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Crosman 1377 1322 Question

Discussion in 'Technical' started by queenmonkey, May 26, 2020.

  1. queenmonkey

    queenmonkey Member

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    Hi guys I have two very early Crosman pistols. One is a steel breached 1377. The other is a plastic breach 1322. Both have a sliding breech affair (not a bolt). They have a two pull cocking action at the rear.

    The technical issue is that neither now work! I’ve used them very rarely but since my webley mk3 has packed up I’ve got them out of their boxes to use, without success. The 1377 pump lever gives no resistance at all when pumped. The 1322 starts off better for the first few pumps but the air then can be heard coming out and the lever offers no resistance at all!
    All I’ve ever done is oil them now and again (silicon gun oil). Any ideas as to what’s likely to be the issue here?
    QM
     
  2. cozzamec

    cozzamec Engaging Member

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    Location:
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    Prob be the pump cup seal on one, maybe the valve seal or stem valve seal on the other , you can get a whole set of seals for these including the the pump cup seal (but not the stem valve) from G-mac for around a tenner or @ped might be able to help, he knows his stuff on these
     
  3. queenmonkey

    queenmonkey Member

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    Thanks cozzamec I’ll wait for further comment
    QM
     
  4. Baldilocks

    Baldilocks Engaging Member

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    Place a few drops of Pellgunoil or 25 to 30wt non detergent oil on the pump cup, as it's been known to get many working again after long term storage.

    Transmission fluid also works fine.
     
  5. alan1

    alan1 Engaging Member

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    Hi I've got the 22 one Maine problem with them not pumping up is the o ring around the valve body passing it just comes out of the breach and you may think its the valve leaking
     
  6. Meal Dot

    Meal Dot Busy Member

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    Location:
    South Wales
    Have you tried cocking the gun before pumping? I find it helps with my 1322, but also the cup on the pump is ancient so a bit of lube helps seal it up a bit more.
     
    Baldilocks likes this.
  7. queenmonkey

    queenmonkey Member

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    Hi Meal Dot I tried this and managed to get a couple of shots out of both of them! Not sure on the power of those shots though
    QM
     
    Meal Dot likes this.
  8. ped

    ped Keyboard Hero

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    Location:
    leeds
    the older phase 1/2 stems are obsolete
    the 1377 can be replaced with a new one but the 1322 had a blowby stem and is different
    on the 1377 fit a later valve and a new cup chrono and if needed drill a blow hole
    on the 1322 fit a new cup and valve but drill a blow hole
     
  9. queenmonkey

    queenmonkey Member

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    Thanks for the comment Ped. I have no idea what a blow hole is? From your reply I assume I can’t simply buy some of the parts/mods that see advertised on eBay etc?
     
  10. ped

    ped Keyboard Hero

    Messages:
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    Location:
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    the sliding breech models have a different leade in and probe so the barrels aren't compatible withe the later breech's
    you can fit a barrel and breech but to replace the rear cocking hammer you'll need to slot the tube and fit the later hammer rear cap and spring
     

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