Jump to content

How to lubricate upper balance jewel (old style)?

Guest

By Guest
in Watch Repairs Help & Advice

 Share

Recommended Posts

Guest

Guest

Posted
Posted (edited)

I am working/learning on a 60s era Benrus wristwatch I bought on Ebay for $20.  This watch has an old-style, fixed upper balance jewel that is not accessible for lubrication via a cap jewel retainer clip like newer movements.  I can't find any mention of the proper way to lubricate it, and I am hesitant to disassemble the balance without first asking for advice.  Any thoughts on this would be greatly appreciated.  Thanks!

IMG_3218.jpeg

Edited by Loren
Link to comment
Share on other sites
HectorLooi Distinguished Member

HectorLooi

Posted
Posted

These pre-incabloc jewels can be a real pain to lubricate. Sometimes if you are lucky, the screws holding the jewel in is on top. Most of the time, the screws are under the balance cock.

You have to disassemble the balance, remove the hairspring by unpinning it or loosening the hairspring stud. Then you'll see the screws underneath. 

When you remove the screws, the upper jewel plate comes off together with the regulator arm. Cleaning and lubricating the jewels can then be carried out.

Putting it back together with the drop of oil in place can be a real pain.

Hope this helps. Good luck.

Link to comment
Share on other sites
nickelsilver Distinguished Member

nickelsilver

Posted
Posted

Looks like the springy-thing screwed on top of the cock holds the jewel in place. Get the balance off the cock (loosen stud screw and open the regulator), disassemble and clean the jewels. For this style of jewel, however it's held together, I oil after assembly. From the underside, put a small amount of oil in the oil sink of the hole jewel, then insert a pin to get it to suck through and contact the cap jewel. Check the oil ring looking at the cap jewel, and add more as necessary. It's usually not necessary to use the pin again to add extra oil. It's much easier than trying to oil the cap jewel then assemble.

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


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • PeterS
      Stem removal after fitting hands

      By PeterS · Posted

      Yes, the seconds hand is the longest and goes almost to the edge of the dial. I can’t quite picture it how you do it on the rubber pad
    • Murks
      Battery

      By Murks · Posted

      A don't think so it leaked or damaged it because the watch itself works it just the buttons ain't working not connecting with the circuit board have taken more pictures of where the buttons makes contact with the circuit board.
    • Neverenoughwatches
      Stem removal after fitting hands

      By Neverenoughwatches · Posted

      I think what peter means oh is once he has fitted the hands and  checked for  alignment if them and that they dont foul, how does he then hold the movement to remove the stem in order to case up. The dial cannot be laid on a cushion or in a movement holder as the hands will get damaged. This can be quite tricky for a beginner, what i do is  to stand the movement on edge on a rubber pad so it doesn't slip. Hold the top edge with one finger then my dominant hand uses 3 fingers to press the stem release and flick out the stem. See below peter, leave off the second hand as this is the longest and gets caught the most, then fit it once the stem is out. Alternatively place the movement in one of the cup style holders, i imagine this is what they are designed for. They only touch the very edge of the dial.  
    • PeterS
      Stem removal after fitting hands

      By PeterS · Posted

      Yes I understand that. What I’m asking is, after the hands have been fitted, it’s been checked that the hands do not touch etc. then I need to remove the stem to fit the movement in the case. I have the push type, I need to turn it upside down and push the setting lever post and pull the stem out. But of course the dial and hands are in place and I have a glossy dial with lume dots and I do not want to cause any damage while it’s upside down pushing on the post of the setting lever.
    • oldhippy
      Stem removal after fitting hands

      By oldhippy · Posted

      You have answered your own question. You just push the setting lever nipple in or if its the screw in type unscrew it a little. You should always remove any hands and the dial before putting it in your movement holder. 
×
×
  • Create New...