Jump to content

Poljot 3133 Sturmanskie Chronograph Restoration Project

GeorgeClarkson
 Share

Recommended Posts

GeorgeClarkson Super WRT Addict

GeorgeClarkson

Posted
Posted

As many of you already know, I recently acquired a non running Poljot 3133 Sturmanskie Chronograph.

The seller stated the movement was not running and pictures showed a strange bent on the hairspring.

IMG_20170107_144347378.jpg

GeorgeClarkson Super WRT Addict

GeorgeClarkson

Posted
  • Author
Posted

It is obvious someone tried to adjust the balance wheel in an awkward way but the small eperson probably also put a couple of shims under the balance cock, causing the screw not to go all the way down.

IMG_20170107_144341192.jpg

GeorgeClarkson Super WRT Addict

GeorgeClarkson

Posted
  • Author
Posted

Apart the dirt specs and other things I failed to recognize on the dial, the hand look not too good to be honest, and so do some lume pips on the hour markers, which show even some small holes.

IMG_20170107_163808673.jpg

IMG_20170107_163805734.jpg

IMG_20170107_163830155.jpg

GeorgeClarkson Super WRT Addict

GeorgeClarkson

Posted
  • Author
Posted (edited)

Now it is time to show some pics... This is the complete disassembly procedure, or at least my way of doing it. I am posting the most important pictures here, to be able to reassemble the movement going backwards.

Let's tart with the case back, that features a retention ring. I have seen this in many Poljots...

Poljot_3133_Sturmanskie_Chronograph_001.jpg

Poljot_3133_Sturmanskie_Chronograph_006.jpg

Edited by GeorgeClarkson
GeorgeClarkson Super WRT Addict

GeorgeClarkson

Posted
  • Author
Posted

Then, I removed the hands and the dial. The dial itself was only pretty dirty, mainly from traces of paint coming from the hands (the chronograph seconds hand at that), which had become brittle.

Poljot_3133_Sturmanskie_Chronograph_143.jpg

GeorgeClarkson Super WRT Addict

GeorgeClarkson

Posted
  • Author
Posted

The keyless works was also easy and straightforward to remove. All the parts are now submerged in lighter fluid, getting ready for a cycle in the cleaning machine. I will then proceed to reassemble the movement, after cleaning the case. BTW, the case is stainless steel and has little to no scratches.

Poljot_3133_Sturmanskie_Chronograph_271.jpg

GeorgeClarkson Super WRT Addict

GeorgeClarkson

Posted
  • Author
Posted (edited)

After a bit more fiddling with the balance wheel, I discovered that the lower tip had broken off. This is presumably the reason why the balance wheel does not move freely even with the shims applied, and presents so much endshake.

In the attached image, the balance on the right comes from another Poljot 3133 chronograph I just received from Russia (more on that later) with intact pivots.

Poljot_3133_balance_wheel_001.jpg

Edited by GeorgeClarkson
GeorgeClarkson Super WRT Addict

GeorgeClarkson

Posted
  • Author
Posted

Takling the hairspring is another issue altogether. Comparing it with the "healthy" hairspring from the other Poljot 3133, you can clearly see how bad it was bent. And mind you also the "healthy" hairspring was slightly bent, having the end turn (how do you call that?) too curved outwards. I managed to straighten that one just fine, and you can see the result in the picture. I just hope I will be able to fix also the one belonging to the Sturmanskie...

Poljot_3133_balance_wheel_003.jpg

GeorgeClarkson Super WRT Addict

GeorgeClarkson

Posted
  • Author
Posted (edited)

Now the question is: should I try and repair the badly bent hairspring or just replace it with the healthier one?

Me being me, I will first try to fix the hairspring, and if I am not successful, I will replace it, while sourcing another one. Wish me luck!

Edited by GeorgeClarkson
frenchie Distinguished Member

frenchie

Posted
Posted

Yes, try to fix it, it's very good practice! Slow, and steady hands are the trick. Replacing the balance staff will also be good practice. Mark's video on the subject is excellent.

  • Like 1
Vich Distinguished Member

Vich

Posted
Posted

I don't know whether you have seen Marks bit on straightening hair springs and it may be that unlike myself you already possess the skill, but if you need it the vid is quite illuminating. Best of luck but I do feel you are going to win this one.
Cheers,
Vic

  • Like 1
GeorgeClarkson Super WRT Addict

GeorgeClarkson

Posted
  • Author
Posted

And here another small video, after putting everything back together. The Poljot 3133 Sturmanskie is working, still has some flaws, has not been regulated nor timed, but it's ticking...

 

Enjoy!

  • Like 2
 Share
Go to topic listing

  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • tonydagee
      Calendar work certina 25-651

      By tonydagee · Posted

      Hello all, just disassembling to service, but I can’t figure out the working of the calendar work…it’s not operational the jumper and spring are ok, but the operation of the driving wheel has me at a loss. I can’t see a cam to drive anything. Is something damaged or missing? Help please!
    • tIB
      Unusual Seiko dial damage

      By tIB · Posted

      Believe the relume (not a fan) was done a long time after the damage. 
    • Malocchio
      Unusual Seiko dial damage

      By Malocchio · Posted

      I can only think of some chemical reaction to reluming
    • nickelsilver
      A lathe with indexing that won't break the bank?

      By nickelsilver · Posted

      I have a little milling attachment for my WW lathe, but very rarely use it and not for wheel and pinion cutting. For that I use a small Sixis 101 milling machine. I normally do direct dividing, but sometimes have to do an odd count and use the universal index which also fits on the Sixis.   Back in the day when I didn't have a mill, I would cut gearing on my Schaublin 102. It has a universal dividing attachment which fits the back of the spindle. Both it and the one for the Sixis are 60:1 ratio, and with the set of 4  index plates I can do almost any division. When I've had to do a strange high count prime number, I print a disc with the needed division and just place the plunger on the dot. Any position error is reduced by a factor of 60 so still plenty accurate.   The machines are a mess in the pics as I'm in the process of making a batch of barrels for a wristwatch 🙃.   This is the Sixis. The head can also be placed vertically, as can the dividing spindle.   Dividing plates. The smaller ones fit another dividing spindle.   Universal divider for the Sixis. I put it together with parts from an odd Sixis spindle that takes w20 collets, like the Schaublin 102, and a dividing attachment from a Schaublin mill.     The dividing attachment for the 102. The gear fits in place of the handwheel at the back of the headstock.   And the little milling attachment for the WW lathe. I just set it on the slide rest to illustrate the size, you can see from the dust on it it really doesn't get used much. I think only when I change bearing in the head, to kiss the collet head seat (grinding wheel still in the milling attachment).
    • SidKop
      Opinions on Seiko's 4R and 6R movement quality from those more able to judge

      By SidKop · Posted

      I read a lot about the quality (or lack thereof) of Seiko's 4R, 6R, 8L  movements...or more specifically the lack of regulation from the factory. Especially when compared to similar priced manufactures using SW200's or ETA's. I thought I'd ask those more in the know, do the 4R's and 6R's deserve their bad reputation, is it fairly easy for someone with minimal skills (or better yet a trained watch mechanic) to dial in these movements to a more acceptable performance.    For background I spent more on a 1861 Speedy years ago, expecting that the advertised 0-15s/d  would probably perform more like 5-7s/d. In reality it's been closed to 2-4s/d. 
×
×
  • Create New...