Hey, I just bought a used RT classic, its my first automag. Anyways, I am trying to gas up the gun but when I turn on the air, it just leaks (very fast) out of the back of the valve on the bottom half of the valve. I was wondering if someone could point me in the right direction to get this gun back up and in working order.
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"I aint nevea been to jail!" "What you want a cookie?" -
You mena it vents out of the velocity hole in the back? If so turn down your velocity. Maybie you have a bad o-ring in the rail or on-off?
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If it's leaking from the bottom edge of the back of the valve, it's not the valve that's leaking, it's the banjo bolt. This is the bolt in the back of the grip frame. Gas travels through it to the valve.
If this is it, remove it and and lube it. Then, put it back in. Do not screw it in too far. First, finger tighten it then gas up your marker. If it still leaks, get an allen wrench and slowly turn it until it stops, and no further.
If it's leaking out the whole in the middle of the back of the regulator, that is pressure venting because the velocity is turned too high or you have a bad o-ring.
Sounds to me like you're leaking out of the banjo bolt, though.Subbeh
"My wife might find my stashed Marker Money before then, and then boom-new patio furniture or some other garbage."
-1stDeadEyeComment
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I did some more testing and it is also leaking a little bit down the barrel. No the leak isn't comming out the little hole in the steel reg, its comming out between the body and the reg on the bottom half in back.
Thanks for the tip on the banjo, i'll take a look at that now."I aint nevea been to jail!" "What you want a cookie?"Comment
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Its not the banjo bolt, I just re-lubed it and did what you said by hand tightening it, then wrenching it slowly. Any other ideas?"I aint nevea been to jail!" "What you want a cookie?"Comment
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Make sure you are giving it enough air to cock. It requires a blast of air. Try using a stick to hold the bolt tightly to the valve while gasing up. Leave the barrel off when you do this."Using No Way As Way, Having No Limitation As Limitation." -Sigung LeeComment
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I called AGD and they said it was the orings on the banjo bolt. I just replaced the orings and it still leaks..."I aint nevea been to jail!" "What you want a cookie?"Comment
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Try the on/off o-rings.Except for the Automag in front, its usually the man behind the equipment that counts.Comment
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Alright, I've isolated the leak to somewhere in the general area of the banjo bolt. What I did was screw the bolt directly into the valve, without the grip frame and body in the way. I then took a small section of LP hose (cocker) and held it to the hole in the banjo bolt where the air comes from the body and into the gun. I covered up the other side of that hole and blew into the hose. The air came out the front of the powertube and no where else. However when I put everything together and blew into the macroline feeding the body, it leaked somewhere in the vicinity of the back or the grip frame/ banjo bolt area.
This being said I already replaced the o-rings on the banjo bolt and it still leaks. Could someone please take some pictures or show me a diagram of house this bolt is actually suppost to seal and look like?
This "leak" i am talking about isn't a small one. It's big enough that the gun actually never gets enough air to engange the trigger pin. It just all leaks out the back of the grip frame and the space between the valve and the body in back. I really fail to see how even a mis-shapen o-ring on the banjo bolt could cause a leak of this size. I have a feeling something is missing on my gun, because I did buy it used... I will have pictures up of my gun and banjo bolt later on today.
Thanks for your time"I aint nevea been to jail!" "What you want a cookie?"Comment
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"The Regulator Piston comes as an assembly that has a built-in blow off valve. Do not disassemble! Replace this part when air is venting out the back of your marker and you are shooting less than 300 fps." I think this just about describes your problem. Found it in the Technical Pages under the ReTro Valve Exploded Diagram. The parts can be bought at http://store.airgun.comComment
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I doubt that that thing blew, it goes at 3000 psi. I'm thinking on-off or banjo bolt. Maybie they didn't include a part.Comment
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Yeah I bought a new parts kit and fixed the leak in the banjo bolt. However now it just leaks down the barrel hardcore, I left it at the store too see if they could fix it... oh well."I aint nevea been to jail!" "What you want a cookie?"Comment
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That would be your PT spacer most likely. Shorter one I think. Or you need a quicker burst of air to gas it up. Possibly the PT o-ring as well.
Neway, good luck with it
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