My Pirhana won't recock and I can't figure it out - Paintball Forum - Paintball guns and gear forums
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Old April 21st, 2005, 09:57 AM   #1 (permalink)
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My Pirhana won't recock and I can't figure it out

I'm fixing a gun for a friend and I can't remember what it is that makes stacked-tube markers not recock. I've fixed this before, but just can't recall.

I can't remember the model on the gun, but it is a pirhana. I cock it and when I fire, it does a crappy little "brub" and won't recock. When I spin around with the gun in my hand so as to create more force for the bolt to slam forward with, it actually hits hard enough and recocks.

I've already taken the gun completely apart and reassembled it w/a little oil. I've also put a few drops through the ASA and fired 50 shots. I've adjusted spring tension, but I still can't figure it out.

Thanks for the suggestions to come.
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Old April 21st, 2005, 04:58 PM   #2 (permalink)
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full air tank?
clean reg?
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Old April 22nd, 2005, 01:44 AM   #3 (permalink)
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Yes, and no. I have a 50lb CO2 fill station. I said that I took the gun completely apart and oiled it.

Anyone else got any helpful suggestions?

You see, to make the above comment helpful, you would need to have at least given me a bit of advice or at least a hint at any problem that you might have had past experience with. You simply failed to do any of that for me.

I'm not a noob. I know when to research something for myself and when to ask for advice. I'm not an idiot. So, under the circumstances, I'm going to ignore your posts.
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Old April 22nd, 2005, 11:58 AM   #4 (permalink)
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Wwoowww.... cool down...
check all your bolt assembly orings, that includes the hammer.

take your reg apart, clean and lube the piston.

was That helpfull?
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Old April 22nd, 2005, 12:05 PM   #5 (permalink)
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Hammer O-ring A seriously worn or missing Piranha hammer o-ring will cause the gun to cycle uncontrollably. Do not replace with a bottle o-ring! A bottle o-ring on the hammer will also cause the gun to cycle like it is full auto. A old Piranha hammer o-ring is clear in color, like a bottle o-ring, but much softer. Newer Piranha hammer o-rings are blue. Hammer o-rings do not usually go bad unless you are not oiling the gun or not using synthetic gun oil.

Sear Pin - A sear pin that is coming out of the marker will cause the gun to cycle. Lightly tap the pin back into place with a hammer. If the problem continues, remove the pin and re-instal it on the other side of the marker.

Sear A rounded, chipped or broken sear could cause the gun to cycle. A worn sear will cycle increasingly as the sear wears out more and more. A truly worn sear will cycle until the cocking rod is stopped or the tank is out of air. Inspect by taking the grip frame off the receiver and looking at the back tip of the sear. If it needs to be replaced, knock the pin out of the grip frame from the left-hand side so it slides out the right and replace the sear.

Hammer If the lip of the hammer that catches the sear has mushroomed up or been bent, it will not catch the sear properly and the gun will cycle uncontrollably. Replace if that edge is deformed. There is an anti-rust coating on the hammer that will scratch off where the sear touches it. This is part of normal wear. You're looking to see if sear has actually deformed the lip of the hammer.

Regulator too Low - If your regulator (tank or vertical regulator) is set too low, then your velocity will be low and the marker will not recock properly. Raise the pressure.

Turbo Valve Some of the older discontinued turbo valves have been known to cause a gun to occasionally cycle especially if used on CO2. If everything else has been checked, it could be the turbo valve. Replace with a stock valve.

Cup Seal Loose Make sure the valve pin is tightened snug into the cup seal. If it won't tighten and it is just spinning in the cup seal, the cup seal is damaged or stripped. Replace. If the two are not screwed together at all then the cup seal is already stripped. Replace. Newer guns have a cup seal that is molded to the valve pin. They can not unscrew and cause this problem.




does that help?
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Old April 22nd, 2005, 12:59 PM   #6 (permalink)
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it wouldnt be the sear cause it doesnt go full auto, but purps then uncocks.. as in low on air.

its either your reg, your hammer, or your valve
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Old May 10th, 2005, 07:58 PM   #7 (permalink)
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you need to check out whither or not you have sear is facing the right direction
if that doesnt work AIM me and ill try and walk you through it if iam on
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Old May 11th, 2005, 05:52 PM   #8 (permalink)
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My dad has the same problem with his gun and when a buddy of mine took it apart he said it was missing a plastic part that is suppose to catch the seer. I dunno kno what he was talking about and wether or not its true. My friends B-daddy also has the same problem
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Old May 11th, 2005, 11:56 PM   #9 (permalink)
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i dont know anything about plastic catching the sear....but, i know the hammer does and usually is what is messed up...that or the o ring on the hammer.
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Old May 12th, 2005, 05:08 PM   #10 (permalink)
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sear
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Old May 20th, 2005, 05:33 PM   #11 (permalink)
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Yeh the same thing happned to my guna nd i cant fix it..i took it to ECX and the guys said it might be the O rongs bcuz some PMI's take certain Orings but he didnt have them..and now i dont know where to get them
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Old May 22nd, 2005, 10:04 PM   #12 (permalink)
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well, xpaintball.com should have the proper "blue" hammer o ring, if that is the one you are looking for. there a re a few other sites out there that have them, but, if you got a clear one, give PMI a call their number can be found at www.buypmi.com, and im more than positive that they will send you a blue one for free, and could possibly help you out with a whole kit (for a price) if you really want one.
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Old May 22nd, 2005, 10:56 PM   #13 (permalink)
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Same problem with my sister's R6 *No E-forced* worked fine for a while, then chopped paint almost every shot, I cleaned the gun numerous times and took it apart, tryed all springs included and still nothing.... I got that blub and no cocking sound too...
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Old May 22nd, 2005, 11:28 PM   #14 (permalink)
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chopping... is prolly the detents, piranha detents wear out.
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Old May 23rd, 2005, 08:19 PM   #15 (permalink)
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^^^^ probably right. get some timmy detents (extra hard), they dont wear out near as fast and cost the same.
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Old May 23rd, 2005, 08:24 PM   #16 (permalink)
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yup
or call pmi and sound really mad, they'll send you a bucket full of them.
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