Help needed for Seiko 4005 - Seiko & Citizen Watch Forum Japanese Watch Reviews, Discussion & Trading
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Old 05-15-2019, 04:00 AM   #1 (permalink)
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Default Help needed for Seiko 4005

Hi, I just got myself a Seiko 4005 7000 black dial and I miss out checking the dates. Its seems tht the dates on the wheels are missing or faded.

So I am looking for a replacement dial. Anyone can help or have a spare tht they wont mind parting with?

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Old 05-15-2019, 08:36 PM   #2 (permalink)
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so u are just wanting a new date wheel?....any pics of what u have?...God Bless,John
they should be quite easy to find once we know what u have...
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Old 05-16-2019, 09:37 AM   #3 (permalink)
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so u are just wanting a new date wheel?....any pics of what u have?...God Bless,John
they should be quite easy to find once we know what u have...
Yeah, just need a date wheel disc for the 4005 7000, I don't hv the part number so I am not sure which wheel date to buy.
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Old 05-16-2019, 12:21 PM   #4 (permalink)
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well here is the technical info on the 4006a...https://www.thewatchsite.com/files/S...uals/4006A.pdf
i do not see one for the 4005....the part number for the date wheel is 801805....hope this helps...God Bless,John...if u disassemble your watch...the part number will be on the old wheel too...i would also contact BigVlad86 on here...and SeikoChrono..they have NOS parts and are both great to deal with....
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Unknown....

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Old 05-17-2019, 12:27 AM   #5 (permalink)
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Originally Posted by jringo8769 View Post
well here is the technical info on the 4006a...https://www.thewatchsite.com/files/S...uals/4006A.pdf
i do not see one for the 4005....the part number for the date wheel is 801805....hope this helps...God Bless,John...if u disassemble your watch...the part number will be on the old wheel too...i would also contact BigVlad86 on here...and SeikoChrono..they have NOS parts and are both great to deal with....

Thanks jringo8769, I have privately message BigVlad86 before I posted this thread and he told me he does not have it. But I have not checked on SeikoChrono. Thanks for your help
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Old 05-17-2019, 12:52 AM   #6 (permalink)
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My info shows the 4005 date dial to be 801806, so you may have problems using the 4006s 801805. The 801805 might be taller to match up with the height of the day disc next to it.
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Old 05-17-2019, 05:24 AM   #7 (permalink)
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My info shows the 4005 date dial to be 801806, so you may have problems using the 4006s 801805. The 801805 might be taller to match up with the height of the day disc next to it.
Yeah rileynp, I wanted to use the dial for the 4006 but due to the single digit difference I might hv some issues with it. No one here has a spare to part with?

How much would a wheel date cost?
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Old 05-17-2019, 10:19 PM   #8 (permalink)
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Originally Posted by rileynp View Post
My info shows the 4005 date dial to be 801806, so you may have problems using the 4006s 801805. The 801805 might be taller to match up with the height of the day disc next to it.
Well thank u for that great info...i stand corrected...God Bless,John

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Unknown....

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Old 05-21-2019, 06:46 PM   #9 (permalink)
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You will probably struggle to get a replacement date ring for a 4005. 4005's are relatively rare and always go for more money, so getting a parts watch isn't easy, especially since the date ring is the first thing to deteriorate.

The original date ring seems to be a metal ring with a waterslide transfer which has the actual numbers on. so its very easily damaged if moisture has got in the watch. I've got a few where the original transfer has half lifted off but not torn yet. its clear plastic with black numbers.

In all the attached pictures, the 4005 is to the right. The first picture is supposed to show they are both the same diameter, internal and external (the 4006 is to the left) .

The second picture shows the difference, as Rileynp correctly pointed out. The 4005 is basically a flat disk, but the 4006 is dished to allow for the day ring to sit inside and everything will still be flush. I can't think of a practical way to modify a 4006 date ring to suit a 4005 directly.

The 3rd picture shows the date dial guard sitting in place. You could use a 4006 ring as is probably, if you are willing to mess about a bit. You'd need to raise the dial, but it just has legs that can fix at any height. Make sure the date ring isn't rubbing on the back of the dial. You'd need to play around with the crystal. I seem to remember an old post where someone had problems replacing a 4005 crystal with a 4006 but I could be wrong. i suspect the crystals may be different to accommodate the different height. A 4005 case is not the same as a 6010, so the case could be a different height allowing the same crystal, not sure. (the 4005 case has a deeper notch for the alarm button than the 6010 but otherwise "appears" the same) The crystals are easily machined if you have a lathe. I machine all my replacement crystals because none are the correct shape compared to old ones (which I am certain are original). All the NOS ones are very dubious in my opinion.

I have an old 4005 I mean to do up one day and its date ring is pretty rough too. My plan is to use waterslide transfer paper and print a whole bunch of transfers on one sheet so I can cut them out later. Something like this
`
https://www.ebay.com.au/itm/5PCS-A4-...F0ruzVtAl0L2tA

That is just a random link, i don't know if that's a good supplier or not by the way. It would need a bit of trial and error scaling something like the last photo onto paper, until it was the right size. You might need to put some effort into that last photo if you want to use it. That was a photo of one of my rings which I adjusted in photoshop (not very well by the look of it, but it was just meant to demo my idea.)

If you have cad or corel draw or photoshop etc, you should be able to do it accurately without trial and error. Worth setting it up on a bit of normal paper until you are sure you have the right size. Then just re-use your existing ring. If you do this, maybe let us know if it works. Its something i will get round to but not for ages no doubt.
Attached Images
File Type: jpg date-rings.jpg (60.6 KB, 4 views)
File Type: jpg date-ring.jpg (49.3 KB, 3 views)
File Type: jpg Date-dial-gaurds.jpg (86.8 KB, 3 views)
File Type: jpg dates.jpg (115.6 KB, 4 views)
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Old 05-23-2019, 10:20 AM   #10 (permalink)
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Originally Posted by sossity View Post
You will probably struggle to get a replacement date ring for a 4005. 4005's are relatively rare and always go for more money, so getting a parts watch isn't easy, especially since the date ring is the first thing to deteriorate.

The original date ring seems to be a metal ring with a waterslide transfer which has the actual numbers on. so its very easily damaged if moisture has got in the watch. I've got a few where the original transfer has half lifted off but not torn yet. its clear plastic with black numbers.

In all the attached pictures, the 4005 is to the right. The first picture is supposed to show they are both the same diameter, internal and external (the 4006 is to the left) .

The second picture shows the difference, as Rileynp correctly pointed out. The 4005 is basically a flat disk, but the 4006 is dished to allow for the day ring to sit inside and everything will still be flush. I can't think of a practical way to modify a 4006 date ring to suit a 4005 directly.

The 3rd picture shows the date dial guard sitting in place. You could use a 4006 ring as is probably, if you are willing to mess about a bit. You'd need to raise the dial, but it just has legs that can fix at any height. Make sure the date ring isn't rubbing on the back of the dial. You'd need to play around with the crystal. I seem to remember an old post where someone had problems replacing a 4005 crystal with a 4006 but I could be wrong. i suspect the crystals may be different to accommodate the different height. A 4005 case is not the same as a 6010, so the case could be a different height allowing the same crystal, not sure. (the 4005 case has a deeper notch for the alarm button than the 6010 but otherwise "appears" the same) The crystals are easily machined if you have a lathe. I machine all my replacement crystals because none are the correct shape compared to old ones (which I am certain are original). All the NOS ones are very dubious in my opinion.

I have an old 4005 I mean to do up one day and its date ring is pretty rough too. My plan is to use waterslide transfer paper and print a whole bunch of transfers on one sheet so I can cut them out later. Something like this
`
https://www.ebay.com.au/itm/5PCS-A4-...F0ruzVtAl0L2tA

That is just a random link, i don't know if that's a good supplier or not by the way. It would need a bit of trial and error scaling something like the last photo onto paper, until it was the right size. You might need to put some effort into that last photo if you want to use it. That was a photo of one of my rings which I adjusted in photoshop (not very well by the look of it, but it was just meant to demo my idea.)

If you have cad or corel draw or photoshop etc, you should be able to do it accurately without trial and error. Worth setting it up on a bit of normal paper until you are sure you have the right size. Then just re-use your existing ring. If you do this, maybe let us know if it works. Its something i will get round to but not for ages no doubt.

WOW! thanks for your in-depth advise. the pictures that you shared is how my date wheel looks like...some even without the dates. totally blank! However, the good news is I managed to find a new "NOS" date wheel. I hope its really for 4005. I checked with the manuals tht a member shared with me. But I will definately share your advise about the wheel difference with my watch repair guy so he will know whts going on. I think the watch needs a service too as its rather tight when I adjust the time. The alarm and time works. Just could not take it that the dates are missing. But thanks for your advise on it and your time. I am now officially a bell nut.
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Old 05-23-2019, 11:45 AM   #11 (permalink)
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I have both 0801806 and 0801805 date dials NOS


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Old 05-30-2019, 11:21 AM   #12 (permalink)
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I have both 0801806 and 0801805 date dials NOS


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thanks @acidstain, I managed to find the part but will definitely contact you if I need another one.

Thanks
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