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PostPosted: Wed Mar 08, 2006 3:13 pm 
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Joined: Tue Jan 24, 2006 1:09 am
Posts: 30
Location: California, USA
ok heres the deal, my gun (Am77 or crossman 2100) had an air leak for a while. Suddenly , yesterday, it decideds to go "el crapo" on me and not hold air. well it holds a little bit but i dont like a pellet to just sputter out for 5 feet, if at all. So my question is. What could be the cause of the leak and what parts should i replace. slkdjfsdjfsl!!!! thanks for any help you may give.

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PostPosted: Wed Mar 08, 2006 3:58 pm 
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Joined: Sat Sep 03, 2005 7:37 am
Posts: 1186
Location: ontario
It's most likely you air valve. I find the most common problem in pumpers is the o-rings go bad on the air valve, the check valve, or the valve stem head go bad. what you should do is order a whole new air valve assembly from crosman.

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PostPosted: Wed Mar 08, 2006 4:06 pm 
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Joined: Mon Jan 09, 2006 1:52 am
Posts: 241
Location: Georgia, USA
if you can, mix up a bit of soapy water and pump up your gun a bit. then, using a rag, apply the soapy water everywhere you think the air might be coming from. when you see it bubbling, you know that's where your leak is. i'd hate to see you replace an entire valve if you only need a new o-ring.

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PostPosted: Wed Mar 08, 2006 4:15 pm 
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Joined: Tue Jan 24, 2006 1:09 am
Posts: 30
Location: California, USA
well i opened up the gun last night to look for anything that looked bad. i got the gun all back together and it shot just fine(minus the air problem)
But i pulled out this brass do-hickey which im assuming is the valve. It had an O-ring on it. was a pinkish color and was still stretchy..but maybe its not supposed to be that color O.O
Weel you know when you pump an air gun when you pull the pump out you can hear that hiss of air getting sucked in. Well my gun doesnt do that anymore and when i close teh pump i can hear the air jsut flooding out. On the parts list im thinking part number 2200E016 has a little plug looking thing, that looks like it is not forming a seal. And maybe i should replace the O-ring just to make it new again. So what do you think?

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PostPosted: Wed Mar 08, 2006 4:16 pm 
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Joined: Tue Jan 24, 2006 1:09 am
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Location: California, USA
one more question. whee would i order that parts? from the crossman site? because i havent seen anything there about ordering parts.

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 Post subject: 2100
PostPosted: Wed Mar 08, 2006 4:25 pm 
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Joined: Thu Sep 01, 2005 12:01 pm
Posts: 1091
Location: Wilkie, SK
That's the right colour 'o' ring - no prob there. I'm thinking that the 'o' ring has gone bad or you might have a bit of accumulated gunk in the valve itself that is preventing the seals from engaging. Did you take the valve apart???


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PostPosted: Wed Mar 08, 2006 4:36 pm 
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Joined: Tue Jan 24, 2006 1:09 am
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Location: California, USA
:O the valve looked like it came apart but when i tried it wouldnt budge. is it just a tight fit or should it just unscrew without a problem?

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PostPosted: Wed Mar 08, 2006 5:07 pm 
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Joined: Sat Sep 17, 2005 11:30 pm
Posts: 1897
Location: North Bay Ontario Canada
best soloution is to get a whole new valve and a new pump cup also if you have the safty blow out cantainer that goes in the valve get one of thoes to and just replace it all, in the long run its far cheaper then to keep ordering partsm,, how ever the most comman part to blow is the safty blow out unit its cause form over pumping the 2100 2200 and the 760's and 66 and 66 c and others wiht this typs of valve safty or to some of you you might call it a bledd hole ,any how it is a detun part and the guns are not supopsed to be pumped over 8 times other wise prolong over pumping will blow the sucker, so when it blows you replace it.....


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