How to Service the Calendar System in a Watch

[@kyproset]

Really, Alex, this is the only horology channel I need. Everything is explained in detail and easy to understand.

[@johnleonard3806]

Agreed. Great site explaining the basics of how to do stuff. Not just watching someone do it.

[@johnpfeiffer112]

I’m so glad I found your channel. This is exactly the straight talk I need. Other guys make it look relatively easy. Then I tried and had a lot of questions.

[@watchrepairtutorials]

Me too. Let me know if you need anything. 🤙

[@Heuamoebe]

Amazingly helpful video. Thank you!

[@watchrepairtutorials]

Glad it was helpful!

[@hectorgarcia8691]

Very comprehensive and detailed, I can imagine that every watch part has its story and purpose of being. You must have a passion for watches. Thank you

[@watchrepairtutorials]

Glad you enjoyed it Hector

[@diemme568]

this playlist is amazing, and this video helped me a lot, in my very first hobby watch restoration ! thanks from northtern Italy!

[@watchrepairtutorials]

Awesome, thank you!

[@thegrassyknoll7792]

Always something to learn here, Thanks 👍🏻☺️

[@watchrepairtutorials]

Glad to hear that! I try brother.

[@dcamnc1]

Thanks for explaining the no date changes at night rule. I'd never heard it explained well before now.

[@watchrepairtutorials]

It’s the quick date change right. Even though companies recommend you don’t do it. When you look at the why they are designed, most are designed in a way so no damage occurs.

[@richardchinn4951]

Great video, could you do one on mainspring winders that always gives me fits

[@watchrepairtutorials]

Check out my video on servicing an automatic barrel and let me know if you need more.

[@So.Stephen]

Fantastic video Alex. The tip about lubing the individual teeth using the hold down stick is genius. 👍👍

[@watchrepairtutorials]

A very lite coat, very lite.

[@sergiohegner8844]

As already said your lessons are the most detailed ones I’ve ever seen here! Please keep on. Greetings from Rio de Janeiro-Brazil.

[@EliteProductions3129]

I literally got on old seiko with a broken calendar yesterday. Impeccable timing!

[@watchrepairtutorials]

That’s awesome. What caliber?

[@EliteProductions3129]

@@watchrepairtutorials It's a 6109, waiting on some tools to come in before attempting to mess with it.

[@billyg736]

In the middle of an eta7750 Alex and it was apparent about the time of date change, your info was perfect. thanks boss.

[@watchrepairtutorials]

✨✨ Get Your Copy of my eBook, The Secrets for Adjusting Watch Rates ✨✨ ➡➡PDF DOWNLOAD watchrepairtutorials.com/ebook/ ⬅⬅ ➡➡Available on Kindle & Soft Cover @ geni.us/4x8C (Amazon) ✨✨Watchmaking Courses and Training ✨✨ ➡➡ watchrepairtutorials.com/watchmaker-course/ ⬅⬅

[@rossjackson3670]

It's like watching Mission Impossible. So much depth. Great fun.

[@watchrepairtutorials]

It’s about to get funner.😜

[@user-tc3qd2pk6x]

Thank you, another great video! I wish I had watched this before breaking the tiny date jumper in a Seiko 7009...

[@watchrepairtutorials]

You and me both!

[@MrDavidoff36]

As always, a spectacular video. Now that I have learned to service eta 2824 and 2789, I am afraid to start working with Seiko...they have plastic gears in the calendar, but I am going to dare. I'm just a fan but I know other fans who are terrified of calendars. Greetings.

[@watchrepairtutorials]

You can do it! It just a watch.

[@genebouldin7898]

Really good video, as always! I'm totally hooked by your excellent explanations and easy demeanor! Very real, very easy to follow and understand. There are several good watch repair/restore content providers but you are now my go-to! Thank you for making this hobby become so enjoyable!!

[@watchrepairtutorials]

Wow Gene, I am honored. Hey man there is a lot more coming so thanks for following along.

[@grahamcohen3850]

Excellent video Alex. Exactly what I was needing. I just got an Omega quartz Seamaster f300 where the date wheel won't turn each night but it can be adjusted very easily. I read that this is an extreamly common issue on this model where the teeth on the wheel are plastic and wear out. Apparently there is a German manufacturer that makes replacements wheel with Steel teeth that solves this issue. Thanks again.

[@148DMC]

Thank you Alex I want learn as much as I can look forward to your videos

[@watchrepairtutorials]

Awesomeness. Glad you are here

[@walther9161]

Third time watching as I’m in the middle of a couple hobby watch’s day/date assembly’s So helpful and thank you for posting!!

[@watchrepairtutorials]

Hey man, Did you get it figured out ?

[@Gabriel-Abdala]

thank you, this one I really needed .

[@watchrepairtutorials]

You're so welcome! Thanks as always Gabriel

[@konavader]

Lube tip for calendar wheel got the like. Aloha

[@watchrepairtutorials]

I thought my bubbling personality would’ve been enough for the like!😄

[@konavader]

@@watchrepairtutorials Nah, that's why you got the subscription, take care.

[@TheBeardedWatchmaker]

Great Video again my man. Awesome advice on greasing up the date wheel teeth in one go. I never thought of that!

[@watchrepairtutorials]

That seemed to have went over well. The key is a very lite coating on the stick.

[@ronnyvanunen4768]

I was looking for how to fix the day date change at the same time as I cannot fix this by putting the wheels in the right position. So the date change comes first and later the day is changing. I am talking about Universal Microroter 72.

[@watchrepairtutorials]

That’s typically how they work. Look at the driving wheel that changes the day and date. Doesn’t it have 2 fingers? One to change the date and one for the day?

[@LarsC70]

Good tip how to lubricate the teeth of the driving wheel 👍

[@watchrepairtutorials]

Hey buddy, You are diving deep into the archive.🤙

[@LarsC70]

@@watchrepairtutorials Yes, there are always small details that I missed in the beginning, nice to watch again. Thank you for your grate instructions!

[@simeoncox566]

Great video. How about movements like Seiko and Orient that use either pushers or press in on the crown to quick-set the day function? How do they work?

[@watchrepairtutorials]

I should make a video. Thanks.

[@Supercruze]

Great vid as usual. Thanks for sharing your knowledge Alex. John S

[@watchrepairtutorials]

Hey John, good to see you again.

[@tomholloway7566]

Great job again Alex, thank you

[@johnleonard3806]

My first amateur repair job has a non functioning Day wheel. I found a loose piece in the case when I opened it. It is the 3 sided "cam" that sits on the smaller gear. I hope I can fix it. Thx

[@watchrepairtutorials]

Good Luck John. Let me know how it turns out.

[@sirbc]

Thanks, this was a very helpful video. What is the blue grease you are using when lubricating the teeth of the date indicator wheel?

[@watchrepairtutorials]

That was 9504. Mobius

[@williambarker263]

Another great video. Thanks Alex!

[@notreallyachannel396]

Do you think that using a piece of a plastic drinking straw might be a good substitute for the plastic stick for greasing the teeth? It’s a great method, no doubt, but ’m just thinking that I would prefer to throw it away rather than to clean the grease off. Can you think of any reason that this wouldn’t be a good idea? I have a calendar works to assemble tonight and I’m going to use your method to hear the teeth. Thx!

[@watchrepairtutorials]

Should work fine. Just remember, you just need a thin coating.

[@peerhauser]

I'm really grateful for your videos and also became a patron. I'm fairly new to watchmaking but in this video lubricanting the date wheel didn't feel right. Are you sure to lubricate something that is never part of the cleaning process?

[@watchrepairtutorials]

Thank you for your support Peer. I would clean the teeth of the date wheel off with a little IPA and a Q-tip and that’s about it. As you know you don’t wanna clean the date will in any kind of machine, but it still needs to be clean, right. Date wheels off and pick up residual oil from the movement so you don’t want to put that into a freshly cleaned movement that you’re servicing. Plastic parts don’t get lubricated, but many date wheels have metal teeth that interact with the date jumper, which is also metal so anytime you have metal on metal friction do you want a small amount of lubrication. The key here is a small amount of lubrication.

[@peerhauser]

@@watchrepairtutorials never thought about plastic parts picking up dirt from elsewhere anyway, good point. Thank you for clarifying. And thank you once again for your valuable effort to enlighten watchmakers around the world.

[@hotpocket84]

I loved this video . I do have a question though. On the ETA 2789 movements with quick set, I can get the day and date to change by advancing the hands, and it changes perfectly at midnight, but if I advance the hands and stop at 11:55pm, the watch will run past midnight and nothing will happen. Is there some point in time where the mechanism needs to start from in order to change the calendar organically?

[@watchrepairtutorials]

Are you saying that if you wind the watch past 24 hrs the date changes but if you wind it 23 hrs and 55 minutes and let it continue to run on its own the date will not turn over?

[@rolandthomasset1713]

Great video as usual but my Tissot Pr516 Gl has a different set up for the day change. It looks very straight forward and easy but….surprise ! Help ! I can’t figure out to set it up.

[@watchrepairtutorials]

How’s it coming did you get it figured out yet?

[@rolandthomasset1713]

@@watchrepairtutorials Good morning ! Yes, Thanks to you and many photos I took I’m in good shape with my “day indicator” in place. Note easy on this model . The wholething moved forward this AM ! Will figure out the rest I believe. Thank you again . I must move my day ahead by 3 days to be in sinc.

[@watchrepairtutorials]

@@rolandthomasset1713 perfect

[@ramazanbaris2349]

I have spent twice as much time on understanding the calendar works on a watch even though there are lesser parts involved. I think it is because of the sensitivity of the parts on the dial side that it requires much more practice to handle them with surgical care

[@watchrepairtutorials]

Did this video help at all ? The calendar works can be fiddley at times

[@411sergey]

First sank you about your videos. And may I ask the question : I have seiko presage ssa393j1 which has smole calendar hand on the lover part of the diale. So das it has this regular seiko plastic part to cheng date, or another way ?

[@watchrepairtutorials]

Надеюсь, это ваш родной язык и я вас не обижаю. Колесо из латуни, меняющее дату.

[@fishandreptileinfo]

Hi Alex, Could you possibly help me. One of my watches has the winder, a button underneath that, and a button over the winder. The top button changes the date. However, now it's stopped working. Ive opened the watch and noticed when you press the date button, it presses a small lever. This lever stays down (in) when pressed. Does this mean that the spring ? (if it has one) has either broken or come off. Being brand new to watch repairs, I don't want to mess with things until I have a bit more knowledge. Could you possibly help. Thanks in advance. Martin (UK)

[@watchrepairtutorials]

well, it's possible that the spring broke depending on how old it is, but it could also just be sticking from the old grease being dried up. I call that "Stiction . The only way to know for sure is to open it up, inspect the parts, clean them and see if it works.

[@paulleate5768]

hi alex, very helpful video thank you. would you mind helping me. just seviced my first calender watch,but the date changes at 9.15 ish as opposed to midnight at 12 ock. is this just a case of turning until the date comes on the change and then resetting the hands at midnight? any help would be briliant thank you .

[@watchrepairtutorials]

Yes, once you’re date changes over at that instant is when you put your hand on, run it around 24 hours make sure it lines up then put your minute hand on

[@SMerlin73]

Thanks for the video, now I understand how the day/date function works a lot better. I have a question about my seiko 7s36a if you don't mind answering. I bought it new and have had it serviced only once but I'm planning on servicing it myself when I'm more experienced, anyway at midnight the date changes but the day doesn't change until about 3am. It's always done this, is it normal or can I change it so they both change around midnight? It's not important, it's just always kinda bugged me.

[@watchrepairtutorials]

No you can’t change it. It’s just the way they are made.

[@SMerlin73]

@@watchrepairtutorials ok, thanks for getting back to me. I thought that might be the case. btw, I've really been enjoying your videos and am learning a lot about watch repairs.

[@watchrepairtutorials]

@@SMerlin73 thanks for playing along with me. It’s nice to hear that. All this work is helping someone.

[@awdturbopowah773]

Another amazing, helpful video from this channel. I've never seen the tool you used to hold down the jumper spring, that you said is usually used to hold down setting levers so a stem can be pulled. I need to add it to the tool list 😂. I can't seem to find it just Googling areound though, is it a widely available tool, or something that was custom made? As always, thank you for everything you do Alex!

[@watchrepairtutorials]

It’s a watch band pin pusher. www.esslinger.com/watch-band-pin-pusher-set-of-10-pins-with-wood-box/ Good for all kinds of stuff.

[@awdturbopowah773]

@@watchrepairtutorials It looks like it would be a great addition for sure. Thanks for the link!

[@jimron9008]

hello WRT. I have the common issue of early or late date changes in 2 of my watches (1 auto 1 quartz) but what I've noticed is that the date changing process has become prolonged since the problem started. for example it used to take 1-2 hours and now it takes 3-4. What could be causing this problem? Thank you!

[@watchrepairtutorials]

Loose hands can be one reason. The time for the date change is determined by the hand position. When setting the hands you turn the crown until the instant the date clicks over. Some date indicator wheels are spring loaded, some take a couple hours. But the moment the date change happens, you set the hr hand, then check it to make sure it’s right, then you set the minute hand.

[@jimron9008]

Thank you for your reply! 🙂@@watchrepairtutorials

[@watchrepairtutorials]

@@jimron9008 no worries

[@Gabriel-Abdala]

Thanks!

[@watchrepairtutorials]

Welcome my friend

[@GDLOTKIDOG]

I have a brand-new SW 100. It is an ETA2671 compatible movement when I use the hand setting position and turn the crown towards me and I keep turning, and I keep turning the date that’s not advance. I was hesitant to try to use the quick change date setting not knowing what point, the function was about to go on, I did take the chance and the chains gate setting works perfectly, but when I advance the hands there’s no change. This is really driving me crazy. I’m not sure if I got a faulty component although I would I would guess not because I ordered it from Switzerland. It came her medically sealed and brand-new ready to go and what are you guys think why is the date advancements not happening when I manually turn the hands?

[@watchrepairtutorials]

Is the hr wheel installed and seated into motion works?

[@GregJGreen]

Hi Alex, hope you're doing well. I've been having one issue after another since I had my 1988 DJ serviced last year. I noticed the date wheel moving slightly when I manually wind it. Not sure if it's been happening all along, but it doesn't seem like that should be the case. Any thoughts on it would be appreciated.

[@watchrepairtutorials]

What’s a DJ ? What movement is it?

[@GregJGreen]

@@watchrepairtutorials Datejust 3035.

[@watchrepairtutorials]

@@GregJGreen ahhh. It’s a known problem with 3035 that the date wheel is a bit touchy. More than likely there is damage to the teeth that’s causing the issue. The teeth are under a lot of tension and wear is pretty common on these older movements. Who serviced it.Rolex ?

[@GregJGreen]

@@watchrepairtutorials thanks, Alex. I'm not sure if it was sent to a RSC or worked on by a certified Rolex watchmaker elsewhere. Took it to Ben Bridge in Lynnwood, WA in July of last year and got it back in December. I got a Rolex service card but no book or receipt with a Rolex letterhead, so I think it was likely a Ben Bridge watchmaker certified by Rolex. The movement felt too tight when manually winding and I had a hard time getting the crown to screw down properly, so I took it straight back and waited another 4 months before it was ready. I believe Rolex would have replaced anything that showed signs of wear. I was charged $940 for servicing, it should have come back right the first time. It's unacceptable either way, so it's going back yet again, and I'm going to get to the bottom of who serviced it.

[@watchrepairtutorials]

@@GregJGreen ouch and what a pain in the ass. Just ask him to take a closer look at that date ring because that’s probably where your problem is. Good luck brother

[@1959Berre]

What do you mean by 'inneract'? How can a wheel act inside of itself?

[@watchrepairtutorials]

Interact, I am sure I was saying interact

[@achuck4321]

Alex, did KZbin force you to change your channel name? 😅

[@TheBeardedWatchmaker]

Hahahaah, I think it was hard to remember the amount of stars you had to type to search for his channel

[@watchrepairtutorials]

No, my Mother did.

[@eamonmolineux340]

I asked you about you course on line is anybody omit and there any review.

[@watchrepairtutorials]

I responded to your previous question. I am not sure why you did not receive it. The course is still new, so there are no reviews at this moment. There are people signing up for it though.

[@jame17]

What if it's just the day change button that doesn't work?

[@watchrepairtutorials]

It’s relatively simple James. It’s obviously will be different depending on the movement but I would suggest looking at the calendar system with the day Will removed press the button and trace the parts backwards to see which one is not operating correctly.

[@rosomak8244]

Alder SEIKO 7009 movements will break when you set the date at the wrong time.

[@watchrepairtutorials]

There are some movements that don’t have protection for sure. That’s why new watchmakers should study the parts to see how they work.

[@weerobot]

Moonphases ??

[@watchrepairtutorials]

What about them ?

[@weerobot]

@@watchrepairtutorials Show how they work...One day...

[@amandagelien9612]

Then they come to you and say I DID NOT FORCE IT!!! It just broke!!

[@watchrepairtutorials]

I know, that is so true. Good to see you Amanda.