Jump to content

Misaligned day disc in ETA 1164 movement

Stian

By Stian
in Watch Repairs Help & Advice

 Share

Recommended Posts

Stian WRT Addict

Stian

Posted
Posted

Hi gurus, 

I'm working on an ETA 1164 triple calendar movement and the day disc does not line up well with its window, see picture. The jumper action seems fine and there are three jumpers for the date mechanism which are all identical. Thus mixing them up should not matter.

Has anyone incurred such issues before with this movement? Is the only remedy to adjust the profile of the jumper?

-- 

Best regards,
Stian

20191122_122345.jpg

WatchMaker Super WRT Addict

WatchMaker

Posted
Posted

I've seen this on a movement with an incorrect jumper spring where the spring action was too weak to snap the wheel into position.

On the 1664 the different jumper springs have different part numbers (2571 vs. 2583). Likely the springs (and jumpers) are the same as you say but I'd recommend rechecking just to be sure. You shouldn't have to be reshaping a jumper's profile.

Stian WRT Addict

Stian

Posted
  • Author
Posted
16 hours ago, WatchMaker said:

I've seen this on a movement with an incorrect jumper spring where the spring action was too weak to snap the wheel into position.

On the 1664 the different jumper springs have different part numbers (2571 vs. 2583). Likely the springs (and jumpers) are the same as you say but I'd recommend rechecking just to be sure. You shouldn't have to be reshaping a jumper's profile.

Thanks for your response! You're saying 1664 but I assume you meant 1164? I haven't found the tech sheet for it, would you by any chance be able to share it? 

-- 
Best regards,
Stian

WatchMaker Super WRT Addict

WatchMaker

Posted
Posted (edited)

Like you I found the tech sheet for the 1164 elusive! I instead took a look at Cousins, who are pretty reliable on detailing parts correctly, and noted different part numbers for the day and months springs. [There was also https://www.spareparts-watches.com/product/992214/eta-1164]. Knowing I've had a similar problem to yours with an incorrect (= too weak) spring then I made my suggestion.

Having a bit more time today to look around I've only been able to find the 1164 in Bestfit:

image.thumb.png.ebff85af061b6b70fc4fd5229dc5ef51.png

However from this it's now clear that the 2571 part I mentioned is a different beast to the 2583! As you said the springs you're interested in are the same despite different numbers so 2583 (month jumper spring) = 2573 (day jumper spring) = 2575 (date jumper spring). Same story for the jumper levers themselves.

Long story short ... you can probably ignore my initial suggestion! I think all you can do at this stage is (re)check free lever and spring movement and that there is nothing rubbing.

Good luck! 

Edited by WatchMaker
  • 2 months later...
Pana New Member

Pana

Posted
Posted

Hi Stian,
I'm currently working on a watch with an ETA 1164 caliber, and I need a date lever (ref 2566). Is there any chance that you have one in spare part?
By advance, thank you! You can reach me at amory [dot] papavero [at] gmail [dot] com

Hamish Member

Hamish

Posted
Posted

I cant recall working on these, but would like to suggest that if (with the dial removed) the wheel snaps over nicely, the dial is not impeding it in any way and it is off set for all days, could it be that the wheel is out of phase with the drive ratchet. That is the wheel may have slipped on its centre. (hope you understand what I'm getting at)

  • 3 months later...
Stian WRT Addict

Stian

Posted
  • Author
Posted
On 2/13/2020 at 5:07 AM, Nucejoe said:

The gear attached to the back of day disc is normally just rivetted on which If not snug tight can be the cause of misalignment.

Thanks a lot, this was indeed it. I actually didn't read your post and figured it out myself, which only shows I would have saved some grey hair had I followed my own thread better ;)

 Share
Go to topic listing

  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • tonydagee
      Calendar work certina 25-651

      By tonydagee · Posted

      Hello all, just disassembling to service, but I can’t figure out the working of the calendar work…it’s not operational the jumper and spring are ok, but the operation of the driving wheel has me at a loss. I can’t see a cam to drive anything. Is something damaged or missing? Help please!
    • tIB
      Unusual Seiko dial damage

      By tIB · Posted

      Believe the relume (not a fan) was done a long time after the damage. 
    • Malocchio
      Unusual Seiko dial damage

      By Malocchio · Posted

      I can only think of some chemical reaction to reluming
    • nickelsilver
      A lathe with indexing that won't break the bank?

      By nickelsilver · Posted

      I have a little milling attachment for my WW lathe, but very rarely use it and not for wheel and pinion cutting. For that I use a small Sixis 101 milling machine. I normally do direct dividing, but sometimes have to do an odd count and use the universal index which also fits on the Sixis.   Back in the day when I didn't have a mill, I would cut gearing on my Schaublin 102. It has a universal dividing attachment which fits the back of the spindle. Both it and the one for the Sixis are 60:1 ratio, and with the set of 4  index plates I can do almost any division. When I've had to do a strange high count prime number, I print a disc with the needed division and just place the plunger on the dot. Any position error is reduced by a factor of 60 so still plenty accurate.   The machines are a mess in the pics as I'm in the process of making a batch of barrels for a wristwatch 🙃.   This is the Sixis. The head can also be placed vertically, as can the dividing spindle.   Dividing plates. The smaller ones fit another dividing spindle.   Universal divider for the Sixis. I put it together with parts from an odd Sixis spindle that takes w20 collets, like the Schaublin 102, and a dividing attachment from a Schaublin mill.     The dividing attachment for the 102. The gear fits in place of the handwheel at the back of the headstock.   And the little milling attachment for the WW lathe. I just set it on the slide rest to illustrate the size, you can see from the dust on it it really doesn't get used much. I think only when I change bearing in the head, to kiss the collet head seat (grinding wheel still in the milling attachment).
    • SidKop
      Opinions on Seiko's 4R and 6R movement quality from those more able to judge

      By SidKop · Posted

      I read a lot about the quality (or lack thereof) of Seiko's 4R, 6R, 8L  movements...or more specifically the lack of regulation from the factory. Especially when compared to similar priced manufactures using SW200's or ETA's. I thought I'd ask those more in the know, do the 4R's and 6R's deserve their bad reputation, is it fairly easy for someone with minimal skills (or better yet a trained watch mechanic) to dial in these movements to a more acceptable performance.    For background I spent more on a 1861 Speedy years ago, expecting that the advertised 0-15s/d  would probably perform more like 5-7s/d. In reality it's been closed to 2-4s/d. 
×
×
  • Create New...