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VSF Sumbariner VS3235 date jump

Luxfer

Renowned Member
5/5/24
641
852
93
Italy 🇮🇹
Hi everyone,
I received today my VSF sub date with VS3235 movement and I immediately found out a problem. The date will jump randomly 2 day at time. Let me explain better.
Randomly the watch will go from date 1 to 2 but after go from 2 to 4 then 4 to 6 etc. I’ve Done a full circle and in the 31 days of testing circle that I did it only took 3-5 regular shots, all the others took 2. does anyone know how to solve this?
 

dogwood

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7/9/21
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The problem could be one or a combination of a few things:

  1. The date jumper spring is too weak. This is the spring that arrests the motion of the date disc when the date finger swings through at midnight to change the date.
  2. The faces of the date jumper are over lubricated. The Rolex service manual calls for greasing the faces of the date jumper, but if they’re over lubricated then the date jumper struggles to arrest the date disc.
  3. The roller jewel that runs on the cam under the date finger wheel has oil on it. If the roller jewel face gets oil on it, it can cause the date finger wheel to rotate with more force that it was designed for. This extra force knocks the date disc with more force causing it to overpower the date jumper spring.
Solution: remove the date works from the watch, clean them in IPA or naphtha. Reassemble with minimal lubrication (use HP1300 on the date finger column and don’t lubricate the faces of the date jumper). Wash the date disc in water with a tiny amount of dish soap to remove any oil from the teeth. Hopefully that will solve the issue.
 

Luxfer

Renowned Member
5/5/24
641
852
93
Italy 🇮🇹
The problem could be one or a combination of a few things:

  1. The date jumper spring is too weak. This is the spring that arrests the motion of the date disc when the date finger swings through at midnight to change the date.
  2. The faces of the date jumper are over lubricated. The Rolex service manual calls for greasing the faces of the date jumper, but if they’re over lubricated then the date jumper struggles to arrest the date disc.
  3. The roller jewel that runs on the cam under the date finger wheel has oil on it. If the roller jewel face gets oil on it, it can cause the date finger wheel to rotate with more force that it was designed for. This extra force knocks the date disc with more force causing it to overpower the date jumper spring.
Solution: remove the date works from the watch, clean them in IPA or naphtha. Reassemble with minimal lubrication (use HP1300 on the date finger column and don’t lubricate the faces of the date jumper). Wash the date disc in water with a tiny amount of dish soap to remove any oil from the teeth. Hopefully that will solve the issue.
Unfortunately I don't have the skills to do this work, I talk to the TD and since the watch is brand new I send it back and he send a new one to me
 
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