Seiko King Quartz 9923-7000 Caseback "Close < Set > Open"

[PierreChaton]

I'm struggling with this King Quartz 9923-7000 caseback. It's incredibly tight to turn at all, when it finally did break free it only turned 90 degrees or so before feeling like it was at a dead stop.

There is this marked on the caseback:

I tried lining up the "|" next to "open" with the crown, but it didn't seem like the caseback was released by doing so.

Am I missing something here? Or is it just a really tight screwback?

 

Edit: Got there in the end. Crown icon lined up with the crown and a stanley blade to pop it open.

Edited October 29, 2024 by PierreChaton

[AndyGSi]

24 minutes ago, PierreChaton said:

I'm struggling with this King Quartz 9923-7000 caseback. It's incredibly tight to turn at all, when it finally did break free it only turned 90 degrees or so before feeling like it was at a dead stop.

There is this marked on the caseback:

I tried lining up the "|" next to "open" with the crown, but it didn't seem like the caseback was released by doing so.

Am I missing something here? Or is it just a really tight screwback?

 

It should rotate to the line to close and then to the crown to open.

[PierreChaton]

Thanks, I tried getting it open in the 'Set' position initially, but it didn't seem like it ws going to come. It was a fight to turn it at all, but working it back and forth loosened it up in the end.

The gasket's seen better days.

[AndyGSi]

That's the problem sometimes with gaskets as they deteriorate over time they turn into a rubber glue.

You'll need a EZ2881N01 to replace it.

[JohnR725]

1 hour ago, PierreChaton said:

King Quartz 9923

I don't suppose now that the back is off we can get a picture of the movement?

[PierreChaton]

13 hours ago, AndyGSi said:

You'll need a EZ2881N01 to replace it.

I'll see what I can do with generic first. Cousins don't have them so it looks like it would be buying from eBay in the US.

 

13 hours ago, JohnR725 said:

I don't suppose now that the back is off we can get a picture of the movement?

Some corrosion on the battery terminal, and the battery doesn't stay in place.

I'm not sure what to do about that. Adjust the positive terminal somehow? The PO had a piece of tape over it to hold it in place.

[JohnR725]

1 hour ago, PierreChaton said:

Adjust the positive terminal somehow?

I suppose you could try replacing it? the positive terminal does appear to be listed as a replaceable components if you can find one anywhere in the universe will it does seem to cross reference to quite a few things. Then we are searching for parts it does appear to be your missing a plate screw. Otherwise you could try gently bending it hopefully it won't break.

[HectorLooi]

Is the battery size correct for this movement? It looks a little too thick.

[AndyGSi]

2 hours ago, PierreChaton said:

I'm not sure what to do about that. Adjust the positive terminal somehow? The PO had a piece of tape over it to hold it in place.

Everything looks resonable in relation to the shape and position of
the positive maybe a little vertical compared to the image below.

I'd expect the right side of the battery to slide under and help hold it in place.

The 4242.780 are still available in limited quantities.

 

2 minutes ago, HectorLooi said:

Is the battery size correct for this movement? It looks a little too thick.

SR927 is the correct battery.

[Neverenoughwatches]

As John has mentioned,  one of the train bridge screws is missing. You probably just need a bit more tension on the positive terminal to add a little extra force to keep the battery in place until the back it refitted. I cant see anything other than that terminal for holding the battery in position. 

[PierreChaton]

20 minutes ago, HectorLooi said:

Is the battery size correct for this movement? It looks a little too thick.

 

20 minutes ago, AndyGSi said:

Everything looks resonable in relation to the shape and position of
the positive maybe a little vertical compared to the image below.

I'd expect the right side of the battery to slide under and help hold it in place.

The 4242.780 are still available in limited quantities.

 

SR927 is the correct battery.

SR927 is what's listed in the technical guide, but I might try a 920 to see if that stays in place better.

1 hour ago, JohnR725 said:

 it does appear to be your missing a plate screw.

So it is, I hadn't noticed. A rummage for something that fits I suppose.

Thanks all.

[AndyGSi]

37 minutes ago, PierreChaton said:

So it is, I hadn't noticed. A rummage for something that fits I suppose.

The 022.468 screws are used across multiple movements.

https://www.emmywatch.com/db/part/screw__cell_use_w_0027508--0022468/seiko--9923a/

[PierreChaton]

5 hours ago, AndyGSi said:

The 022.468 screws are used across multiple movements.

https://www.emmywatch.com/db/part/screw__cell_use_w_0027508--0022468/seiko--9923a/

Hadn't seen that site before, thanks. I've got a couple of options to scavenge one from, it seems.

[JohnR725]

8 hours ago, Neverenoughwatches said:

I cant see anything other than that terminal for holding the battery in position. 

the only thing that you not seeing that would hold the battery in place is the back. Otherwise it's all there and yes he does have the correct battery.

8 hours ago, AndyGSi said:

I'd expect the right side of the battery to slide under and help hold it in place.

The 4242.780 are still available in limited quantities.

the battery is not supposed to go underneath. All the positive contact does is push the battery or push on the battery at in the back holds the whole thing in place. So somebody shove the wrong size battery in or? Occasionally what will come up is various manufacturers over various time spans have shaped the batteries slightly differently at on some watches that can be an issue. So if the positive contact is been slightly bent then it's not going to hold. As it is available even in limited quantities this means you can attempt to get a replacement for the future and bend this one or trying to bend this one or use your replacement one.

then yes this type of holding for batteries is quite common in Seiko watches or some watches of Seiko's and they really do require the back the whole thing in place sometimes. It depends upon how much pressure the negative is pushing up for instance. Or as I said how much abuse it's taken by people shoving in the wrong battery which is very common on electric watches

 

[PierreChaton]

Coming back to this, a 7546 took one for the team an provided a 022 468 screw. Not for the first time by the looks of things.

I noticed they're the same screw used for the battery strap on the 7548, which might put them in demand.

I tried adjusting the 9923 battery terminal, but I may have been a little too cautious to make any difference. An SR920W does stay in place, so I just went with that.

For the gasket I bought a generic flat 28.90 x 30.30 x 0.60mm from Cousins, part number 28903030C, and that seems fine.

[AndyGSi]

1 hour ago, PierreChaton said:

I tried adjusting the 9923 battery terminal, but I may have been a little too cautious to make any difference. An SR920W does stay in place, so I just went with that.

Battery shoud be an SR927 which being thicker would clamp better.

[PierreChaton]

2 hours ago, AndyGSi said:

Battery shoud be an SR927 which being thicker would clamp better.

Thanks, but while a 927 is indicated in the technical guide, it doesn't stay in place. I posted some pictures earlier in the thread.