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Valjoux 7733 stem

LovroZG

By LovroZG
in Watch Repairs Help & Advice

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LovroZG New Member

LovroZG

Posted
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Hi to all,

I need help with my Tissot Seastar Navigator Valjoux 7733. Watch is precise and keeps time flawlessly but movement has a one problem and that is stem can be pulled out of watch with just a minimum of force when setting time.

I have noticed that when movement is removed from case stem cannot be pulled out if you set time or you if don't push stem remove button on movement. So I can confirm that movement is ok. But when I put movement back into case and screw down (all the way, securely) case clamps, the movement gets "lifted" a bit and stem can be pulled out with just a bit of force (I know how to handle a timepiece and I am not pulling hard or with too much force - trust me).

Am I doing something wrong with case clamps? Can some one give me a hint on what is wrong with my watch? I would appreciate if someone with experience with this particular movement can reply. 

If any additional information is needed please just ask me.

 

Bye,

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jdm Distinguished Member

jdm

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Is it a new watch or within the 2 yrs mandatory EU warranty? If so give it to official service center for repair, hopefully you opening it has left no visible sign.

If it is not then your watch repair ship will have to find a way to make so mov.t stem hole is perfectly aligned with case, as it seems isn't.

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LovroZG New Member

LovroZG

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Thanks for quick reply. No, i dont think that stem is too short. It clicks into place. It is just that when i allign case clamps ti just dont fit or gets out of alighment. Do you have a picture of your movement that shows case clamps? I screw case clamps tight should they be like that ?

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jdm Distinguished Member

jdm

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16 minutes ago, LovroZG said:

 I screw case clamps tight should they be like that ?

Yes case clamps should be thigth. As mentioned if stem holes mov.t and case) aren't aligned that should be corrected. But it might not be immediate or easy to do that.

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rogart63 Distinguished Member

rogart63

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Have worked on this particular watch. But some valjoux cases has a little edge or lip where the case clamps should sit under. The case clamps should press the movement down . Not lifting it up. Maybe you need to reverse the clamp so the bend is up towards the case back. If it's to low in the case you are maybe missing something in the case. Missing a tension ring on the crystal or wrong crystal. Could be lots of things that is wrong. 

Edited by rogart63
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LovroZG New Member

LovroZG

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OK, I will check If case claps are aligned as you mentioned.

Tension crystal is ok, I have replaced old crystal with new one and that was done by a professional watchmaker. :-)

So you confirm that stem should not be pulled out without pressing release button on movement?

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jdm Distinguished Member

jdm

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55 minutes ago, LovroZG said:

OK, I will check If case claps are aligned as you mentioned.

Tension crystal is ok, I have replaced old crystal with new one and that was done by a professional watchmaker. :-)

So you confirm that stem should not be pulled out without pressing release button on movement?

Of course the stem should never come out without releasing.

I recommend that you give the watch to the professional watchmaker for repair.

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rogart63 Distinguished Member

rogart63

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On 3/15/2018 at 2:30 PM, LovroZG said:

OK, I will check If case claps are aligned as you mentioned.

Tension crystal is ok, I have replaced old crystal with new one and that was done by a professional watchmaker. :-)

So you confirm that stem should not be pulled out without pressing release button on movement?

But is it an original crystal for this watch? As i remember  they are hard to find.  And have read somewhere in her some seeking info about tissot crystals. Show us a picture of the watch. 

Maybe the movement sits a little high or low and then pressing on the settin lever making the stem release when pulled out. Had the experience on a few watches. 

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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.
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      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
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      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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