power tube leak

[baconquilt]

automag gods, i need help.
ok so i just watched the TK videos and it seems that my leak down the barrel is from a power tube oring not sealing correctly. I got this mag after it was sitting for awhile so i bought a spare parts kit.
i went ahead and replaced all the orings that i could that were supplied with the parts kit. afterward i still have a leak down the barrel.

so a couple questions-
1) does the fact that it is a minimag valve matter? i think not.
2) could the orings that came with my kit be the wrong size possibly?
3) spacer kit would/could fix this?

also when i pulled the trigger, the leak stopped down the barrel, but i heard a tiny bit of air passing through the on/off. well it sounded like the air pressure in the on-off built up until it sealed 100%. this lasted a few seconds before it sealed all the way. this kind of ruled out the on/off valve as having trouble until i heard that little bit of air.

also something that came to mind was that im using the aka extreme lube. ive read stuff that says only use autolube or another kind. i was under the assumption that most of these air tool oils were the same or almost the same. could using the wrong kind of lube make weird stuff happen like orings not sealing properly?

at one point it sounded like a bunch of liquid was flowing through the valve like a bubbling sound. could this be from using too much oil?

sorry for the n00b questions but id really like to get back into mags and this is not helping lol.

[OPBN]

Sounds like you need the next size down carrier for the LVL 7.

[baconquilt]

i dont believe i have a lvl 7 in there. unless they came stock on minimags. it is an A.I.R. valve.
and what would the carrier be?

[OPBN]

Pretty sure it is a Level 7 actually. Pics would remove all doubt. It's actually a spacer, not carrier. I was typing while doing something else.

[baconquilt]

ok i thought the spacer could be it. i would have to order a kit to play around with.
it looks similar to #3&4 but that part in the middle is more recessed.

it looks pretty old school to me

[OPBN]

A pic of the actual bolt would be best, but a quick way to figure out is ... does the brass powertube tip have a hex head on it or a slot where you can use a coin to unscrew it?

[Spider-TW]

it looks similar to #3&4 but that part in the middle is more recessed.

That sounds like a foamie bolt, minus the foamie.

[baconquilt]

it very well could be missing the foamie. the brass tube tip has a slot for a coin. and the power tube screws into the valve body housing.
i wont be able to take a pic till later tonight.

[OPBN]

the brass tube tip has a slot for a coin.

Indicates Level 7 bolt. It could be the wrong size spacer. It could also be that the O-ring on the powertube tip is bad. The powertube does screw into the valve, but shouldnt unscrew very easily. If it does, there is a thin red O-ring that seals this connection up and it gets messed up pretty easily. You have a few possibilities here.

[baconquilt]

hmm, when i took the power tube off the valve, there was no oring. i do remember there were fine threads for this but like i said no oring.

it has a 225 spacer in there now. could be a tad long?

[OPBN]

There should be a clearish urethane o-ring at the end of the threads towards the powertube tip. If you don't have one, that would be your culprit. As far as I know all Lvl 7 PTs had this O-ring. The 2 or 3 that I have here and looked at all did.

[baconquilt]

on the brass piece? that was there.
although i didnt replace it as it looked ok and i didnt have that size oring.

[OPBN]

on the brass piece? that was there.
although i didnt replace it as it looked ok and i didnt have that size oring.

Yes, on the brass piece. Those probably rarely wear out, so move down a spacer size and see if this helps. There also should an o-ring inside the powertube on the valve side that the spacer rests on.

[baconquilt]

yes that is correct. i replaced that one and still have a leak. i ordered a sizer kit and some foamies from AGD so that will be here in a few days.

for now, thanks a lot for the help OPBN

[OPBN]

Not sure if you have this, but:

http://www.airgundesignsusa.com/downloads/valveexplodedview.pdf