- 14/7/15
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Hello everyone
I encounter several date issue on a hangzhou 6460 movement, clone of a 2836 with gmt function.
I have disassembled and reassembled many times the date mechanism, cleaned, oiled. I even replaced the parts with ETA parts. After many hours I do not understand what is going on. I have already disassembled and maintained several 28xx, 27xx movements and even the 7753 of my Paul Newman, but here I'm stuck. I usually manage to find information on the net but this time I can not find anything to help me. Before I go crazy I call on you. My watchmaking English is not very good, I hope you will understand my explanation.
The main issue :
2555 calendar driving wheel lift on one side after a little more than a half turn when the 2632 date unlocking yoke back in place. Then it blocks the GMT wheel.
I have replaced 2632 date unlocking yoke, 2633 unlocking yoke spring, 2644 unlocking yoke maintaining plate, 2555 calendar driving wheel , 2543 intermediate date wheel, 2784 double jumper, 2595 date jumper maintaining plate, 462 minute train bridge with ETA parts without getting better results.
Here are some pics to illustrate my bad explanations.
The date mechanism assembly
2632 date unlocking yoke, 2633 unlocking yoke spring, 2644 unlocking yoke maintaining plate
2555 calendar driving wheel
2543 intermediate date wheel
2784 double jumper
2595 date jumper maintaining plate
462 minute train bridge
Then GMT wheel, every parts seams in good place.
Calendar driving wheel pushes the date unlocking yoke when turning
Has its return in place the yoke lifted the calendar driving wheel on her left side.
Then it block the GMT wheel
I hope it's clear enough with these pics.
Thanks for your help
I encounter several date issue on a hangzhou 6460 movement, clone of a 2836 with gmt function.
I have disassembled and reassembled many times the date mechanism, cleaned, oiled. I even replaced the parts with ETA parts. After many hours I do not understand what is going on. I have already disassembled and maintained several 28xx, 27xx movements and even the 7753 of my Paul Newman, but here I'm stuck. I usually manage to find information on the net but this time I can not find anything to help me. Before I go crazy I call on you. My watchmaking English is not very good, I hope you will understand my explanation.
The main issue :
2555 calendar driving wheel lift on one side after a little more than a half turn when the 2632 date unlocking yoke back in place. Then it blocks the GMT wheel.
I have replaced 2632 date unlocking yoke, 2633 unlocking yoke spring, 2644 unlocking yoke maintaining plate, 2555 calendar driving wheel , 2543 intermediate date wheel, 2784 double jumper, 2595 date jumper maintaining plate, 462 minute train bridge with ETA parts without getting better results.
Here are some pics to illustrate my bad explanations.
The date mechanism assembly
2632 date unlocking yoke, 2633 unlocking yoke spring, 2644 unlocking yoke maintaining plate
2555 calendar driving wheel
2543 intermediate date wheel
2784 double jumper
2595 date jumper maintaining plate
462 minute train bridge
Then GMT wheel, every parts seams in good place.
Calendar driving wheel pushes the date unlocking yoke when turning
Has its return in place the yoke lifted the calendar driving wheel on her left side.
Then it block the GMT wheel
I hope it's clear enough with these pics.
Thanks for your help