Jump to content

Parennin x 171

Gaus

By Gaus
in Watch Repairs Help & Advice

 Share

Recommended Posts

Gaus WRT Addict

Gaus

Posted
Posted

Good afternoon fellow forummembers,

I have serviced a Parennin x171 movement. I have replaced the mainpspring. The watch runs nice, but it looses time between 11:00 en 12:00 hours. What can be wrong? I appreciate your suggestions. With kind regards, Hans

WatchMaker Super WRT Addict

WatchMaker

Posted
Posted

Does this happen once or twice a day ?

If once a day then it's probably something to do with the date changing mech not quite running smoothly and the 'drag' causing an issue.

If twice a day then put the crown in the time-change position and take a close look at the hour hand as your move it slowly around the dial ... does it sweep cleanly with an equal distance between it and the dial at all times? You just want to ensure that the dial is seated correctly and the hour hand was put back on level. If this checks out then be certain there isn't some some contaminate somewhere e.g. some fluff or dirt in between a tooth on the hour wheel.

  • Like 1
Gaus WRT Addict

Gaus

Posted
  • Author
Posted

Hello watchmaker, I guess you're right with a problem with the date changing. Manually it looks oké. What can cause the "drag?".

WatchMaker Super WRT Addict

WatchMaker

Posted
Posted

I'm not familiar with the Parennin specifically, and it's difficult to find much info on the web about this movement, so I'll need to talk generally...

A date change mech will normally consist of i) a wheel (or relevant mech) that pushes the date ring forward at midnight and ii) a date jumper that ensures that the date ring clicks forward neatly one day.

The date jumper is just a simple lever with a smooth curved end held lightly in position with a spring. When the date ring is pushed forward it slides over the next notch in the date ring and relocates. However if the original date jumper spring has been replaced with something that is too strong this can cause too much drag (or even prevent a date change) and affects the movement. This is the most likely initial cause and my suggestion to prove it would therefore be to remove the date jumper and spring and see if the date moves forward and the watch continues to keep time.

If however the watch still misbehaves at date-change time then we're to the mech that changes the date. You may need to post a picture or two to see if myself or someone else can spot the issue in that case.

 Share
Go to topic listing

  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • JohnR725
      Parts sourcing for FHF 180 movement

      By JohnR725 · Posted

      All watches are repairable a few oven duff tools knowledge skills. But I was just agreeing that it be easier to get a movement.
    • jhoho202
      About repair watch's jewel.

      By jhoho202 · Posted

      First of all, thank you for the pdf file of the book on how to replace a gem. So, if there is a problem with the ruby in the movement, should I buy a new or used movement and replace it? When I watch videos on YouTube of people fixing used watches, I feel like there should be a way to buy a gem. Is there no way to buy it?
    • praezis
      Parts sourcing for FHF 180 movement

      By praezis · Posted

      I suppose @donutdan is not forced to earn his living by repairing watches.  I suppose he does it as a hobby and wants to gain experience, to get better in watchmaking and time is not the issue. Then @donutdan should rather try to repair the damage instead of swap parts from a maybe intact other movement. Swapping parts is not watchmaking. And often swapped parts are not the expected solution of all problems. All mentioned damages are repairable. Frank  
    • Malocchio
      Chinese tools debate

      By Malocchio · Posted

      Yeah I figured that one out when I googled and realized that my spindle is actually from Horia. It's smooth with no screwable cap.
    • JohnR725
      Parts sourcing for FHF 180 movement

      By JohnR725 · Posted

      I am puzzled by something a snipped out something from your image and what exactly disassemble tell us? my confusion is the symbol for FHF looks like image I have below year symbol as a star and righted this instant are not finding what that means? I suppose we could use the fingerprint system to verify it really is what it claimed to be. Size itself is really interesting there's almost no watches in that particular size. Then were missing details in the photograph above like diameter of movements to verify it really is the size and are missing the setting components.   went to the bestfit book looking at the symbols didn't see it. Look at the link below I did find it back to the bestfit book and yes it really is there https://reference.grail-watch.com/documents/history-of-ebauches-sa/ then bestfit book says lists the size as 10 1/2. one of the problems with vintage watches is finding parts yes a donor watch would be good.
×
×
  • Create New...