This Tissot Seastar also belongs to Michael. He bought it and it was DOA. Only one thing for it …
There is a fair amount of dirt in here, and that’s good enough of a reason for the watch not to work.
This is the calibre 2481, with the first incarnation of the quick-set date which requires pushing the crown in. The quick-set mechanism was modified in subsequent versions, and doesn’t work that well on the 2481.
There is dirt throughout, and it’s probably been some time since this movement has seen a service.
No rust or obvious damage. I’ve removed the balance jewels, and work my way through the bottom plate.
After all the parts have gone through the watch cleaner, I reassemble the movement again.
Top plate done, and the balance is swinging.
Only half wound, this is looking very good!
Starting on the bottom plate, I notice that a leaf of the cannon pinion is missing. Time to order a new one …
Now I can reassemble the bottom plate.
Bottom plate complete bar the hour wheel.
The movement goes back into the case.
The case back gets a new gasket.
With new case screws (the old ones were missing), I put in the auto-winder assembly and close the case.
Final check on the timegrapher – I’m happy with that!
I was given a Tissot seastar with a 2481 movement (when I was a teenager) which I dropped and broke the quick change date function a couple of years after I was given the watch. I have had the watch serviced and repaired at least 4 since since then (the last repair was a week ago). Each time I get the watch repaired/serviced I am always told its impossible to repair the quick date function. I was just wondering why it is so difficult to repair the date function on this watch.
You most likely need a new plate (or a complicated repair to the plate) and some parts that are hard to come by.
thank you for your response
Tenho um tissot 2481 e a mola que avança o calendário manualmente está partida poderiam informar onde encontro uma.ou qual a referência da mesma.
Atenciosamente
A.Cardoso
Good morning Christian,
I have 2 2481 for repair at the moment. I have just one question. One model is a one piece case with a pull out crown and stem. Would the winding pinions be identical?
Thanks
Kind Regards
Don Clark
Hi Don,
Yes, the winding pinion will be the same.
Best regards,
Christian
ETA 2481 cannon pinion
Very nice job! I have a 70s Seastar myself with this same movement – it could probably do with such a service too, since there are some signs of dirt in mine as far as I can tell with my relatively inexperienced eyes… but it’s a really fun watch!