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Prolite gas leaks out barrel

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McLeopold View Drop Down
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    Posted: 08 September 2005 at 3:50pm
I have a prolite marker that leaks gas out of the barrel when I screw in my CO2 tank.

I've checked the form archives and all I saw that was similar was something about a cup seal, but no metion of how to fix it.  Does anyone know how I can fix this problem?

Scott
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Strife_17 Quote  Post ReplyReply Direct Link To This Post Posted: 08 September 2005 at 6:23pm
yup happened to my 98c prolly a cup seal. um. i took mine to my local shop they had it fixed in 5 minutes. so im sure it won't take that long or cost that much if anything for labor.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote ANARCHY_SCOUT Quote  Post ReplyReply Direct Link To This Post Posted: 08 September 2005 at 7:07pm
Ya same i had mine leeking a while back and replaced the cup seal worked fine after that.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Pro_Carbine Quote  Post ReplyReply Direct Link To This Post Posted: 09 September 2005 at 9:19pm

It cant be the valve right?

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Post Options Post Options   Thanks (0) Thanks(0)   Quote The Guy Quote  Post ReplyReply Direct Link To This Post Posted: 09 September 2005 at 10:23pm
are you cocking it before you put on your CO2?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Enos Shenk Quote  Post ReplyReply Direct Link To This Post Posted: 10 September 2005 at 4:05pm
Well the prolite valve uses a couple o-rings around the outside diameter of the valve. If one of them is damaged, you can get leaking down the barrel.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Thanatos Quote  Post ReplyReply Direct Link To This Post Posted: 12 September 2005 at 5:25am
My PC had that problem, beside when i was to stupid to cock the thing, all i did was strip and replace the o-rings and oil it up,it was good as new. It would be a good idea to do that anyways i usually strip my marker completly every other game.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote McLeopold Quote  Post ReplyReply Direct Link To This Post Posted: 12 September 2005 at 3:29pm
Yes, I've cocked the gun before and after I put air on it.  I've shot it several times as well.  It appears as if the rear bolt doesn't move all the way forward when I pull the trigger.  The gun does recock though.  The bolt does move all the way forward when I shoot it without air, and obviously doesn't recock.

This is a very fast leak that seems to get worse the more I tinker with the gun.  Does that sound the same as everyone who had cup seal problems?  Also, how the heck do I take the value and power tube out?  They are stuck in there tight.

Scott
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Enos Shenk Quote  Post ReplyReply Direct Link To This Post Posted: 12 September 2005 at 4:19pm
Originally posted by McLeopold McLeopold wrote:

It appears as if the rear bolt doesn't move all the way forward when I pull the trigger.  The gun does recock though.  The bolt does move all the way forward when I shoot it without air, and obviously doesn't recock.


That much is normal. The majority of the force holding a valve closed is the air pressure inside it when it is gassed up. Without a gas source, the bolt will move the valve easily.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote clownshooter Quote  Post ReplyReply Direct Link To This Post Posted: 19 September 2005 at 8:57pm

I think that there may be a misconception here concerning the cup seal in a Pro-Lite and Enos can correct me if I'm wrong. The cup seal is located within the Pro-Lite valve assembly. I may be somewhat slow when I take my stuff apart, but if I had a shop nearby where the airsmith could replace the cup seal in my Pro-Lite in 5 minutes, heck, I would let him (or her) fix all my stuff. That is assuming a complete disassembly, and not starting with a partially disassembled Pro-Lite. The cup seal in the valve assembly can be replaced, but it's not a job for the mechanically disinclined and why get aggravated when a replacement Pro-Lite valve costs about 30 bucks?

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