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ETA 2892-2A/ Breitling B44 date change issue


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Good evening 

 

I have been asked to look at a Breitling Crosswind Special Big Date chronograph watch that is fitted with dual date discs on an ETA 2892-2A movement. The movement has the Dubois Depraz module on it. The issue with the watch is that the date changes two days at a time ie goes from say the 2nd to the 4th when the date changes before midnight. It does the same thing when manually changing the date so making sure it is not altered between the hours of 8pm and 3am you can set the date to say the 2nd then manually wind the hands forward using the crown and just as the date is due to change it jumps forward two days.

I have not had chance to look at the watch yet or take it apart but has anyone else had a similar issue with this calibre as it is a workhorse in many brands? Any thoughts as to what may be the issue with it would be greatly appreciated.

https://watchbase.com/breitling/caliber/b44  

http://www.breitlingsource.com/watch_details/Windrider_98.html

Many thanks

Andy

 

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I had an idea this morning that although the Breitling was changing date by two days at a time it is after all gust a gearbox in essence with a mechanical train and levers so what if it was just out of sink? I have had issues with clocks in the past that were out of sync and moving the hands backwards often solved the issue. I thought what have I got to loose before stripping it down. I wound the hands backwards for a total of two days worth of time and as expected the date did not move as it only goes forwards not backwards when moving the hands.

 

I then changed the date with the quick date change (1st click on the crown) and voila the date now changes one day at a time like it is supposed to. I set the date for one day behind the current date and advanced the hands to alter the time using the crown (position 2 on the crown when pulling it out) and the date jumped forwards one day when it reached nearly 12pm. Fantastic.

 

Thought I would let you guys know in case you run into this issue in the future.

 

Many thanks for the people who read my post.

 

Andy

 

 

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