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ETA 2836 Clone Date Wheel Falling Out

Bopmd

By Bopmd
in Fault Finding / Fault Diagnosis

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Bopmd Watch Enthusiast

Bopmd

Posted
Posted

Hello!


I am currently repairing a cheap watch for a friend with an ETA 2836 Clone in it. When turning the datewheel, it hops out of it's position through the notches in the part above the jumper spring. What can I do to prevent this? I've worked on several real ETAs and not had this problem. May it be the quality?

 

The photo shows after it has jumped out.

 

Thank you very much in advance

 

Best,

Mathias

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B52 Member

B52

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What I can see is a new date ring glued over the original date ring. Unglue new ones and re-glue it at the right position. Date ring jumping is mechanically dependent and cannot be fine adjusted. Might be your movement is designed for 4 o’clock date instead for 3 o’clock. That can happened in China. Who cares...? Is cheap? Is. Dot.

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  • 4 weeks later...
anilv Distinguished Member

anilv

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1. check if the datewheel is flat.

2. Check if anything is sticking up on the main plate and applying upwards pressure.

3. increase the jumper spring tension a bit.

4. check the jumper spring sits flat and is not creeping under the date wheel. I just did an ETA2836-2 where the day jumper was slightly bent upwards and this caused the daywheel to rise a bit. This caused the day change to stick with the dial installed (works smoothly with dial off). The day jumper on your watch looks a bit high as well. Check that it sits properly and the jigsaw piece fits it in respective slot.

Good luck!

Anilv

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