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Post by nom nom on Jan 5, 2015 10:54:33 GMT -8
Notice this morning that my recently acquire Tuna lost roughly 25 min overnight. Looks like I'll need it serviced. Just curious if this is normal for a battery powered watch.
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Post by Deleted on Jan 5, 2015 10:57:36 GMT -8
Notice this morning that my recently acquire Tuna lost roughly 25 min overnight. Looks like I'll need it serviced. Just curious if this is normal for a battery powered watch. Since there are a lot of mechanical gears and pivots in a quartz movement, it stands to reason that servicing will be needed at some point. Seiko built all the movements in these tool watches to be completely serviceable  |
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Post by nom nom on Jan 5, 2015 11:31:16 GMT -8
Thanks! I guess I should stop wearing it and send it off for service.
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Post by seikoholic on Jan 5, 2015 11:40:26 GMT -8
Might have a slipping cannon pinion, so that the added drag of the calendar being pushed over stops the hands even if it doesn't stop the movement.
I guess, see if it loses any time during the day, and then see what it's losing during the day/date changeover. If it only loses time during the changeover, there's your answer.
But if the servicing history is unknown, it's not a bad idea at all to do the service and have a level set.
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Post by nom nom on Jan 5, 2015 14:41:26 GMT -8
I think I've noticed it only in the mornings. During the day it's pretty spot on. Just to be on the safe side, you'll probably get a package from me in the mail. I hope that's alright with you.
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Post by seikoholic on Jan 5, 2015 15:01:09 GMT -8
Center wheels are available. Cannon pinions will be more a challenge. But you might not need both (if in fact this is the issue at all). We'll see.
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Post by Deleted on Jan 5, 2015 15:32:02 GMT -8
Center wheels are available. Cannon pinions will be more a challenge. But you might not need both (if in fact this is the issue at all). We'll see. Cannon pinions can be adjusted/staked if new ones are no available. I've done a few successfully but they are tricky  As you say, you won't know until you open it up. |
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Post by seikoholic on Jan 5, 2015 17:54:34 GMT -8
Center wheels are available. Cannon pinions will be more a challenge. But you might not need both (if in fact this is the issue at all). We'll see. Cannon pinions can be adjusted/staked if new ones are no available. I've done a few successfully but they are tricky As you say, you won't know until you open it up. A little goes a very long way when doing that. |
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Post by Deleted on Jan 5, 2015 18:31:50 GMT -8
Cannon pinions can be adjusted/staked if new ones are no available. I've done a few successfully but they are tricky As you say, you won't know until you open it up. A little goes a very long way when doing that. I made up my own tool...   There is a tiny divot in the center of the jaws where I fit the cannon pinion. The pinion has the shaft of a screwdriver shoved through it so the crimper can't crush the barrel. The adjustment screw on the handle sets the depth of the crimp. So far it has worked flawlessly every time :dance: |
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