Jump to content

Movement 798.002


Recommended Posts

Anybody in the group know I can download a tech sheet on this movement?  In the process of disassembling this movement.......it runs but it’s losing time.............. l am learning by  taking apart cleaning and oiling and putting back tOgether certain movements.......

Link to comment
Share on other sites

Hi with the takeover of the ebauches , and various other swiss watch companies By the SWATCH group the information on ETA watches is now getting harder to obtain unless you are a purchaser of their products.  The ETA tech data Base is now enclosed within that realm. Trade Only

Link to comment
Share on other sites

The 978.001 is practicaly the same as the 978.002 and is an obselete movement.
I dont have the tech sheet for this but as it came in many shapes one could use a third party manual like this.
http://watchreserve.com/bulova-281010

Certina 133 is the same movement to
IMG_20200406_165435.thumb.jpg.2fe45979a16fa33e9a78fff8c97b2fa2.jpgo.

Or why not just replace it with this one.

https://www.esslinger.com/harley-ronda-2-hand-quartz-watch-movement-hq751e-hq978-o-a-3-7mm-to-replace-eta-978-002-and-eta-578-004/

The only downside is the dial is not always compatible with the Ronda movement.

Edited by HSL
Link to comment
Share on other sites

Took a look at this mystery, it seems no tech sheets are availible for this one so the close match and recommended replacement seemed to be the 976.001, but there are quite obvious differences in these two movements so they are not 100% the same but really close. Found some specimens in the bin to show the differences.

Scrap1.thumb.png.45fbd3f9a977bd8724c6dc5bf71e4707.png
 

Scrap2.thumb.png.066769757cb5a7b07f5fd31dc0ad600e.png

As expected the 978.002 only shovs the mechanical outlines at ETA.
https://shopb2b.eta.ch/978-002.html

But for the 976.001 they have the whole techsheet shaboom.
https://shopb2b.eta.ch/976-001.html#description
https://shopb2b.eta.ch/976-001.html#technical-documents
So you probably have to go with the 976-001 for this one.

 

 

Link to comment
Share on other sites

22 hours ago, HSL said:

Took a look at this mystery, it seems no tech sheets are availible for this one so the close match and recommended replacement seemed to be the 976.001, but there are quite obvious differences in these two movements so they are not 100% the same but really close. Found some specimens in the bin to show the differences.

Scrap1.thumb.png.45fbd3f9a977bd8724c6dc5bf71e4707.png
 

Scrap2.thumb.png.066769757cb5a7b07f5fd31dc0ad600e.png

As expected the 978.002 only shovs the mechanical outlines at ETA.
https://shopb2b.eta.ch/978-002.html

But for the 976.001 they have the whole techsheet shaboom.
https://shopb2b.eta.ch/976-001.html#description
https://shopb2b.eta.ch/976-001.html#technical-documents
So you probably have to go with the 976-001 for this one.

 

 

I found a ETA movement out of  Canada that sells the 978.001 movement for 78$... Thanks for the advice

Link to comment
Share on other sites



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Welcome to the forum, enjoy. I have a varimatic that went  out of sequence because it’s hydronic oil ran very low. Must admit it’s still in my garage just know time to fix it. Purchased a cheap Indian Junta/ sonic Pearl as a stop gap a few years ago and it still performs perfectly so no incentive to fix the Varimatic. 
    • The plate is OK, thanks. It seems the answer to my question is that this is a 'hack' & for me another reminder that in general, one won't be the first person to be tinkering with an old timepiece!. As you day, I've been fortunate to have gotten some good advice and, just as important, encouragement. I've been lucky then not to have the balance spring break as a result of my novice 'ministrations' - but I did remember to 'stroke' rather than bend per se. The clock is of sentimental value to the owner so I'm relieved to have now got it running to time with the support & encourage of forum members like yourself.
    • Recently purchased a L&R Varimatic knowing that the piston does not fully rise in the cylinder. The likely cause is air in the system. The manual calls for using a bleeder cup, which is as rare as hen's teeth.Does anyone have any experience with this issue and if so, how did they resolve it?
    • Thanks ww, its maybe not as much of a bodge trick that i thought it was. 
    • Thank you for your introduction and welcome to this friendly forum. We all look forward to your contributions and continued involvement.  It would be nice if you told us a little about yourself.
×
×
  • Create New...