Jump to content

Removing stem from Rotary 3984 (French quartz)

kopah

By kopah
in Watch Repairs Help & Advice

 Share

Recommended Posts

kopah New Member

kopah

Posted
Posted

Hi all. First-time poster here. I need to remove the movement and crystal from this watch so that I can send the case to be replated. I've been looking at videos and tutorials on how to remove the winding stem, but for the life of me I can't figure out how to do it on this watch. I know it should be a relatively simple operation, and the guy at my local jeweller was going to charge me $45 to do the disassembly, so here I am!

The problem is that I don't see any arrow, or "dimple" that I'm supposed to push down on, or anything. Or if it's a screw release, I don't know which screw to unscrew. The watch in question is a quartz Rotary with a French movement and the number "3984" etched on the back.

IMG_9902.jpg

Link to comment
Share on other sites
philipk5 Member

philipk5

Posted
Posted

If you take out the plastic movement holder and (repeatedly) pull the crown out as if setting the time and then push it back whilst carefully studying any likely holes/dimples/levers etc, the release mechanism should become apparent. They can be tricky to find at times but it will be there somewhere! 

Good luck and let us know when you find it.

Link to comment
Share on other sites
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • oldhippy
      Hello!

      By oldhippy · Posted

      I still need to see the complete movement as there are many types of Elgin movements. The part that you are holding is called a snail. 
    • Knebo
      Omega cal.t17 help

      By Knebo · Posted

      Just a quick update on my T17. I just finished the service and, boy, was this nerve-wrecking.... I bent the hairspring a few times. Stupid accidents. Once it was beyond repair and I had to get a donor movement. The replacement hairspring turned out to be a few millimeters shorter and therefore the watch was running 6min too fast even when the regulator was set to the slowest position. So I needed to get timing washers (see another post here: https://www.watchrepairtalk.com/topic/25505-30t2-adjustment-of-timing-washers/?do=findComment&comment=248100).  After all, I'm now, getting a 310° amplitude (fully wound, dial up, lift angle 54°). About 250 in vertical positions. Quite a drop, but apparently not too abnormal for a 90-year-old watch with a slow beat rate (18000bph) and rather heavy balance wheel. After 24h I still get 280 (horizontal) and 220 (vertical). And now the highlight:  66h of power reserve! You may remember that I posted that I used a slightly weaker, but also slightly longer mainspring than prescribed. See my comments above.  I used GR 3937 (instead of GR 3632). So I recommend this mainspring and ticker oils (9020 on escape wheel and HP1300 on the rest of the train).    
    • Knebo
      30T2 adjustment of timing washers

      By Knebo · Posted

      OK! I was able to get a nice set of timing washers from ebay! And they worked really well. I needed to slow down the movement by about 6min and I put four (=two pairs) of 3-minute washers (rated for the the size of the movement) and it did pretty much exactly that. On one pair of screws, there were already washers. So I added a second washer on those screws. Maybe not ideal, but it doesn't cause any problems. Poise is ok.. not perfect.. but I had so many issues with the watch that I decided to accept it. It's a 90-year-old watch. Delta is around 40 seconds.   
    • RichardHarris123
      Chronograph Pusher Rod for EB8371-67 Snapped and Stuck in Button. Can't Unscrew.

      By RichardHarris123 · Posted

      I think it is friction fit, there are tools to remove them, cheaper versions are available. You could try adapting some pliers, see my crap drawing.  The pushers are available in various sizes, you could measure once the tube is removed. 
    • Malocchio
      Is this pallet fork over-locking?

      By Malocchio · Posted

      The entry jewel's not as bad but seems still too much lock. I do epilame the escape wheel and pallet jewels, then run dry for about 15 minutes, then put 9415 in exit jewel very little at a time and check with backlight how the oil's distributed.  Another question is about capped escape wheels. Should I somehow wear the epilame off the pivots before installing the wheel? I normally let the escape wheel run dry for that said 15 minutes when there's no cap jewel.
×
×
  • Create New...