the unit as a final check prior to staking on the staff.All done for now. Tomorrow I stake on the staff and roller table and test again. Sent from my iPhone using Tapatalk Pro

update. The planes are Herpa models

@matabog Wow.......that is a great 3D print result. When I saw you & Geo talking about this chronograph, I was seriously considering buying one. But what when ready? Where to put it / build it in?? I think you found a fantastic solution and my compliments to you and your friend While searching for the Mig 21, I stumbled over the Vostok watches. I was so impressed about all the technicalities / capabilities, that I bought yesterday my first Russian time piece; a new Vostok Amphibian "Radio Room"......I can't wait to have a look at the 31 jewel 2415 movement! Thanks to both of you for pointing me East !