Servicing The Legendary OMEGA Speedmaster '861'

Come along for their ride as we service and repair an OMEGA Speedmaster from 1969. This model is powered by the legendary OMEGA 861 caliber, the movement that came after the even more legendary caliber 321. We undertake a complete tear down and rebuild of the movement.
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To get in touch for servicing, restoration or repairs visit our website: www.precisionhorology.com
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[@BokiPetrovic88]

Hi, do you take the balance complete of the balance cock when you adjust hairspring? Thanks

[@notreallyachannel396]

Posting on an older thread and hope you see... I'm curious how you stabilized the lume? Does this involve adding another layer of binder to the back or something? Thanks in advance for your answer. It seems like this type of thing would be great to do on the old pieces I work on as a hobbyist.

[@PrecisionHorology]

Yes, we use a binder (glue) on the back of the hand.

[@WMIYC]

I’m having the same issue with the reset as here @17m. This is my first time servicing a Swiss lever chronograph. Mine resets, but the pin and stem don’t return to position. I have to slightly pull the (internal pusher)stem before the spring can push the pin back into position. The stem feels lightly jammed. I admit to not fully grasping how all works yet. Initially I thought it was related to me reusing the operating lever for the hour hammer, but I see others doing the same. The movement is nearly complete except for a bits on the dial side. Any tips?

[@_Peter_.]

Great work! The Omega Speedmaster Pro & the Omega Speedmaster 125th are 2 of my all time favorite chronographs! Thanks for sharing the video!

[@mikebruegger8654]

Waiting for the full service on the 321 column wheel version from that era. Hopefully in real time and complete tear down and assembly, oil.

[@SchrodingersPuss]

How can the movement be dirty when it was serviced the same year?

[@jordimartin4249]

It's so great ! Thank you for this video, explaining the very important details. I have a Lemania 1873 that is the same movement, but a have to wait and learn more being sure before working on it. It needs a service with a broken mainspring Regards from Catalonia !

[@Per-o2l]

Does it have the strait writing on the caseback Nice work👍

[@BokiPetrovic88]

Is there a reason why you assembled keyless first? Thanks

[@Skyler.Santana]

Thank you for making this video. I would like to get into watch modifications and eventually gradually start Watch service and restorations. Do you have any directions as to what are some things I can be doing? So far I have bought basic tools more geared for modding from DIY watch club using a NH35 movement. (I successfully changed the date wheel, hands,and dial to aftermarket seiko parts not given by the company) I’ve read practicing on a pocket watch works well being that the parts are bigger and easier to work with. I also want to try and disassemble and reassemble the movement. Any advise on good books, schools or things that has best served you in the past to help build your skills. Thank you in advance! 😁

[@PrecisionHorology]

It’s great to hear! We desperately need watchmakers. There is so much work out there but so few watchmakers to do it. Pocket watches are great, but I’d suggest a more modern movement like and ETA 6497 or similar clone. Big enough to work on but you still have spare parts you can access. KZbin is a great resource, but be selective about who you take tips from. There’s a lot of bad advice and things done wrong out there. There is a great book by Jendritzki called the Swiss watch repairers manual. Also, practical watch repairing by De Carle is very good. If you really want to go deep and study, you could always consider the BHI’s distance learning course. But stay tuned, I will have some exciting tutorials coming out in the future!

[@joshuareinoehl924]

Outstanding, more videos please 👏 🙏

[@skydernet]

Amazing, please share more videos like this.

[@pipodorologio1648]

thanks for sharing this...

[@timfox5341]

Thanks Ashton. Really liked the descriptions of some of the chrono parts. My 1861 speedy is about to head in for a service here in Melbourne (you fitted a sapphire case back to it a few years back). Shame you're on the other side of the world now!

[@PrecisionHorology]

Hey Tim, that is a shame! I hope you get it back in a reasonable time. Service centre repair times seem to be pretty long these days!

[@timfox5341]

@@PrecisionHorology Yep, taking it in to Michael Presser. He's booked out till November. He mentioned post lockdowns everyone has taken their pieces out of the draws and taking them in for a service. Happy he's busy and got plenty of work - hope you're in the same boat. Cheers!

[@boydsargeant7496]

I really enjoyed the video! Lovely watch!

[@PrecisionHorology]

Thanks! Glad you enjoyed it.