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Old 11-28-2010, 04:14 AM #1
TexF18
 
 
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Join Date: Nov 2005
Location: Omaha, Nebraska
geo not firing

i have a geo one with gst and when i pull the trigger the soleniod triggers and air dumps out the frame and no bolt movement. Ive replaced all bolt orings and taken out the niod cleaned and relubed, i have also replaced the battery.

Im guessing the niod is blown but thought i would double check
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Old 11-28-2010, 09:50 AM #2
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It is hard to blow the noid on a geo, it's more like a part of piece of the noid is a problem.

First thing to do is take the grip off the frame so you can see the noid. Check the noid gasket first, most people over tighten the screws and roll the gasket.

If the gasket looks good put a "thin" layer of lube on it and just snug the screws.

If it still leaks try and service the spool o rings on the noid

Also while you are at it clean the check ball too
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Old 11-28-2010, 04:13 PM #3
Uziel Gal
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Yep, if all the air is being dumped, but the bolt isn't moving, then I would suspect that the solenoid back check ball isn't sealing, or that the vent hole behind the can o-rings is too large.

The back check ball should be clean and round, and not have any damage - dents, nicks etc.

The optimum size for the ball is between 4.00mm and 4.10mm. A little larger is fine, but smaller isn't good.

The vent on the can should be just a tiny pin hole - 0.3mm wide.
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Old 11-29-2010, 12:01 AM #4
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so its most likely the ball. because it does NOT leak it just dumps air when fired
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Old 11-29-2010, 01:29 AM #5
Uziel Gal
It's not a Geo2, honest..
 
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Air leaking around the back check ball wouldn't be heard as a hiss or anything - the air would still be held by the solenoid until such time as it switches. The whole purpose of the back check is to prevent air being able to get back to the solenoid after entering the firing chamber.
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