Jump to content

Help - Yema LaJour Superman Need Part


Recommended Posts

I recently purchased this 1960's Yema LeJour Superman and it looks & runs great. I realized later that the winding stem isn't original, doesn't screw into the case.

I took it to my local watch repair guy and he isn't able to find a replacement stem in online replacement shops or ebay.

Case Reference # 147433, ETA 2452

I'm also wondering if the original crown was marked "Y."

I love to buy just a winding stem, but would be willing to have it professionally serviced if I knew they had an original winding stem/crown replacement.

Any ideas - suggestions???

 

JoeBirmingham (Birmingham, AL USA)

Yema Superman 4.jpg

Yema Superman 2.JPG

Yema Superman 3.JPG

Yema Superman 1.JPG

Edited by JoeBirmingham
Misspelling
Link to comment
Share on other sites

Hi JoeBirmingham,

I believe what you should be referring to are the crown and the pendant tube. The stem does not form part of the screw-down function.

That crown looks very much like those used on Monnin cases. These crowns were made by a different firm (either BFG or MF Co.).

These crowns screw into a thread cut within the pendant tube. When they fail to screw down, it can be either the pemdant  tube thread or the corresponding thread inside the crown.

To replace it, you can buy the crown and matching pendant tube from Cousins UK. You need to know the stem thread size (like 0.9mm or 1.0mm) and the crown diameter. You may be able to simply swap the crown and keep the pendant tube as-is. Otherwise, the pendant tube requires press-fitting.

Edited by rodabod
  • Like 1
  • Thanks 1
Link to comment
Share on other sites



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Rich, this one seems rather regular movement to me. Yes, what You describe exists, but I doubt that the one on the picture is something similar.
    • @Neverenoughwatches Many thanks for your remarks. As I wrote earlier, I was a bit reluctant to disassemble this movement, and you gave me further motives to be careful. I'll just remove it from its case so as to clean it a little.
    • I am not sure for the terms in english, but if I directly translate from Bulgarian or Russian, there are 'magnetic soft' and 'magnetic hard' magnetic materials. The first group will not get magnetised, thow they will be attracted by magnets. The soft iron for example. The second group, like hardened steel, will get magnetised. So non magnetic hairspring aloys belong to the first group.
    • Looks like it is only dirt. If rust, then this means the strenght of the spring is reduced in places with rust, so the spring is damaged and useless. Only light surface rust, which is rather residual from other places activity of rust can be cleaned, and no chemicals that can etch the metals of the spring aloy should be used Be aware that this usually happens when the dial/hands have radium lume! One of the pivot looks little bent. Not that much to prevent the movement from working, but may be amplitude will be a little bit smaller when this pivot down, resing on the cap stone. Bent pivots always means the balance is out of poise, but it depends on the severity of the bent. Yes it can be straightened, but at this point I will advice to leave it as is and check how the movement performs.
    • Hello, I'm after some help on getting a functional tool for removing and replacing case tubes, the friction fit type not the threaded type. I have previously owned two Chinese Ali Express tools, which worked, but in each case after using on a watch case with an angle the watch had to be manually held perpendicular and when this angle was not perfectly aligned the pusher pin inevitably received a slight side load and the tool body was damaged. Due to the fact that the hole which holds the pusher pin is so close to the end of the block and the material wall is so thin: The result was that the hard pusher pin stretched and deformed the hole and the pusher pin was then slack and no longer perpendicular, and eventually the material split altogether. After I looked at the tool I realised that the block the hole was machined into was aluminum, this coupled with the extremely thin wall made this hole very weak and prone to the deformation and damage I had experienced. I looked to another reputable supplier (see below) who advertised their tool as "all steel" and I even contacted their customer support who confirmed that the block in question was made of steel. I was very disappointed yesterday when it arrived and found that it was in fact aluminum and not steel as promised. I could tell by the feel of the material (weight) and confirmed with a magnet which would not 'stick' and have since requested a return/refund. Assuming the return/refund goes smoothly, I am still left with my original problem of not having a tube pusher tool - does anyone have any recommendation for a tool which will work and will also stand the test of time?
×
×
  • Create New...