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Bsa Fill Valve Won't Seal

Discussion in 'Technical' started by Wayne Dunstan, Jul 24, 2018.

  1. Wayne Dunstan

    Wayne Dunstan Posting Addict

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    Have replaced the orings on the fill valve of my goldstar se. Now when I try filling with air it just comes straight back out. I followed xtx video for servicing the valve am I missing something Should I be lubricating something or should I decrease the parts? Please help wasted a lot of air so far with no joy.
     
  2. RedKen

    RedKen Me head's a shed.

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    Should be of interest to me. Mines just decided to leak from the inlet. It looks fairly straight forward.
     
  3. TinCan Tony

    TinCan Tony Next video please

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    I feel your pain, Wayne. I had a similar problem with Mrs TinCan's BSA MK1 Scorpion a few days ago and a very good member of the forum helped me out - in your neck of the woods, too...

    https://www.airgunforum.co.uk/commu...problem-with-mrs-tincans-bsa-scorpion.247050/

    I'm sure they'll be someone on here who can help you out too. Good luck.
     
  4. SteveO

    SteveO Account Parked

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    I don't know anything about the fill valves on this model, they are totally different to previous BSA incarnations - foreign!

    Is this the one?

    large-goldstar-se-filler-assembly.jpg
     
    TinCan Tony likes this.
  5. Wayne Dunstan

    Wayne Dunstan Posting Addict

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    That's the one, there's only a couple of parts to it really. I've changed the o rings put it back together but now the valve won't seal air just comes out. I'm baffled not sure what I've done wrong.
     
  6. Wayne Dunstan

    Wayne Dunstan Posting Addict

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    15324545061262066449136.jpg That's it stripped, should I maybe be using some lubricant on the parts I'm lost, only video is xtx and done that but just won't hold air when I put it back together.
     
  7. SteveO

    SteveO Account Parked

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    Wayne, take the valve out again and check you haven't ripped the seal going over the threads, use some silicone grease, just a smear on your fingers and coat the seals.

    Drop of gun oil on the metal to metal parts, don't get the grease in the valve.

    Rebuild the valve and carefully try and let some air through it before refitting to see if the valve opens, obviously be safe, don't blast it!
     
  8. Wayne Dunstan

    Wayne Dunstan Posting Addict

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    Thank you SteveO done what you said also removed button gauge and replaced that seal seems to be holding air give it a couple days and see if the leak is fixed.
     
    SteveO likes this.
  9. Wayne Dunstan

    Wayne Dunstan Posting Addict

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    Think I no what might be causing the problem now. When I put the dust cap back on, and try to turn it. I can hear air escaping seems to be moving the gauge. Looks like it needs some lubricant to stop it gripping the gauge.
     
    Deejayuu likes this.
  10. RedKen

    RedKen Me head's a shed.

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    Just stripped mine this morning. Unlike any of the others on here. Under the bottom of the filler is an allen screw with an o ring. Undoing it doesn't reveal anything and there appears to be no non return stuff to refurb. The bigger o ring which seals the filler in the cylinder body was well chewed, so replaced that. Refilled and all seems well. Just find it hard to get my head around though. Pity I didn't have the camera handy.
     
  11. RedKen

    RedKen Me head's a shed.

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    Still holding a full head of steam. Still can't work out how though.
     
    TinCan Tony likes this.
  12. TinCan Tony

    TinCan Tony Next video please

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    Because it's not leaking, maybe ;)

    Sounding good so far :thumb:
     
  13. Wayne Dunstan

    Wayne Dunstan Posting Addict

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    Mines still holding air as well. Off up the range with it Monday hopefully
     
    TinCan Tony and SteveO like this.
  14. Coggie

    Coggie Well-Known Member

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    Can anyone tell me the o ring sizes I need to do this?
     
  15. TinCan Tony

    TinCan Tony Next video please

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    Can you upload a photo of the end of the air cylinder.

    In my experience with Mrs TinCan's Scorpion, the size does not have to be precise, as long as it's a snug fit. :thumb:

    Here's a slightly over-sized one I fitted, but it worked perfectly...

    O Ring 3.jpg
     
  16. Coggie

    Coggie Well-Known Member

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    No, I mean to do a service on the full inlet valve assembly on the BSA Gold Star SE. So I think it is three or four O Rings I need for the full assembly service. My Valvr is like Wayne's shown above.
     
  17. TinCan Tony

    TinCan Tony Next video please

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