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Crosman 1377 Problem

Discussion in 'Air Pistols' started by welshlad, Dec 29, 2013.

  1. welshlad

    welshlad Member

    Messages:
    10
    Likes Received:
    0
    Location:
    Brynna, South Wales
    Hi Guys / Gals

    I've had a Crosman 1377 pistol in my collection for several years with no problems what so ever.

    I went to use it this afternoon and it's not working. When you pump the pistol, there is no resistance and no air being pumped.

    Has anyone got any suggestions on what the problem could be?

    Regards
    James
     
  2. Paul55

    Paul55 Keyboard Hero

    Messages:
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    Location:
    Peterborough
    Sounds like either the valve seal or the pump cup have failed.
     
  3. welshlad

    welshlad Member

    Messages:
    10
    Likes Received:
    0
    Location:
    Brynna, South Wales
    Cheers for the reply, I'll take it apart tomorrow for closer inspection.

    Any ideas if parts for the gun can be purchased in the UK? I had a quick look and it seems you can only get bits from the US.

    regards
    James
     
  4. ste

    ste Posting Addict

    Messages:
    1,843
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    9
    Location:
    kettering (Rothwell)
    Pull the pump arm back and have a look at the leather seal pop abit of oil on it and try again
     
  5. welshlad

    welshlad Member

    Messages:
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    Location:
    Brynna, South Wales
    I've just pulled the arm back, but can not see a leather seal. On the end is just a piece of plastic with a 7mm split. Should there be something on the end?
     
  6. welshlad

    welshlad Member

    Messages:
    10
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    Location:
    Brynna, South Wales
    This is a picture when the arm is pulled back
     

    Attached Files:

  7. Bazmati2020

    Bazmati2020 Engaging Member

    Messages:
    157
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    0
    Location:
    Luton
    That's the pump up split by the look of it. Will need to find a new one (the bay perhaps). Not sure of price (should be cheap....) but before buying have a look for whole assemblies to see price. I've seen the custom flattop set ups inc valve for £35 on there.
     
  8. Paul55

    Paul55 Keyboard Hero

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    Location:
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  9. jolo-bolo

    jolo-bolo Donator

    Messages:
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    13
    Location:
    Billericay
    Flee bay you can pick them up on there also try for a flat top piston can improve pumping lots.
     
  10. ped

    ped Big Poster

    Messages:
    3,068
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    Location:
    leeds
    from the pic it looks like the piston seal has seperated from the piston and is stuck to the valve face so a strip down and rebuild might sort it
    flat tops are well worth fitting but don't forget to uprate the pivot pin to a solid one(also makes adjusting the piston easier) if you go down that route
    ped
     

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