closing tag is in template navbar
timefactors watches



TZ-UK Fundraiser
Results 1 to 12 of 12

Thread: ETA 2801 help

Hybrid View

  1. #1
    Master
    Join Date
    Oct 2018
    Location
    Hertfordshire
    Posts
    2,768

    ETA 2801 help

    Having cocked up removing the stem from my PRS 29-A so that I couldn't re-install I have stripped down the movement and am in the process of rebuilding.

    However I am having problems with the reassembling the keyless works. Once I have fixed the operating lever, setting lever, return bar and spring I cant pull the crown out fully. If I work backwards and take the spring off I still cant fully pull out the crown. It looks like the return bar is contacting the operating level which stops any further movement. If I remove the return bar I can pull the crown out fully and the operating and setting levers end up in the setting position

    I assume I am making a beginners mistake but I can't figure out what. Any assistance will be much appreciated.

    I'll post some photos below.

  2. #2
    Master
    Join Date
    Oct 2018
    Location
    Hertfordshire
    Posts
    2,768
    As promised photos. First up fully assembled keyless works. Crown in:



    Crown out as far as it'll go:



    Next spring off and crown in:



    Crown out:



    Next return bar off and crown in:



    And crown out:



    I hope they help.

    Tapatapatapatapatalk

  3. #3
    Master
    Join Date
    Oct 2018
    Location
    Hertfordshire
    Posts
    2,768
    Oh yes and then there is this:



    I think I was a bit heavy handed when replacing it. I assume it is easier to buy a new pallet bridge than ask someone to put the jewel back in.

    Tapatapatapatapatalk
    Last edited by Wimm; 9th February 2020 at 19:20. Reason: Spelling

  4. #4
    Grand Master
    Join Date
    Jul 2007
    Location
    Wakefield, West Yorkshire
    Posts
    22,498
    The initial problem with the stem was caused by the yoke becoming disengaged from the sliding pinion, this is all too easy to do on these movements (and similar 2824). It can be avoided by ensuring the watch is in handset when the crown is removed, and taking care not to depress the end of the setting lever when removing the crown. The black 1.0mm screwdriver just fits the slot, press down and you can’t go too far, use a smaller screwdriver or tool and you risk pressing it too far. Even then, you have to be careful when fitting the crown, turning it backwards if required to engage the square section into the sliding pinion.

    Once the problem has happened there are two ways to solve it, either take the barrel bridge off to access the sliding pinion from the movement side ( fiddly) or take the dial off and get at it from the top of the movement. What I’m struggling to understand is why you’ve stripped the whole movement down, the problem’s confined to the keyless work and it’s straightforward to fix.

    I can’t see what you’re doing wrong with the keyless work, its a bit fiddly but it should all go together easily.

    The pallet cock jewel can be refitted but you need the correct jewelling press to refit it. Getting the height correct is tricky and beyond the scope of a beginner. A replacement is the easier option.

    I don’t know how much experience you have with movement work, or what cleaning and oiling facility you’ve got, but the advice I’ll give is this: if in doubt STOP. Pack everything up carefully in small plastic bags and post the lot to a repairer to sort out. I’ll sort this out for what I’d charge to service the watch.

    When I started in 2011/12 I made a similar mistake with a quartz Omega, I ended up fitting a new movement which needed parts swapping over to match up, that watch spent 9 months in pieces until my skill level developed sufficiently to sort it out, so I can relate to your problems.

  5. #5
    Craftsman
    Join Date
    Oct 2016
    Location
    South East
    Posts
    459
    The pallet fork bridge is cheap enough, so just buy one. No idea how you got that stone out though! Gentle gentle is the method.

    With the keyless works, follow this in order as laid out https://www.cousinsuk.com/PDF/catego...-ETA2836.2.pdf
    From your picture the only thing that I can/can't really see, but it looks like part 445 the combined setting lever jumper (the piece that is on top of the keyless works) the sprung arm at the bottom of the pictures that engages with the yoke. It looks like it is under the yoke and not just next to it.

  6. #6
    Master Thewatchbloke's Avatar
    Join Date
    Dec 2010
    Location
    Oxfordshire UK
    Posts
    7,238
    Quote Originally Posted by me32dc View Post
    The pallet fork bridge is cheap enough, so just buy one. No idea how you got that stone out though! Gentle gentle is the method.
    If that happened during assembly check you haven't also broken a pallet fork pivot off!

  7. #7
    Grand Master
    Join Date
    Jul 2007
    Location
    Wakefield, West Yorkshire
    Posts
    22,498
    Quote Originally Posted by Thewatchbloke View Post
    If that happened during assembly check you haven't also broken a pallet fork pivot off!
    +1.....or bent one, which is difficult to spot. I had a 2824 with a bent pallet lever pivot, watch ran badly, swapped for a new one and it ran perfect.

    OP has my sympathies with this one, I’ll encourage anyone to get into movement work but its best to start on old watches that are worth nothing.

  8. #8
    Master
    Join Date
    Oct 2018
    Location
    Hertfordshire
    Posts
    2,768
    Thanks for all the advice gents.

    I have been practicing, on and off, with a couple of old movements for a year or so but this is the first of my watches that I have worked on. It was only supposed to be a crystal change but once I realised my mistake with the stem I knew it would be a bit more involved.

    I stripped it down as I didn't know any better but it was also a good way of learning another movement. Plus spares are still available so if I really cocked up.... I certainly wouldn't have done it on one of my vintage watches.

    Before I have another go at the weekend I do have another question. The tip of the return lever is kinked downwards, is that supposed to fit beneath the operating lever? It looks like it isn't and is coming in to contact with the operating lever. I think it is this that is stopping the full movement of the keyless works.

    I have examined the pallet fork pivots and the are still present but I suspected that there could be some damage that I could not see so another pallet fork is on the shopping list.

    Tapatapatapatapatalk

  9. #9
    Grand Master
    Join Date
    Jul 2007
    Location
    Wakefield, West Yorkshire
    Posts
    22,498
    If you send me an e-mail address I can send you some detailed photos I took several years back which show the keyless work being taken apart step by step on a 2824 which is the same as this. I think this would help you. I take photos of every new movement I work on and keep them stored for reference.

    You're either making a small mistake or you've sprained something taking it apart. They are a bit fiddly to reassemble but once you've got used to them they're very straightforward.

    If you go on the Cousins website they have all the ETA technical service info in pdf form, v helpful.

  10. #10
    Master Thewatchbloke's Avatar
    Join Date
    Dec 2010
    Location
    Oxfordshire UK
    Posts
    7,238
    My money's on a bent yoke tip contacting the set lever preventing it from moving to its full extent. Either bend it straight (can be difficult) or replace it (a lot easier).

  11. #11
    Master
    Join Date
    Oct 2018
    Location
    Hertfordshire
    Posts
    2,768
    Thank you for the further advice. It looks like the shopping list is getting longer.

  12. #12
    Grand Master
    Join Date
    Jul 2007
    Location
    Wakefield, West Yorkshire
    Posts
    22,498
    I`ve sent some pics by e-mail that might help.

    Hadn't thought about the tip of the yoke being bent, that takes some doing.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Do Not Sell My Personal Information