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Advice BSA Meteor barrel won't break

Discussion in 'Anything Airgun Related' started by dughall, Jan 29, 2014.

  1. dughall

    dughall Active Member

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    I recently retrieved my BSA MK3 Meteor from my dad's house, and found that the barrel will not now break fully.

    I can easily open it as far as exposing the breech, but no further.

    It probably hasn't been fired for 5 or 6 years.

    Can anyone suggest what might be wrong, and what I could do to free it?

    Please bear in mind that I don't have much technical airgun jargon!

    Many thanks!
     
  2. Lee327thGir

    Lee327thGir Donator

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    Sounds a little like your Piston may have siezed in the air cylinder..

    I'd try removing the stock.. Get your self a tin of WD40.. turn the removed action upside down, so that the trigger points upwards, then give spay a liberal amount of WD into the long slot infront of the trigger assembly..

    Or..

    If you have enough WD.. just dunk the whole thing into a tub and let it swim for a week..

    DON'T try to force the action open by swinging on the barrel, until it resembles a coathanger..!!

    Good luck :O)

    Regards.
    Lee.
     
  3. Pavarotti

    Pavarotti Engaging Member

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    I am sure you will have plenty of replies as to why it is stuck but the simplest answer is to take it apart and have a look.

    Clearly it will be a bit daunting if you are not technically minded but as long as you take sensible precautions especially where springs are involved you will be fine. The Meteor is a very easy gun to work on. Also you can expect plenty of help and advice on the forum along with a mass of photos etc showing what to do.

    The other important point is that BSA made millions of them and replacement parts are very easy to come by. Read material on the forum and give it a go. If you get stuck just ask and we will happily give you pointers in the right direction. There may also be videos on what to do and hopefully members will direct you to them.

    Give it a go but be warned. Taking airguns apart to fix them is extremely addictive

    Pav
     
  4. dughall

    dughall Active Member

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    Lee and Pav - thank you for replying so quickly and for being very clear and helpful!

    I'll try the WD40 option first, but I will probably end up dismantling since I am a tinkerer!

    I'll probably be back to bother people for advice for parts replacement etc very soon...

    Thanks again

    Dougie
     
  5. Tazz

    Tazz Engaging Member

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    Well if you are going to take it apart please read one of the many threads on how to strip an air rifle, in particular the bit about needing a method of containing the mainspring. We wouldn't want to read about you needing to adapt to shooting with one eye because you've got one of BSA's finest in the other.
     
  6. Lee327thGir

    Lee327thGir Donator

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    [​IMG]


    Hope this will help you tinker :O)

    Regards.
    Lee.
     
  7. dughall

    dughall Active Member

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    Tazz - thanks for flagging this up. Did a bit of rooting about and from what I can see the spring on the meteor shouldn't travel too much once released, so I'm hoping that the leather mit we use for the stove plus a vice should be adequate. I'm still going to do a bit more research before tackling...
     
  8. dughall

    dughall Active Member

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    Lee - this is fantastic - you're a star!
     
  9. Pavarotti

    Pavarotti Engaging Member

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    I'm sure you have worked it out that you must remove the pin (DP006 on the drawing) before the spring can come out. However in order to do that you must take some of the pressure off DP006 before you can remove it. You need to get or make up a slotted piece of wood eg a piece of broom handle, push it down the tube against the spring guide SG06.

    With pressure of the spring taken off DP006 you should be able to slide it out then gently release the spring up. Best check out photos and threads for this.
    Having three hand helps considerably. As always keep your face well away from the end of the tube in case the spring make a bolt for freedom. Your glove idea is good and you may want to drap a heavy blanket over the gun to absorb any energy if the spring goes wild. Remember safety first.

    Good luck. keep us posted.
     
  10. thisisdonald

    thisisdonald Engaging Member

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    Take pictures of each stage before you disassemble them.. nothing worse than trying to put a trigger back together using an exploded diagram!
     
  11. dughall

    dughall Active Member

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    I was wondering how to release the pressure on the spring but that's a great idea. Thank you!
     
  12. dughall

    dughall Active Member

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    Good idea! Thank you!
     
  13. Lee327thGir

    Lee327thGir Donator

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    :O)
     
  14. Pavarotti

    Pavarotti Engaging Member

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    Er... What about me :0(
     
  15. bhodge

    bhodge Keyboard Hero

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    I'm intrigued, and Ill be following this thread with interest. I've done quite a bit on Meteor's, and I've got to admit that Lee could well be right about the piston being seized inside the cylinder.
    As has also been said "Meteor's are easy to work on", the mainspring is about the only thing to be wary of...make sure you control the spring release safely.
    Keep us up to date with your findings Dug.
    PS - I love your part of the country.
     
  16. dughall

    dughall Active Member

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    Thanks for that advice, Pavarotti! I have a large piece of dowel which should do the job, and I like the blanket idea. The third hand will come from the other half ... not that she knows it yet!
     
  17. dughall

    dughall Active Member

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    It's a gorgeous part of the country to live in :) - but it was an even more gorgeous girl that brought me here!

    I'll keep eveyone posted - tomorrow night and Saturday morning is zero hour!

    Thanks everyone for being incredibly helpful and friendly!

    Dougie

     
  18. Pavarotti

    Pavarotti Engaging Member

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    Hi.

    Bhodge has jogged my memory. All three cells. The first Meteor I worked on appeared to have a broken trigger but the real problem was that the piston head had detached itself from the piston and was stuck fast in the cylinder.

    I tried heat, WD 40 I even tried catching the head with some string and pulling it out. Eventually a highly experience qualified engineer released it using using BF.

    Brute force . He slammed the cylinder down repeatedly on a resilient wooden surface which dislodged it.

    Hopefully this is not your problem and once your spring has been removed (safely) you may be able to slide the piston out without too much trouble.

    Good luck to you on Saturday and to Italy in the rugby.
     
  19. bhodge

    bhodge Keyboard Hero

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    Positive thinking, thats whats needed! That piston will come out..!!
     
  20. dughall

    dughall Active Member

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    Hi folks

    Apologies for not replying sooner. The initial WD40 soak did nothing, and then work and life took over!

    I've taken the spring out, removed the trigger but still no joy - the piston won't shift.

    Here's the situation, and it is looking like a problem that Pavarotti flagged up:

    (Apologies for lack of exacting terminology)

    There is a bit of back and forth "play" in the piston itself - about 2mm tops - and this is pretty free. It also seems to rotate fairly freely withing the tube.
    However, looking through the hole where the gas is driven into the barrel, the piston head is not moving at all.
    I've tried what Pav tried - a bit of string and bashing it on logs in the woodpile, but no joy. I've also tried tapping a bit of slim metal through the gas hole (whatever you call it), but it's stuck fast (in fact the metal was starting to bend rather than the piston giving way).

    I'm assuming that the piston head has jammed, and the 1 or 2 mm play is at the point where the piston head and the piston itself join. HOWEVER ... listening to the "click" as I move the piston back and forth, I'd swear that it is bashing against something further back on the gun. But I am willing to put this down to misinterpretation.

    It's currently sitting vertically in the woodpile with a load of WD40 squeezed through the gas hole.

    In the meantime ... any ideas?

    Many thanks guys!
     

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