Jump to content

ETA 2896 disassembly/assembly pictures

k3l3k
 Share

Recommended Posts

k3l3k Member

k3l3k

Posted
  • Author
Posted (edited)
2 hours ago, VWatchie said:

Hopefully, you'll be helped by ETA's Technical Documents for this calibre which you'll find here: https://shopb2b.eta.ch/en/mecaline/phased-out/2896-2896-5.html

Many thanks for the link technical document on ETA 2896. I already have a copy but I am struggling to follow some of the instructions on page 28 (snapshot attached).

The background is that I wanted to replace the crown (broken off) on my ETA 2896 based watch and I managed to knock out the setting level out of position in the process of taking the stem out (pressed the setting lever pin a bit too hard and knocked it out of position). The stem is now stuck (when inserted back first time).

I am a watch hobbyist and have worked on some Chinese movements in the past so I think I know what I need to do in order to put the setting lever back in place. I do not want to start the disassembly until I have understood all what is required.  

I would be grateful if I can get some help with the following instructions on page -28 in your linked document:

"Position the cam support 41 after the missing tooth (*see drawing fig. 2) by turning the winding stem clockwise"

Which "missing tooth" is being referred to?

Secondly in the instructions "Push the positioning spring of the tens jumper (49) towards the centre (**see drawing fig. 2)."

What is the purpose of pushing the tens jumper (49) towards the centre? Is it going to lock somewhere (I am afraid, I cannot see an obvious locking point)?

Any help is very much appreciated.

 

Date disc assebly instructions..JPG

Edited by k3l3k
Link to comment
Share on other sites
VWatchie Distinguished Member

VWatchie

Posted
Posted
4 hours ago, k3l3k said:

I do not want to start the disassembly until I have understood all what is required.  

I'm afraid I don't understand the instructions either and I've never worked on this calibre. I think disassembling the keyless works (slowly and methodically taking pictures of every step) should help you understand how to reassemble it.

Link to comment
Share on other sites
k3l3k Member

k3l3k

Posted
  • Author
Posted (edited)
24 minutes ago, VWatchie said:

I'm afraid I don't understand the instructions either and I've never worked on this calibre. I think disassembling the keyless works (slowly and methodically taking pictures of every step) should help you understand how to reassemble it.

Thanks for the guidance. I can start the disassembly and take detailed pictures but worry that I will get stuck assembly. The watchmaker in this video decided to skip video the dial side assembly for ETA 2896 (perhaps for a good reason 🙂) https://www.youtube.com/watch?v=pKZLBB39ndQ

Edited by k3l3k
Link to comment
Share on other sites
k3l3k Member

k3l3k

Posted
  • Author
Posted (edited)
On 4/20/2023 at 3:10 PM, VWatchie said:

I'm afraid I don't understand the instructions either and I've never worked on this calibre. I think disassembling the keyless works (slowly and methodically taking pictures of every step) should help you understand how to reassemble it.

First pass done. Got everything to work except the quick date change is unfortunately not working. Gives incorrect date on winding at second stem position (e.g. goes to 0,0 which never showed up before). I think it is critical to understand what the instructions are page -28. Any help would be appricated. 

Edited by k3l3k
Link to comment
Share on other sites
k3l3k Member

k3l3k

Posted
  • Author
Posted (edited)
On 4/22/2023 at 12:26 AM, k3l3k said:

First pass done. Got everything to work except the quick date change is unfortunately not working. Gives incorrect date on winding at second stem position (e.g. goes to 0,0 which never showed up before). I think it is critical to understand what the instructions are page -28. Any help would be appricated. 

image.thumb.png.7f92c4932b9050bf59868b1bccb0ca1f.png

This should help others who have trouble like I had. The instructions are from Omega cal. 2610 (ETA 2896). The cam support needs to be rotated clockwise to bring its missing tooth at the position shown🙂

Edited by k3l3k
  • Like 1
Link to comment
Share on other sites
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • Waggy
      First Project Already A Bit "Sideways"

      By Waggy · Posted

      Here is another option, if you have the patience to sort through the parts you usually find 50-100 screws as well as some other cool stuff. Most times I get an order from these guys I get a 250g box, takes a few days, but end up with hundreds of spares and all you need is for one of them to be useful and it pays for itself. Also helps hone your tweezer skills!
    • Neverenoughwatches
      Can you soften the squeeze on a tweezer?

      By Neverenoughwatches · Posted

      As Hector said they have too much  tension, that tension is also fixed and not easy to control. Conventional tweezers have infinitely variable grip provided by us. 
    • Paul1991
      Hairsrping alignment

      By Paul1991 · Posted

      Thank you and i appreciate that, it looks very different    Thank you sir but i think there is a little problem according to that reading it's because it is far different to the other move that i serviced, i will atouched the photo. They are different movements but this one is 7s26b movement and they are also different in shape when it comes to the ballance assmebly. Thanks also for the concerned i appreciate that. 
    • ManSkirtBrew
      My first Gruens. Precision 510 and N510R movements.

      By ManSkirtBrew · Posted

      Donor movement showed up, so I stole the bridge screw from it. Which made me sad, because it's in such nice shape! It seems a shame. Maybe I'll find a use for it one of these days. Unfortunately, the stem is for a different style of case and is much too short. Fortunately, I ordered a brand new stem from McCaw Company. Unfortunately, the crown on the donor movement is thoroughly stripped out (it unscrewed in a shower of brass) so i just put the old stem back in for now until I source a new crown. As you can see, it's just a little too long for this case. Overall I'm super pleased. I didn't think I'd like the bracelet, and even that is growing on me.   Anyone have a favorite crown assortment?
    • rehajm
      Vertex Dirty Dozen crystal

      By rehajm · Posted

      A couple of pictures of the front… Sorry, I’m months away from this one, but…there is an edge to the bezel but I see no obvious signs of previous bezel removal and it is quite thick so it would be difficult to grab an edge on the crystal with a crystal lift. It does look like in/out thru the back…good luck…
×
×
  • Create New...