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Etanche 73 movement

rogart63

By rogart63
in Watch Repairs Help & Advice

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rogart63 Distinguished Member

rogart63

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That is great . Have a lot of Cup 233 parts . But wonder if i have a mainspring ?  But that would be no trouble. Thanks well spotted. Can see the marking is the same as my movement to. 

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rogart63 Distinguished Member

rogart63

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3 hours ago, wls1971 said:

Cupillard 233 I think check Cupillard on the ranfft site.

Do you think i can order a mainspring without checking the size on the original. Maybe better to remove the spring tomorrow and check if  the sizes are near the ranfft listing. 

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wls1971 Distinguished Member

wls1971

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One of the few movements that can be identified from the bridges due to the distinct barrel bridge, an incredibly long production run in various versions from 1935 to the mid 70's, shock resistance introduced to the movement in the 1940's. I dont know in that time how the movement developed and if different versions have different mainsprings but the movement you have is a early one so I should imagine the mainspring will be the same as listed on Ranfft but you are going to have to take it apart to fit it so you may as well check.If you remove the dial it will probably have the calibre number stamped on the plate.

Cousins list the GR4870 1.70x.095x9x320 which differs only slightly in length when compared to Ranfft

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rogart63 Distinguished Member

rogart63

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9 minutes ago, Deggsie said:


I love it. Reminds me of the ‘dirty dozen’ design



Sent from my iPhone using Tapatalk

This has military background to. But can't say how . Not into military watches. If i understand right Etanche means waterproof in french? 

 

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    • Neverenoughwatches
      Stem removal after fitting hands

      By Neverenoughwatches · Posted

      So leave off the seconds. Stand the movement on its edge, its the dial edge that rests on the pad ( either rubber or cork , something that wont slip ). Use a finger of your left hand to hold the movement upright,  right hand presses the release and flicks out the stem. I do it this way so i can see what I'm under a microscope. But you could hold the movement between two fingers of your left hand, its the right that has to manipulate the stem out by pushing the release and flicking out the stem with  right ring finger nail. Sounds more complicated than it actually is. I guess you could fix a push pin to something solid, then all you need to do is push the release against the pin, leaving your right hand completely free to pull the stem out.
    • 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
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      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.  
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