how do i open this tiny seiko barrel?

[mattlikesvintagewatches]

Hello, 

this movement seems kinda unpopular because not a load of results for it pop up. It’s labeled as a 2220A, whatever that means. I’ve dealt with a seiko style barrel before, but this one has 2 seems and I don’t know which one to pry. 

 

I did see another post about this barrel type and oldhippy said that you’re supposed to buy new ones instead of dealing with cleaning it, or atleast that’s the way I understood it.

 

any help is appreciated. Thank you.

[SwissSeiko]

its the seam on the brass side. Seiko does want you to replace them, but for the 2200 series they are hard to find now. you can open it and service it.

[oldhippy]

 You are correct that is when parts were plentiful. These days you have no option but to open them. Look at the side and you will see a very thin mark around the barrel, you need a very thin blade a razor blade is best to open it. Be careful with the teeth and the cap as it is thin you do not want to distort it.

Edited July 9, 2024 by oldhippy

[HectorLooi]

When I had my compressor set up, I just used my compressed air gun and pump air around the gap between the arbor and the barrel, and the the cap would just pop open. Have a look at the video below on how to do it 

Now that I've retired, I use a brass rod to pry the cap off.

 

[Neverenoughwatches]

11 hours ago, HectorLooi said:

When I had my compressor set up, I just used my compressed air gun and pump air around the gap between the arbor and the barrel, and the the cap would just pop open. Have a look at the video below on how to do it 

Now that I've retired, I use a brass rod to pry the cap off.

 

The compressed air is a clever idea.