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Thread: Broken fischer cap

  1. #11
    RBW Member steveg is an unknown quantity at this point steveg's Avatar
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    rEvo iii

    Re: Broken fischer cap

    After a day and a half of fiddling about, finally managed to get all the bits out.

    In the end, hot needles wouldn't work and neither dentist hooks. Surgical blades were the answer. Butchered it in place and the plastic came out in a lot of tiny pieces. Now having no cap, I decided it is staying plugged in and will be charged in situ

    Connection works, plugged in, locked, machine checked and ready to dive

    Thanks all for the suggestions, much appreciated.

    Steve

  2. #12
    RBW Member Capt Morgan is an unknown quantity at this point Capt Morgan's Avatar
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    KISS Classic

    Re: Broken fischer cap

    Now you need to use a metal sealing cap.

  3. #13
    RBW Member steveg is an unknown quantity at this point steveg's Avatar
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    rEvo iii

    Re: Broken fischer cap

    Until I get one of those, it's not coming off the cable.

    I don't dive that computer OC anyway so if I leave it plugged in I won't need a cap at all

    Steve

  4. #14
    RBW Member Mike_Eitel is an unknown quantity at this point Mike_Eitel's Avatar
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    MeCCRxWi

    MeRAY, MeTravox,MeCCRV"x,Inspi

    Re: Broken fischer cap

    Are you sure that you did not damaged the tiny oring?
    Being you i would change it and fill plug with some mineral oil.
    You can easily get him out by sticking a needle in = destroy. Placing new in is a bit fiddly, but last "push" can be done with the help of the plug.
    Please don't ask for the size, can't remember. Maybe somebody else knows.

  5. #15
    RBW Member steveg is an unknown quantity at this point steveg's Avatar
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    rEvo iii

    Re: Broken fischer cap

    Don't think so. It was hard enough to get to the broken off plastic which was above where the o ring sits. I'm assuming the o ring is at the bottom of the receptacle part.

    As I understand, both sides are sealed whether plugged in or not, so water should not flood the computer or the cable if it comes off. Before I plug it I always put oil in it for corrosion protection, also thinking if the connection is already flooded with oil, no water goes in. That is, unless I'm missing something very obvious

    Steve

  6. #16
    RBW Member Mike_Eitel is an unknown quantity at this point Mike_Eitel's Avatar
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    MeCCRxWi

    MeRAY, MeTravox,MeCCRV"x,Inspi

    Re: Broken fischer cap

    What you do not see is the lot of air inside of the plug plus the "tube" part of the cable. Plenty space to be filled with water so this oring is damm important.

  7. #17
    RBW Member steveg is an unknown quantity at this point steveg's Avatar
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    rEvo iii

    Re: Broken fischer cap

    I was under the impression the o ring seals the pins section and from the pins backwards to the computer and sensors it is sealed by an epoxy/resin or whatever it's called. I think the term is "potted"?

    I'm thinking it highly unlikely for an o ring to be the only watertight seal, but..

    Off to check the o ring anyway

    Steve

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