The anatomy of a Vostok
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  1. #1
    Member marc_wl's Avatar
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    The anatomy of a Vostok

    Vostok watches are very particular. Komandirskie or Amphibia series, they share some very specific features that are sometine surprizing for the newbies. They are very rugged, inexpensive, with a design directly inherited from the late 60's

    The screwing crown is for instance very surprizing . Who did not believe that the crown was broken at your firt manipulation? Both Amphibia and Komansdirkie absolutely required to have their crown screed down to be water resistant. Most of the time the other brands adopted a toric gasket on a slick tube and the screw down is just and additional protection. Why don't we see this in details?

    Our guinea pig today is the Komandirskie version of the "blue diver" (circa 2004 automatic caliber Vostok 2416b 32 jewels). Something wrong happened in the dato mecanism and I need the mesh bracelet to put it on my Amphibia version.



    The main difference compared to Amphibia versions is the brass chrome-plated case instead of the all stainless steel, a ca 5atm resistance instead of 20atm, a thiner acrylic crystal, but the rest is quite similar. Straight hand and no lumed spot on the second hand.

    The mesh bracelet waspurchased from my local watchmaker. It has a safely buckle.



    Someone, a few time ago on this forum asked how to remove the rotating bezel. Its a good occasion to see how to proceed. First, protect the case with a piece of strong paper. Then lift off smoothly the bezel using a Bergeon-like knife.



    It comes effortless and it can be snapped on back easily as well



    The bezel is in brass and chrome-plated too. A bulged wire give the necessarily bezel friction :




    Well. Now we can open the case. A case holder is required.



    A good care is to put on a protective film on the case back to prevent any damage with opening tool that need to be adapted to the screwed ring size.



    As soon as the ring is unbloked, one can continue using a safe wood pick to fully unscrew the compressing ring that can be removed :





    Then we lift the case back using the small finger and remove it





    Here is the movement and the Vostok rotor:



    For the demo purpose I remove the gasket.







    One can now extract the stem+crown. Be carefull, this screw is not the stem-liberating one but just a bridge screw!



    There a specific pusher near the click that more handy that a screw



    Here the stem tube with its outer thread.



    And here is now the famous upsetting crown!



    If the crown is not pulled out, it is fully free to move, but when you screw it down you don't turn the stem anymore! Very clever! Now you can see the inner gasket and understand that it should be screwed down to protect the watch!!

    We now remove the rotor to be more comfortable in the following steps



    After putting the screw in a safe place, we can lift off the rotor



    Well, we can now uncase the movement just by unscrewing the 2 casing screws on the nylon ring.



    The movement is free. Be carefull not to dammage the dail and the hands attached.



    We deposit it on another caliber holder to proceed to the hand lift :



    We should first get a minimum alignment to lift them all at the same time. One protects the dial with paper and a sharp V:



    We take the hour hand with the lifter an push gently to lift the whole



    It's done!



    That's the Deep Blue !



    We can now remove the dail. 2 small screws block the dial feet on the periphery



    It comes effortless and the dato mechanism appears :



    A wire spring in the small window should be carefully removed before unscrewing the plate.



    So what's going wrong in this dato??



    Ha! OK. I see I broke 2 teeth (orange arrow) of the hour wheel (blue arrow). I remember that something went hard while changing the time and I forced a bit (never do this!).



    So that the hour hand stopped at 1 am to 1 pm while the other continued their run!!

    I've asked to Peter Maier if I could get a new one with my Ministry and Neptune order. Hope so.. While waiting, I keep the whole away from the dust.



    What is more magnificient that any running caliber outside its case !

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    Re: The anatomy of a Vostok

    you really went all out on this one marc! great job, classic post!

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    Re: The anatomy of a Vostok

    As usual, great post and pictures Marc. Hope you can get a new wheel. If not you should not have much trouble getting a used one.

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    Re: The anatomy of a Vostok

    Wonderful post Marc!

    In fact I was just wondering how to remove the dial from a BOCTOK!

    So the new BOCTOK use plastic spacer rings? A shame!

    I don't think this happened in Soviet times!

    Thanks for a very informative post

    OKEAH

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    NEG
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    Re: The anatomy of a Vostok

    Wonderful Photo's as always Marc And great write up.

    One small point, you should have wrote "The main difference compared to Amphibia versions is...."

    The way it reads at the moment is the Amphibia versions have the chrome plated brass cases etc etc.
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    Exclamation Nice but...

    Nice work Marc but you do one thing wrong. It's clever to put paper before using removal tool. Dial won't be ruined but don't remove all hands at once! Remove them always one after another.
    just above sea level

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    Lightbulb That's better!

    Quote Originally Posted by OKEAH View Post
    Wonderful post Marc!

    In fact I was just wondering how to remove the dial from a BOCTOK!

    So the new BOCTOK use plastic spacer rings? A shame!

    I don't think this happened in Soviet times!

    Thanks for a very informative post

    OKEAH
    They may have plastic ring nowadays but that's better. Plastic absorbs shocks better, and protects (sort of) from magnetic fields too. So watch becomes at least shockproofer than it was!
    Also I think only Komandirskies have plastic rings (smaller diameter than those Amphibia use).
    just above sea level

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    NEG
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    Re: The anatomy of a Vostok

    Marc, I think I may have a spare hour wheel....I'll check tomorrow...
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    Re: The anatomy of a Vostok

    Quote Originally Posted by NEG View Post
    Marc, I think I may have a spare hour wheel....I'll check tomorrow...
    Thanks for the correction NEG! Would be nice to get one wheel for sure.

    Kind regards,

    Marc
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    Re: The anatomy of a Vostok

    Excellent post!

    One tip because I made this mistake once: make careful note of the time on the watch before removing the hands. Otherwise the hour hand won't be synchronized with the date wheel and the date will change in the middle of the day

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