Jump to content

Oiling Universal Cal. 800 escape wheel jewel

handwound

By handwound
in Watch Repairs Help & Advice

 Share

Recommended Posts

handwound Watch Enthusiast

handwound

Posted
Posted

Hi,

I'm going to work on a Universal Genève with the calibre 800. The jewels of the escape wheel have endstones and I'm not quite sure how to take them apart and oil them. I hope someone here can give advice :) 

 

 

IMG_20200905_202448.jpg

Joseph111 Member

Joseph111

Posted
Posted (edited)

I suggest watching this part of Mark's video on repairing a watch. It demonstrates it far better than I could explain it:

If you are struggling to remove the end stone, I suggest picking the jewel assembly up with a piece of rodico and then pulling the bottom out very carefully with tweezers. It may take a few attempts but you should get the two pieces coming apart.

Edited by Joseph111
Just realised the video didn't show part of the process
handwound Watch Enthusiast

handwound

Posted
  • Author
Posted

Thanks for the answer, but I don't have a problem with the endstone of the balance, an incabloc is quite easy to handle :) the problem are the cap jewels of the escape wheel. It's not the first watch I'm working on, but I've never dealt with something like this. 

822097816_IMG_20200905_202448(2)_LI.thumb.jpg.0004a16861acf5da7d47b7bbedee6d5f.jpg

EatPeach WRT Addict

EatPeach

Posted
Posted

Hey. I have a walk through about this movement. Check this

And the cap jewel of the escape wheel can be taken of. you just need to use a tweezer and turn it just like how you deal with seiko diashock jewels and if can fall of. As for the lurbrication, you can check my walkthrough.

 Share
Go to topic listing

  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • BobG
      Etachron regulation system

      By BobG · Posted

      I wanted to post an update as I have two movements running really well now, 230-250 amplitude , 0.5 and under beat error, and +/-8 seconds or so. I removed the hairspring assembly in order to start over and noticed that the terminal curve between the stud and regulator arm was distorted. The stud was lower than it should be. I massaged the curve to look pretty good and reinstalled it. I followed Alex's video advice, best I could with 10x magnification, and with the regulator arm set in the middle of the curve I adjusted the stud so the spring was centered. I then made sure I could move the regulator arm the entire terminal curve without upsetting the coils. I then put it back on the Timegrapher and began closing down the regulator pins until I saw a change in amplitude which means to me that the pins were now pinching the spring. I opened them slightly and it looks good except I have a 0 on dial down, +3 on dial up but -16 on crown down.  I'm a bit stuck on how to adjust out the positional error. I also noticed a drop in amplitude, 180-200 on crown down. In the other video link I posted at about minute 26 if I remember he adjusts out positional error by manipulating  the regulator pin gap. With crown down the hairspring falls away from the pin and the rate slows so he closes the pins a bit to keep them tighter in crown down position. That means the spring is tighter on dial up as well but then he moved the regulator arm to slow the movement.  There must be some Seiko experts here that have some methods for dialing out positional errors. 
    • rjenkinsgb
      Short bead springbars

      By rjenkinsgb · Posted

      Like these? https://www.watch-tools.de/metal-straps/springbars/assortment-360-strong-spring-bars-beco-inox-o-1-8mm.php  
    • caseback
      Cap jewel with what looks like a circular engraving around the edge

      By caseback · Posted

      I've seen them on several swiss-made movements as well. Last one was a Tissot if I remember correctly.
    • caseback
      A lathe with indexing that won't break the bank?

      By caseback · Posted

      This thread might be interesting for you:  
    • VWatchie
      Cap jewel with what looks like a circular engraving around the edge

      By VWatchie · Posted

      I've never seen them, then again, I haven't got a ton of experience, but "common"? Really? In what context have you seen them? I'm not questioning you. I am sincerely curious why I've missed it. An alternative to Fixodrop is to apply less oil (no more than 50 % of the circle area). The only downside would be that it would shorten the service interval. More oil will prolong the service interval, but if the movement is subjected to trauma, there's a risk it will be displaced. Fixodrop makes it more stable. Unfortunately, Fixodrop is seriously expensive.
×
×
  • Create New...