Diesel Watch DZ4343 randomly stopped inconsistently / intermittently

[Jordanwrx]

Hi Team,

Need some help, I have replaced a new battery on the watch.

It works but then randomly it stopped and displayed a wrong time,  then you adjusted again to the right time, after 24 hours, wrong time displayed.

 

Can you please give me some advise, what to do ? things to try.

 

Thanks for your help

 

 

 

[watchweasol]

Hi does it stop at the same time each time or does it differ.

[watchweasol]

Hi  Whats the caliber number   just below the word japan VD67    ?   .

I have attached the service document for the VD57.    Did you do the reset shorting the ac point to the +ve side of the battery as per the procedure.  If not read the documents and do so to reset the watch.       cheers 

Hattori VD57B pg 1-5 (1).pdf Hattori VD57B pg 6-10 (1).pdf

[Jordanwrx]

Hi watchweasol, 

Not at the same time, it differs 

[watchweasol]

Hi Jordan   Did you do the reset as per the manual and,  what is the caliber number, was my guess right?.  If it is stopping at random it is possible there is some dirt in the movement dried up lubricant etc, If so the only answer is to dismantle and clean the movement or replace it that is why we need the caliber number. That way we can trace another and get a approximate cost. 

[Jordanwrx]

Hi Watchweasol,

 

I did reset the AC, I will see how I go,  I think is still delayed,  I will update you soon. 

It seems to stopped at nights.

How do you find the caliber number ? I have attached another photo, is it on the back of the case ? no writing inside the case I checked.

 

 

[Jordanwrx]

Also,  could it be the mechanical rough that needs to be sprayed with WD40 or some lubricant etc..

 

[Jordanwrx]

I just noticed , after reset, it didn't make a different.  have attached a video, caught it when it pauses 

[jdm]

4 hours ago, Jordanwrx said:

I just noticed , after reset, it didn't make a different.

The reset is just to realign the chrono hands, does not fix a faulty quartz module. You can have it replaced or try that yourself with hands removing and refitting tools.

[Jordanwrx]

Thanks jdm

[watchweasol]

To Find the calibre number remove the back and on the silver movement cover plate there will be a number like VDxx or VDxx or such like.    and NO WD40 at all.

[jdm]

7 hours ago, watchweasol said:

To Find the calibre number remove the back and on the silver movement cover plate there will be a number like VDxx or VDxx or such like. 

Visible in the picture,  it's a SII VD57C.

[watchweasol]

Figured that out . the OP already has the sheets on a previous post, it was an instruction to the OP where and how to find the caliber number and what it looked like as he was unsure.

[xyzzy]

Looks like it's related to the date change.  Maybe someone set the day between 9 PM and 3 AM?  Not supposed to do that, as it damages the date driving wheel and possibly the hour wheel.

Now it's catching at the date change.  If the hour wheel is damaged, it might do the same thing at the same hour on the morning too.

Or, it could just be a weak battery and it isn't able to overcome the date jumper.

[jdm]

6 hours ago, xyzzy said:

Maybe someone set the day between 9 PM and 3 AM?  Not supposed to do that, as it damages the date driving wheel and possibly the hour wheel.

That problem doesn't exists in modern watches, but sometimes is still mentioned in the owner manual. 

The date wheel is protected from conflict with the quick change by finger being retractable, either as is made of flexible plastic, or with a small spring if a brass wheel. On Seiko, the first system is used, see my video below. 

https://youtu.be/9EuHG1bYPKs

[xyzzy]

That small plastic finger fatigues, then bends too far out, then gets wedged when it tries to turn the date wheel.  This then locks the hour wheel and damages the hour wheel teeth at the point they are driven.

[jdm]

59 minutes ago, xyzzy said:

That small plastic finger fatigues, then bends too far out, then gets wedged when it tries to turn the date wheel.  This then locks the hour wheel and damages the hour wheel teeth at the point they are driven.

That has never happened to me during the repeated testing I have done of this useful function, and it has been never reported, at least on this forum. Of course, you're welcome to have a different opinion on the matter.

[Jordanwrx]

Thanks jdm, watchweasol and  xyzzy

[LittleWatchShop]

New movement...23 bucks on eBay.

[Jordanwrx]

yes that's the way to go

[xyzzy]

On 4/14/2021 at 2:52 AM, jdm said:

That has never happened to me during the repeated testing I have done of this useful function, and it has been never reported, at least on this forum. Of course, you're welcome to have a different opinion on the matter.

Seiko date driving wheels with bent fingers:

Close up of one of the fingers:

Where the hour wheels get damaged when the date driver jams them and the minute wheel continues to turn:

Is this happening due to the date ring pushing the finger and bending it?  I suppose I don't know for sure.  But the manual says not the do that, it clearly causes the little plastic finger to get moved when it's done, and then we have these date drivers with damaged fingers.  Maybe it's something else that causes it?  But my suspension is the data setting.

[jdm]

On 4/16/2021 at 2:43 AM, xyzzy said:

Seiko date driving wheels with bent fingers:

Are these from a quartz module similar to OP's one? 

My assertion comes from observation and testing of the day/date driving wheel used on the 7S/4R/6R family (sorry for the mediocre pic). 

First, it's made of somewhat flexible plastic, the kind that one can deform a little and will return to the original shape. 

Then, the fingers are designed not only to push the teeth of the calendar ring or disc, but also to be pushed back from the same without breaking. Their tips are shaped so to recess inward and make the point where it attaches to the body, which is thinner, to flex exactly there.

A clever well executed and proven design that surely saved trouble to many owners. 

[xyzzy]

15 hours ago, jdm said:

Are these from a quartz module similar to OP's one? 

They are from various quartz Seiko 7Txx movements.  I've not disassembled a VD57 but it's likely similar.

Certainly I've observed the action of setting the date when the finger is in the way, and it's pushed down and doesn't appear to break.  I suspect the plastic fatigues from age and repeated stress eventually.  Or maybe if one does it at just the wrong position, and the plastic is not as slick as it should be, the tip of a date ring tooth will jam against the tip of the date driver finger.

[Jordanwrx]

i see, thanks xyzzy.  Possibly from repeated stress