[TECH] - Installing BARREL Arbor Jewels on SEIKO 6139

In this video I show the procedure for installing my barrel arbor jewel sets for the SEIKO 61/63 series movements.
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[@IBNR1]

This is now THE reference instructional video on how to perform this critical repair job on a whole host of vintage Seiko movements, and the perfect companion to the jewel sets you offer for sale. Thank you very much for taking the time to provide such an excellent tutorial!

[@hal0eight]

Glad it was helpful!

[@andys5482]

Just ordered a set 👍👍

[@boydsargeant7496]

Amazing! I love watching your proper watchmaking! Much much more than simple disassemble, clean and oil servicing! Amazed you do it all on camera! Keep these gems coming!

[@hal0eight]

Thanks!

[@andrewpeterwhatsonmybench1383]

Hi, I have just fitted one of your jewels and replaced top Bush with a new old stock bridge. So smooth when turning barrel. I do not have a jeweling jig, press, tool. So all was done by hand, 1.6 mm reamer hand held and a micrometer to seat the jewel, then I fitted barrel and bridge to check it was true, it was not. From the back,, face I was able to position jewel and fix. What a lovely sensation when rotating the barrel. 6139 6012 now up and running.

[@hal0eight]

It makes a huge difference, hence the small bump in amplitude.

[@johnjenin3279]

I know the vid is two years old by now, just found it, thanks for the in depth info on reaming. And I subscribed

[@hal0eight]

No worries! I'll probably do another one soon with more tips and tricks as I have a few new ideas on the matter since then.

[@Petruccio1881]

Thank you for fantastic video. Could you please tell me what is the jewelling tool brand name you are using and where to buy?

[@hal0eight]

It's a "FAVORITE" brand tool. Probably not made since the 1970's, so you have to buy used now.

[@GearedTowardsObsession]

What a fantastic tutorial, thank you.

[@hal0eight]

No worries!

[@alexj6408]

Meanwhile I'm hating myself doing this with hand cutting broaches and a staking set 0.o. It's just not worth it for me to invest in the tool. A few broken jewels is acceptable for me haha. It certainly gives appreciation to the delicate nature of the job. Thanks for posting the video VTA, great to see how the pro's do it :)

[@hal0eight]

Thanks!

[@markjh2005]

Hi Adrian, really enjoy watching your work. Have tried to contact you on your website about getting a watch services but have not heard back from you. Hope to hear from you soon. :)

[@InTimeMiami]

Dang I never knew there was such a big following behind Seiko repairs. Great job! Did you make that holder yourself?

[@hal0eight]

It's huge. Yeah that's a 3D printed movement holder.

[@mariosantoniou9706]

what are the dimensions of the jewels?

[@paulsteele2225]

Did you ever considered using self lubricating sintered tungstan arbors, these would have the same coefficient of friction as synthetic stones but, are alot easier to handle.

[@hal0eight]

I have thought about alternative materials but as the data is well established on corundum vs polished stainless steel, it's probably not worth trying to reinvent anything. e.g. I don't know what will happen over 20 years etc.

[@jeffreyalbarandorivera8595]

Why do you need to bore that area and put jewel?. You avoid tear and wear but you add the hole size..What happen? Why seiko did not advise that way?.

[@hal0eight]

I think you missed the point of what is being done here. SEIKO didn't advise anything. What I'm doing here is installing jewels on both sides of the barrel as these movements are prone to very serious barrel arbor wear after 50 years of service. The jewels fix the problem permanently.

[@cmb1972]

Excellent video, I do plan to retrofit jewels in my collection, but need to get the correct tools first. Please could you list the tools required, Thanks.

[@hal0eight]

Geday, As I mentioned in the video you need a jewelling tool set. The most common is the SEITZ set. The reamer is in the set, 1.59mm. I use a 6mm stump. I also mentioned that retrofitting isn't really an option due to the swarf, it needs to be done as part of a service.

[@cmb1972]

@@hal0eight please could you let me know what the Cousins part number for the deburring tool is as I cannot find it, by 6mm stump do you mean anvil as Seitz only seem to supply a 5mm one?

[@Supercruze]

Thanks for showing your arbor port jeweling techniques Adrian. I have found that 159 reamers may be slightly different diameters when comparing vintage to new. Have you found similar situations in your experience?

[@hal0eight]

Yeah I have. That's one of the reasons for this video I used a brand new one. Especially on older sets, you never know what they've cut before so they might be off spec.

[@skydernet]

@@hal0eight Where to buy the correct reamers for 6138 and 6139.

[@MDVH92]

There's no need to adjust the jewels for arbor end shake once they are installed? Thanks for these videos! I'll hopefully upgrade a couple of 5606 movements with your arbor jewels.

[@hal0eight]

No. On this movement, they were designed to have the jewel face flush with the side of the plate that faces the barrel. You have to remember they were designed to be churned out by robots of the 1960's, so tolerances are on the loose side. A bit of slop is OK. SEIKO's run better with slop. I rarely close the holes on the barrel covers as I get good results almost always.

[@MDVH92]

@@hal0eight makes total sense. I never thought about it. It would be very interesting to see a technical drawing from Seiko to see what sort of tolerances parts were designed with. I guess manufacturability was high up on the priority list.

[@BokiPetrovic88]

Hi, what size of countersinks should I get? Thanks

[@hal0eight]

Just buy an assortment, they aren't absurdly expensive.

[@buchnoun]

Hi adrian, what are the spec of those jewels, is it specially made for this or is it just jewel holes ?

[@hal0eight]

Custom made for this movement. There's no generic jewel holes available that do the job.

[@MsAppleseed]

Hi Adrian, What is the size of the reamer that you use for the lower arbor port jewel? Also, after jeweling the port will I need other lubrication than Seiko S-4? How can I contact you to negotiate purchasing some jewels from you?

[@hal0eight]

The lower reamer is the 1.59. I don't use the SEIKO lubricants as they are garbage and hard to find. The standard replacement is Moebius HP-1300. All sales through the ebay store at present as it makes life easy for me.

[@dhc4ever]

Can anyone else hear AVE in the ether screaming FOCUS YOU ....

[@hal0eight]

I've been told that before!

[@hariowen3840]

You say the reamer is brand new and then you immediately cleaned the brass off it. How did the brass get onto it if it was brand new?

[@hal0eight]

The friction and heat from the reaming process melts brass onto the reamer.

[@hariowen3840]

@@hal0eight I know that VTA, I watched your video. But you said that the reamer was 'brand new' (never been used presumably?) You then immediately go on to clean melted brass off a 'brand new' reamer??? - did you really mean therefore that it was only 'almost' brand new??? (See what I mean? - good video though.)

[@hal0eight]

@@hariowen3840 The definition of "brand new" in this game is pretty flexible. So I think, from memory, probably used once before, so that would count to me as brand new. I mean, I think the video was on it's second take or something. My other reamers are at least 50 years old.

[@hariowen3840]

@@hal0eight Got you VTA. I'm taking an interest as my Son has recently decided to get my old Seiko Pogue, which I bought in the 70s, cleaned, serviced and new crystal, the guy doing it, Simon Wilkinson UK, has recommended jewelling the barrel arbor bushes.

[@erbalumkan369]

Anyone in the Netherlands who can do this for me on a 6139?