Jump to content

70s Newmark Dive watch

RyanGreerMcGilloway
 Share

Recommended Posts

RyanGreerMcGilloway Watch Enthusiast

RyanGreerMcGilloway

Posted
Posted

Hello fellow enthusiasts!

 

I have a vintage newmark dive watch. 

I really love the bezel and two crowns. 

I would love love to get this baby back to it’s former glory. However, there a few issues preventing me.

Perhaps you guys / gals can help me.

The major issue is that the one piece of the stem locking system has sheared. I’m not sure what it’s called. The pin that stops the stem from pulling right out and when it should be working can be pulled and the mechanism shifts to wind. The peice that’s rests on the movement is fine, but someone has forced the stem out and snapped the pin that stops it.can anyone please advise.

Another issue is that the dial legs have also sheared off.  

The rear back plate also doesn’t press down all the way and therefore there’s too much movement within the case for the movement. 

The balance is also randomly stopping.

Please can have some advice.

 

89089AE5-BF34-4F17-BDFA-488986A10804.jpeg

18B995BF-8D2B-4EF1-B133-229970AB913C.jpeg

1410C6B2-C537-4F07-BCA1-1B08B139131B.jpeg

AEEB70F0-E4A1-4DC3-9932-90B84975C72D.png

Link to comment
Share on other sites
AndyHull Distinguished Member

AndyHull

Posted
Posted (edited)

Looks like an EB8805 -> https://17jewels.info/movements/e/eb/eb-8805/

image.png.4f321964e15ed7ea938d01a54f2e21ef.png

image.png.ea5b5a3526d2062ab717c4e4b015cf65.png

It should be relatively easy to find a donor movement, as they were produced in large numbers.

I may in fact have one somewhere, but I'm at work, so I can't check at the moment.

What does the broken part actually do?

Do you have access to a 3d printer to print some sort of movementretaining ring? If not you may be able to modify one from a modern quartz watch to fit.

Edited by AndyHull
  • Like 1
Link to comment
Share on other sites
AndyHull Distinguished Member

AndyHull

Posted
Posted (edited)

I presume, though the photos are unclear, that this is the jeweled version of the EB 8805, although that may not matter as I'm fairly sure the keyless work is the same on all versions, but I'll have a rummage when I get a chance and see if  I have that part in one of my donor jeweled EB 88XX movements.

Sourcing parts for these movements is generally a lot easier than with some of the higher quality stuff, simply because there were so many of them produced.

They do tend to suffer from a number of issues (in addition to the usual balance and fork problems).

The spring barrel is inclined to wear, and the strange hold down spring/bridge that keeps it in place is inclined to loose its springiness and allow things to slip. Also as you have found, the keyless work is a little fragile.

They produced a whole bunch of variants of this movement over the years, including a jump hour "digital" version - More info here -> http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&EB_8800 

... and the service sheet is here ... -> https://www.watchrepairtalk.com/applications/core/interface/file/attachment.php?id=25537

Edited by AndyHull
Link to comment
Share on other sites
RyanGreerMcGilloway Watch Enthusiast

RyanGreerMcGilloway

Posted
  • Author
Posted
2 minutes ago, AndyHull said:

I presume, though the photos are unclear, that this is the jeweled version of the EB 8805, although that may not matter as I'm fairly sure the keyless work is the same on all versions, but I'll have a rummage when I get a chance and see if  I have that pert in one of my donor jeweled EB 88XX movements.

Sourcing parts for these movements is generally a lot easier than with some of the higher quality stuff, simply because there were so many of them produced.

They do tend to suffer from a number of issues (in addition to the usual balance and fork problems).

The spring barrel is inclined to wear, and the strange hold down spring/bridge that keeps it in place is inclined to loose its springiness and allow things to slip. Also as you have found, the keyless work is a little fragile.

They produced a whole bunch of variants of this movement over the years, including a jump hour "digital" version - More info here -> http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&EB_8800 

I greatly appreciate all of your help!!!! A real asset to this forum. 

I have had a scour through the internet to find donor movements, however i am struggling to find anything. 

I would appreciate if your could have a look in your box of bits n' bobs and will pay you for one if you can find one. 

Link to comment
Share on other sites
AndyHull Distinguished Member

AndyHull

Posted
Posted
1 minute ago, RyanGreerMcGilloway said:

I greatly appreciate all of your help!!!! A real asset to this forum. 

I have had a scour through the internet to find donor movements, however i am struggling to find anything. 

I would appreciate if your could have a look in your box of bits n' bobs and will pay you for one if you can find one. 

Always a pleasure to help.
I'm at work, so I'll take a look later. If I have one I'll message you here on the forum and pop it in the post.

If you look at my previous post, I added a link to the service manual.

If you check that and give me the part number(s) then that will ensure I send the right bit(s). 

Link to comment
Share on other sites
RyanGreerMcGilloway Watch Enthusiast

RyanGreerMcGilloway

Posted
  • Author
Posted
4 minutes ago, AndyHull said:

Always a pleasure to help.
I'm at work, so I'll take a look later. If I have one I'll message you here on the forum and pop it in the post.

If you look at my previous post, I added a link to the service manual.

If you check that and give me the part number(s) then that will ensure I send the right bit(s). 

Oh sorry didnt see the second URL.

I believe its item, 443/1 as its local to the other keyless works items. 

image.png

Link to comment
Share on other sites
yankeedog Distinguished Member

yankeedog

Posted
Posted

For donor movements look on ETSY. Look at amystevensoriginals. The lady sells mainly to the art crowd . There are all kinds of movements which she sells in lots.you may have to buy five movements to get one screw.but her prices are reasonable.

Link to comment
Share on other sites
Nucejoe Distinguished Member

Nucejoe

Posted
Posted

Have you gentleman IDeed the caliber and the name or a picture of the parts? 

I have an 18 liter bucket of parts and seriously doubt not having what all you need.

Please also give a full list of what you need to make it one sbipment.

Link to comment
Share on other sites
Nucejoe Distinguished Member

Nucejoe

Posted
Posted

Hi Andy, Not having checked my bag, I am sure I have got EB8800,  I got every part except the HS and possibly the fork. Do pins pallets break easily on those ? 

Ryan speaks of other issues too, like random stop of the balance.

Only one post office appraises for customs charges in Shiraz and that is thirty km away from this side of town where I reside in, finding all faults and all he needs saves me multiple shipments.

I think same holds true for you as well.

Regards joe

Link to comment
Share on other sites
Nucejoe Distinguished Member

Nucejoe

Posted
Posted
8 hours ago, RyanGreerMcGilloway said:

WOW! Thank you very much! That's the exact movement.

It prevents the stem from getting pulled out and its also critical component for the keyless works. 

And i dont have access to the 3d printer.

Its not an amazing watch but i like it. 

Set lever?

Link to comment
Share on other sites
HSL Distinguished Member

HSL

Posted
Posted

Just out of interesst, what does that second crown do? I've seen some Newarks with a similar solution but they had a Ronda 1223 in them and the second crown wound the alarm. But is there an alarm on the 88XX?

Link to comment
Share on other sites
HSL Distinguished Member

HSL

Posted
Posted
3 minutes ago, RyanGreerMcGilloway said:

The second crown has no impact on the movement and only locks the rotation bezel in place 

Ah ok thank you for the answer.
I found a 1223-21 in my treasure chest but no 8800 this far.

IMG_20190903_192815.jpg

Link to comment
Share on other sites
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • ManSkirtBrew
      1972 Bulova President "E" Sea King 11ACACB movement

      By ManSkirtBrew · Posted

      Oh nice. I have a similar wedge style stump for my staking tool, so I'll give that a shot. Thanks!
    • joelcarvajal
      Gamblin Gamsol for cleaning?

      By joelcarvajal · Posted

      Thank you all for the replies!  Very informative! True enough, the Gamsol took some time to evaporate and does leave a residue. So not all naphtha are created equal!  Need to find alternatives then. i was able to try Hexane recommended by Alex and it seems great.  I wonder what the cons are?
    • GuyMontag
      1972 Bulova President "E" Sea King 11ACACB movement

      By GuyMontag · Posted

      Yeah, I saw that in the tech sheet but I don't see how it can be adequately cleaned with the friction pinion still in place. I've accidentally pulled the arbor right out of the wheel once when I used a presto tool to try and remove it. Mark shows how he does it with the Platax tool. Those are a little too pricey for me so I got one of these from Aliexpress and I just push down on the arbor with the end of my brass tweezers. That usually gets it most of the way out and then I just grab the wheel with one hand the and the friction pinion with the other and gently rotate them until it pops off. Probably not the best way but it's seemed to work for me so far.    
    • Zedster
      Movement inserted from crytal side

      By Zedster · Posted

      Thanks, Jon Sounds like a plan. Obviously I'll have the face on so do you think gripping with the holder will create any problems, but I will check in the morning to see how feasible it is but I assume it only needs to be lightly held. As for holding the movement instead of the holder won't be possible in this scenario as one hand will be puling on the stem while the other pushes the spring down. That was my initial concern is how the hell can I do this with only one pair of hands. All the other times I've had to remove the stem hasn't been a problem, apart from the force required to release the stem from the setting lever, but now I need to fit the face and hands its sent me into panic mode. If it had the screw type release things would be a lot simpler but that's life 😀   Another thing I will need to consider is once the dial and hands are fitted and the movement is sitting in the case I will need to turn it over to put the case screws in. I saw a vid on Wristwatch revival where he lightly fitted the crystal and bezel so he could turn it over, is this the only option or is there another method?      
    • nevenbekriev
      Main spring

      By nevenbekriev · Posted

      Hi Jon, do You think that relation spring torque - amplitude is linear? I would rather guess that the amplitude should be proportional to the square of the torque. I had once idea to check it, but still haven't.
×
×
  • Create New...