Day Date question on Seiko 6139B

[jguitron]

Hello everyone,

I was able to put together a 6139B with properly working chrono, time and date.... but the issue is that the DAY changes at 6PM rather than MN! It works properly skipping the non-chosen language but it changes 6hrs too soon. Otherwise all is good, pushing the crown all the way in advances both day and date, half way only date... I wanted to get your opinion before embarking on to disassembling the calendar mechanism.

Thank you!

 

[nriddell]

Jguitron - Before you put the hands back on the watch, did you advance the winder / time until the point when the date just clicks over to the next day? If you did not do this part, the position of the hands will not be synced up to midnight.

[noirrac1j]

@nriddell is right. Advance until the date just turns over, then keep going to see how far till the day turns over. Usually doesn't turn over till some time (sometimes 2 hours)  after the date changes, but it shouldn't be so off synch. Once you have the day turning over sometime after midnight, go ahead and advance until the date just turns over, then place the hands. Also, make sure the watch isn't running while you try to place the hands! 

 

JC

[Ishima]

There's only one time position that exists (pragmatically speaking) without the hands and dial and that's midnight, which is whenever the calendar changes. Set the hands to 12 when this happens. 

Edited December 14, 2016 by Ishima

[rogart63]

They work like this? At midnight the date should shift. And after a couple of hours the day shift to the non-chosen language . And after that the day should shift to the chosen language . If it's to soon you should set the day to the next day? 

[jguitron]

Thank you all for your replies!

Agree, I forwarded time until the date advanced and then noticed that the day change too longer, but didn't make much of it as I'm used to the 2-3 hour delay on my other Seikos... so I set the hands based on date. Now that it's all put together the delay between day and date changes is greater than the usual 2-3 hours... it work properly, but not coordinated with the date.

The tech-guide shows the 6139A which is actually a bit different than the later B version. In addition, my version has both date and day fingers made of plastic. I haven't been able to find any pictures of my specific setting to check that all is looking as it should.

I'll post back if I find what I did wrong...

 

Thank again!

 

[rogart63]

Could you have put the little tab on the wrong side of the dayfinger?  

[anilv]

If i remember correctly, the date/day 'fingers are two plastic fingers which sit on a metal gear/disc. There are pins on the plastic finger things which interacts with each other. if not fitted correctly this could result in the problem you have. FWIR the day finger has a pin which slots in a groove/slot in the plastic date finger/disc.. get it wrong and the day/date wont change correctly.

Anil