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Seiko 4843-8100 movement/dial removal

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By jpg
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I need to deep clean my 4843-8100, i got the case back off and the stem out, but the movement won't budge, the few movements I've removed before has all pretty much just fallen out. What am I missing?

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xyzzy WRT Addict

xyzzy

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You're right about the deep clean!  It could just be wedged by gunk.

The case code on the back should tell you how to open it.  Take a look at the dial. If it's larger than the opening on the back then that's a pretty good sign it's supposed to go out the front.

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I cant seem to find a case guide for this movement, but i did find this:

http://akiyose.com/battery-exchange/seiko/grand/grand4843-8050-1.html

It is the earlier A version of the movement, but it looks similar.

unfortunatly it does not show how to remove dial and movement, but it looks like he did it through the back. 

i also found this

https://seikoserviceusa.com/uploads/datasheets/4823A.pdf

If i am not mistaken its the king quartz version.

It looks like this is the ring holding the movement:

 

ring.jpg

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It probably predates the case type being put on the back, which Seiko started doing in 1978.  They used to list each case number in the casing guide book, but you'd have to find one new enough for your watch to be in it but not so new they case number index is gone.  So probably not going to happen.

The one in the first link must have come out the back.  The dial looks no larger, or maybe even smaller, than the movement spacer ring.  And on the photos looking into the empty case, you can clearly see the diameter is smaller on the front.  Which is typical Seiko construction for a watch like this.

I think that ring is just gunked into place.  The probably fits around the movement, and might have a flange the fits between the movement and the dial.

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11 hours ago, xyzzy said:

It probably predates the case type being put on the back, which Seiko started doing in 1978.  They used to list each case number in the casing guide book, but you'd have to find one new enough for your watch to be in it but not so new they case number index is gone.  So probably not going to happen.

The one in the first link must have come out the back.  The dial looks no larger, or maybe even smaller, than the movement spacer ring.  And on the photos looking into the empty case, you can clearly see the diameter is smaller on the front.  Which is typical Seiko construction for a watch like this.

I think that ring is just gunked into place.  The probably fits around the movement, and might have a flange the fits between the movement and the dial.

Figured it out, The ring was supposed to be "un screwed", but it was sort of rusted shut. I proceeded with some "mild persuasion" and now its out. Now i just have to figure out how to get the ring lose so that i can take an angle grinder to it... Suspect the dial have to come of from the movement.

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    • HectorLooi
      Battery

      By HectorLooi · Posted

      Try putting everything back together and closing the back cover. I think one of the two springs has to contact the metal casing to ground the casing. So when you press the button, it will touch the contact on circuit board and close the circuit.
    • PeterS
      Stem removal after fitting hands

      By PeterS · Posted

      Yes, the seconds hand is the longest and goes almost to the edge of the dial. I can’t quite picture it how you do it on the rubber pad
    • Murks
      Battery

      By Murks · Posted

      A don't think so it leaked or damaged it because the watch itself works it just the buttons ain't working not connecting with the circuit board have taken more pictures of where the buttons makes contact with the circuit board.
    • Neverenoughwatches
      Stem removal after fitting hands

      By Neverenoughwatches · Posted

      I think what peter means oh is once he has fitted the hands and  checked for  alignment if them and that they dont foul, how does he then hold the movement to remove the stem in order to case up. The dial cannot be laid on a cushion or in a movement holder as the hands will get damaged. This can be quite tricky for a beginner, what i do is  to stand the movement on edge on a rubber pad so it doesn't slip. Hold the top edge with one finger then my dominant hand uses 3 fingers to press the stem release and flick out the stem. See below peter, leave off the second hand as this is the longest and gets caught the most, then fit it once the stem is out. Alternatively place the movement in one of the cup style holders, i imagine this is what they are designed for. They only touch the very edge of the dial.  
    • PeterS
      Stem removal after fitting hands

      By PeterS · Posted

      Yes I understand that. What I’m asking is, after the hands have been fitted, it’s been checked that the hands do not touch etc. then I need to remove the stem to fit the movement in the case. I have the push type, I need to turn it upside down and push the setting lever post and pull the stem out. But of course the dial and hands are in place and I have a glossy dial with lume dots and I do not want to cause any damage while it’s upside down pushing on the post of the setting lever.
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