Service + Repair: Rolex Oyster Tudor calibre 1156

IMG_9896Despite the “Rolex” on the dial (which refers to the case), this is a Tudor watch, as it has a Tudor movement. Philip sent it in, and it has a couple of problems – you can wind it, but it doesn’t run, the crown doesn’t screw down, and there are some hairs under the crystal.IMG_9899

The most likely cause for the movement not working is a broken mainspring, and that’s easy to fix. The movement will need a service anyway, and I got to sort out the crown.

The pendant tube thread is fine, which is good, so we only need a new crown. There are two choices: original Rolex for £180, or generic for £18. Factor 10, and Philip makes the same choice that I would have made. You can always buy a Rolex crown later if you feel like it, but the difference of £162 will pay for a lot!


Time to take the movement apart. I start off with the bottom plate. IMG_9908

Now it’s time for the top plate. You can see that I have already removed the balance jewels.IMG_9912

The gear train.IMG_9915

As I thought, the mainspring is broken. I would have replaced it, anyway, so no big deal.IMG_9997

The new mainspring.IMG_9998


I start by putting the balance jewels back in and oiling them.IMG_0001

The gear train back in place. There is a bit of oxidisation on the click wheel, but that won’t affect anything.IMG_0002

A great little movement. The escape wheel has two cap jewels as well, so we really don’t have a huge difference to a Rolex movement – apart from the level of decoration.IMG_0005

The bottom plate is back together.IMG_0006

Dial and hands back on.IMG_0044

I press the bezel over the new crystal.IMG_0045

And now I can case the movement.IMG_0046

Good performance!IMG_0047

Now everything is back together, I waterproof test. I have a slight loss (10% in one minute), and that probably comes from the oxidised case back. I did clean that up as well as I could, but 10% isn’t a big deal. The watch will be fine for doing the dishes and taking a shower, just not for diving.

IMG_0051A great looking watch – I like that black dial very much.


23 thoughts on “Service + Repair: Rolex Oyster Tudor calibre 1156

  1. I was awarded a Tudor Prince quartz in Mar 25, 1989 inscribed on the Tudor clasp. It has worked faithfully since that date. However a few years ago when I had the battery replaced the dial change color for blue to brown (tan). This has made it difficult to read. This has the original Oyster case by Rolex Geneva. It has the gold steel band. Would you be able to tell me why the dial changed color.
    Thank you.

  2. Great write up, I’m in the US and just got a 7934 Tudor with 1156 movement from ebay.

    It has the same issue of the crown not screwing down, The watch will wind maybe one time and start moving but won’t let you wind past that. Question is, do you know what is the correct crown and tube size for this watch? Not expecting a response but if so, any help would be much appreciated.


    Here’s a link to the watch:

  3. Hi my mum has a 1973 tudor royal solid gold watch with a gold bracelet but I cant really read the codes as they are tiny. The winder no longer works. It has NEVER been serviced. We only got 40 years service….Do you think it would be worth getting repaired? I don’t think that it would be valuable.

  4. Hi Christian,
    I’ve literally just picked one of these up with a cracked crystal. Just wondered what crystal you used for the replacement and where I might get one in the UK. I am assuming it has a tension ring?

    Cheers Russ.

  5. I would like a quote for repair of a tudor prince watch purchased 1992/3.
    The watch has suffered moisture damage and the movement is partially damaged, the dial & date disc are damaged by moisture as are the hands.
    The bracelet is worn and strained and the glass is incorrect, it should be a sapphire glass.

  6. I really appreciate this site. Thanks very much for the perfect photos and the breakdowns of the movements. I am a mostly self-taught enthusiast who works primarily with pocket watches. I paid 25 cents U.S. for a broken Tudor Oyster with an 1156 movement that I found in a box of books at a book sale. I’ve taken apart the movement and found that it has a broken setting lever spring. Any idea where I can find one of these? Thanks very much.

    • Hi Gerry,

      Tudors have standard movements, so check out the calibre number (should be close to the balance, you might have to take that out), and you can order your parts from

  7. Thank you for this post. I love Tudor watches, including the newer ones. Can you provide information around the size of the watches you service? It is always difficult to guess, especially with older ones. Best, Jean-Luc

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