Jump to content

Valjoux 72C

JakeGr
 Share

Recommended Posts

JakeGr New Member

JakeGr

Posted
Posted

Hey,

I need some help and advise; 

The second central sweep hand on my Wakmann triple date frequently rubs against the minute hand. While trying to adjust it I realized that it sits without having a collet; meaning there is a hole in the hand and no little tubing collet attached to it. No wonder it tilts to the side from time to time.

The question is: did you ever see a central sweep seconds hand without this little collet attached to it?

 

If I realize that it was broken by the previous owner at one point, I will look for the 0.25 hole replacement hand.

sstakoff WRT Addict

sstakoff

Posted
Posted

I'm surprised that it has enough purchase on the chrono wheel pivot to remain in place when you reset the chrono. Are you certain that the pipe (what you refer to as a collet) is not actually attached to the chronograph wheel pivot??? I had that exact situation with a Breitling Cal 11i. If it is still attached it can be tricky to remove without crushing it. I used a cannon pinion remover. Here's a pic of the repair underway....

IMG_0628.JPG

JakeGr New Member

JakeGr

Posted
  • Author
Posted

Well, the sweep hand is definitely flat and has no pipe attached to it. In order for it to sit tight on the pivot I had to make a hole smaller by tapping on the edge of it from the underside of the hand - this was quite a task under the microscope.

 It is sitting tighter now and the hand resets to zero. I am sure that if I reset this chrono to zero 10-20 times, the hand will get loose again and might fall off.

I managed to find a replacement hand on ebay. As soon as it arrives I will paint it white and will install it. This hand does have a tube .25. Will see how it works.

SSTAKOFF, do yo mean that the tube might broke off the hand and still remains permanently on the pivot while the hand is resting on it? That is when you think it will be difficult to remove it?

I am a collector, not a watchmaker, and over the years I gained some skills and knowledge, so thank you for sharing your knowledge with me.

Thanks guys for your input.

I will share the outcome of the effort.

By the way do you know where I can get pushers for the Walmart triple date? The previous owner or a butcher watchmaker made a few dents on them by, I guess, trying to grab them and unscrew them with the pliers???!!! :)

They look like the pushers of the Navitimer with Venus 178  made in 1970-s.

 

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing

  • Similar Content

  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • TimeWerks
      Omega sweep second pinion friction spring - correct tension IS important

      By TimeWerks · Posted

      Thanks for this post MikePilk, I just came across a similar problem with an Omega 1022.  The problem I had was the seconds pinion spring was bent out of shape and did not even engage with the wheel properly, so the seconds hand was not moving at all. (no power loss though :) I removed the automatic module so I could access the spring and work on it. Once I bent it back close to the right shape, I experienced the same problem you reported about power loss.  Many tweaks later, and the seconds hand is moving properly again, with amplitude back to good numbers again. Cheers
    • caseback
      Clock newbie

      By caseback · Posted

      After cleaning up the pivots, I made bushes on the lathe. At this point I've pressed in 6 bushes (3 sets) and the wheels turn smooth. What I can also tell you, is that I'm not looking forward to final assembly. Getting the pivots aligned seems to get exponentially more difficult with each wheel that is added.
    • JohnR725
      Greetings from Whidbey Island.

      By JohnR725 · Posted

      Islands are interesting places to live depending upon their size and other factors. This is a bigger island and it has a bridge to get there at least on one end. It's also big enough that you don't have to go someplace else to get things typically. It can be a problem if you get a job in Seattle though. Yes I've known of people who commuted from the island to Seattle for a job and I don't quite remember how many hours it took but it took a long time. So basically islands are nice if you don't have to leave very often.
    • VWatchie
      What's your thoughts on this Rolex Sea-Dweller, ref. 16600, calibre 3135 project?

      By VWatchie · Posted

      Thanks @JohnR725! Everything you say makes a lot of sense and is encouraging to read.
    • JohnR725
      What's your thoughts on this Rolex Sea-Dweller, ref. 16600, calibre 3135 project?

      By JohnR725 · Posted

      isn't it nice to have a decent case open or when the case doesn't want to be opened? In the case of a Rolex watch that supposed to pass specific water resistant testing you probably do need to tighten the back down. But they shouldn't be tightened so much that they risk stripping the threads out. Then the other problem that comes up is the gaskets can start to disintegrate and then getting the back off can be quite a challenge unless you have a really good tool and perhaps some penetrating oil to loosen things up. Yes really nice case marking. When I was in school we were taught to mark the cases and  the American watch and clockmakers Institute even had a? So if you joined at one time they would give you an identification number. They were explaining or giving an example of if the watches ever found in you have a unique number they can perhaps figure out the history of the watch or identify the body it's attached to for instance not that that probably comes up that often. So you got a unique number and even made a special metal stamp that you can purchase. It wasn't a super big aggressive stamp but still it left a mark in the back of the case. Then I heard from people at work on Rolex watches they were using a felt pen indelible but later on they decided that was bad because apparently the ink could release  chemicals although it seems like once it's dry that shouldn't be an issue. Then of course today was nice is you can keep computer records sealed have to mark anything at all I personally find it's best to leave no reference behind that you were even there. Especially when you have a beautiful watch that has no markings at all and now it has your scribbling all over it not good typically if there is a typical and watch repair?  a lot of minor repairs you don't need to do a complete servicing. But beyond a certain point you're going to have to take apart a lot of stuff you're going to disrupt the lubrication even if it looks perfect right now and yes you might as well just go ahead the service the whole thing. also in a watch like this where a lot of things seem to be going on the complete service would be better then you'll know exactly where you stand versus dealing with unknown mysteries for prior repair.
×
×
  • Create New...