19 replies to this topic

[Renegademilitia15]

My airtech is leaking, and as the description points out, I have no idea what to do. I push the pumping rod in, and then when I pull it out the air leaks out of the barrel.
Blackfox, you sold me this at2k, if this has happened before to it please state so.

Thanks in advance. I don't usually post help threads, but I have no freaking idea what to do.

[Magic]

Make sure the o-ring is good on the pluger, also add some e-tape to it. I had a similar problem with my crossbow. It was airtight when not primed, but when it was it wasn't airtight at all.

[BustaDartInYOurAss]

Hold it under water to figure out where the leak is, and then cover the leak with JB weild.

[Retiate]

Does it hold pressure at 2 pumps? If it does, then it's probably the rubber gasket at the front of the air tank. Otherwise, there's probably something wrong with your check valve/pump assembly, or something. You might have to replace the whole pump.

[Renegademilitia15]

Retiate: No, just on one pump, and then when I pull it back out to pump it again, the air leaks out the barrel. I'll check on the pump assembly real quick but when I looked at the valve from the front it looked ok.

NerfOnFier: The at2k is a air powered gun, not a springer.

BustaDartInYourAss: I know where its leaking, its out the front. And covering the coupler with JB weld wouldn't help. At all.

[Magic]

Retiate: No, just on one pump, and then when I pull it back out to pump it again, the air leaks out the barrel. I'll check on the pump assembly real quick but when I looked at the valve from the front it looked ok.

NerfOnFier: The at2k is a air powered gun, not a springer.

BustaDartInYourAss: I know where its leaking, its out the front. And covering the coupler with JB weld wouldn't help. At all.

I'm aware that the at2k is pump. I own two. I'm saying that the plunger tube may be looser toward the front of the plunger. E-tape or another o-ring may help your problem.
Edit: Post pictures if you can, it may help us get better results.

Edited by NerfOnFier, 05 September 2008 - 11:36 PM.

[keef]

Yeah, This is a pretty common fuckup in a airgun. Pretty easy fix too.

First, using a Sharpie, make a straight line across the airtank. From the barrel to the trigger pin.

Then, cut it in half with a hacksaw, making it as straight as possible.

Clean off the plastic debris.

Plumbers goop/ epoxy putty the tank straight with the line made earlier, and let it sit for 2 days.

Then, dry pumping it, it should hold pressure if you glued it straight and evenly.
I did this to 2 2k's, and 1 titan airtank, all STILL work beautifully.

Edit:

Nerfonfirespeltwrong- Plunger is only with springs..... Bladders with controlled release guns, and airtanks with most airguns.

Edited by keef, 05 September 2008 - 11:36 PM.

[Renegademilitia15]

Wait, so you cut in half and then glue it back together? Are you sure thats right? It sounds a little damaging to me.

[BlackFox]

First, using a Sharpie, make a straight line across the airtank. From the barrel to the trigger pin.

Then, cut it in half with a hacksaw, making it as straight as possible.

What the heck? I've never heard of it done down the middle.

Here's what I did:
-Make a mark parallel to the barrel on the tank as a reference
-Cut the tank in half perpendicular to the barrel using my pipe cutters.
-glued down the gasket
-re-aligned the tank using the mark and gooped it together again

Renegademilitia15, How long is your barrel again? You did a nested coupler replacement, right? I did notice that the at2k would leak out the front when any downward pressure was on the barrel. It shouldn't be that sensitive, but because of the angle of the coupler I had on there, the pin was under stress and would leak when moved.

My suggestion is to do this mod and maybe add a spring to the firing pin or something. Then dremmel away as much of the plastic under the coupler as humanly possible. I didn't try very hard and as a result, the barrel was at like a twenty degree angle.

Ok, hope that helps. If not, we'll work on it at my place sometime.

Edited by BlackFox, 06 September 2008 - 12:33 AM.

[Renegademilitia15]

Thanks guys! I think I get it now. I'll work on that tomorrow and post my results.

[Renegademilitia15]

Alrighty, update. I guess my ear was wrong or something because I found out a totally different problem. After inspecting the internals carefully, I saw a thin line of a cut on the airtank covered in plumbers goop, so I think black fox already did the cut open the airtank thingy. And, after listening even more meticulously to the internals I realized that air is not even getting to the airtank, much less leaving the pump. I think a peice of debris or something must have got in the tube connecting the pump to the goo gauge, because there is a bend in the tube there and I think that is the problem.
Hopefully I explained that proficiently enough, if not, pictures are coming soon.

[NerfCrazy]

Sorry blackfox didn't notice that there. Yes I did read your entire post but I usually never notice those.
I do always do that with my at2k though.

Edited by NerfCrazy, 06 September 2008 - 02:44 PM.

[BlackFox]

After inspecting the internals carefully, I saw a thin line of a cut on the airtank covered in plumbers goop, so I think black fox already did the cut open the airtank thingy. And, after listening even more meticulously to the internals I realized that air is not even getting to the airtank, much less leaving the pump. I think a peice of debris or something must have got in the tube connecting the pump to the goo gauge, because there is a bend in the tube there and I think that is the problem.

I've only performed surgery on one 2k, if I remember correctly and it wasn't that one. If there's a crack, it's not supposed to be there.

Hmm, debris in the tubing shouldn't cause a leak. Are you sure the problem is with the tubing? Sounds more like the check valve or goo gauge to me.

If you need to you can do part two of this. I do this with every 2k I get.

You know, I already gave him that exact same link in my first post. Don't worry, reading is overrated.

[DTReaper]

http://nerfhaven.com...wtopic=9018&hl= This is how I fixed mine its a writeup complete with pictures and detailed instructions. If you have any problems ask and I'll try to help.

-DTR

[BlackFox]

http://nerfhaven.com...wtopic=9018&hl= This is how I fixed mine its a writeup complete with pictures and detailed instructions. If you have any problems ask and I'll try to help.

-DTR

I know you're the guy that made the write up and all, but seriously, this is the third time the link was posted.

I would just like to advise everyone else who reads this in advance that the link you are about to post has already been posted.

What the heck? Here it is again.
http://nerfhaven.com...wtopic=9018&hl=
It was even better the fourth time.

Reading is good for the soul.

[Renegademilitia15]

Ok, most of you guys misunderstood me. Again. But thats probably because I didn't explain it enough. On the Airtech that Blackfox gave me, there is a permanent marker line with a strait cut going along the entire circumference of the airtank, that is covered in plumbers goop. I do not need to do DTReapers mod. It has already been done to this airtech. The Air from the pump is being trying to get into the tubing that leads to the airtank. It is not getting there. When I release pressure from the pump rod, all the air that I pumped into the pumping tube goes out. I put it next to my face and I could feel it wooshing out. Please read this, understand it, and help me. PLEASE

[Retiate]

When you release the pump, the air comes out the pump tube? If that's the case, then it sounds like your check valve is broken. I'd probably just replace the pump on it, you'll get better reload times if you replace with a bigger one too.

[BlackFox]

When you release the pump, the air comes out the pump tube? If that's the case, then it sounds like your check valve is broken. I'd probably just replace the pump on it, you'll get better reload times if you replace with a bigger one too.

I've tried it. (Sorry, it's missing pictures because it's an older thread) It sounds simple, but it's not so easy. I'm starting to get off topic. Yes, replacing the pump with another nerf pump will fix the problem. But if it's non-nerf, it most likely will not have a check valve thus leaving you with the same problem.



I tried simply sticking a check valve on the end, but it still didn't work. Check valves seem to be the bane of nerfers and I'm working tirelessly at finding a solution short of ordering a new check valve off McMaster.com.

asldfjpwo; Now I'm pissed. Just get your pump shotgun and we can scrap the 2k.

EDIT: Oh yeah, if you can feel air coming out of the tube, a simple fix would probably be to smother it in plumbers goop. Please tell me you've tried that...

Edited by BlackFox, 06 September 2008 - 06:25 PM.

[Renegademilitia15]

No, its coming the same place where the pump goes in. Oh well, guess Ill have some other guns to do then.

Thanks for you guys help.

[BlackFox]

No, its coming the same place where the pump goes in. Oh well, guess Ill have some other guns to do then.

I was only kidding. Can we fix it? YES WE CAN!
Seriously, find the leak and get a pic up. That would be most helpful. Then take it over to my house.
I'm starting to despise air guns.


Something tells me we're going to get flamed for letting this go on so long.