Automag RT regulator leak lvl10

[athomas]

If both the valve pin assembly orings were bad, the unregulated air could go right into the volume chamber, through the reg pin valve assembly, and into the reg piston area. It would leak whether trigger was pulled or not.

If one or both of these orings was bad, the air would leak out the side vent hole. The back one would cause a full time leak as long as there was air. The front one would cause a leak only when air was present in the front chamber.

All your other observations and explainations were well though out and spot on.

[nak81783]

I knew I was forgetting the little vent hole. Couldn't remember where it was at on the valve in relation to all the orings. Thanks for setting me straight.

[Laku]

Good argument. You might well be correct with you hypothesis, at least I can't find no obvious faults in it.

[mick]

Is the general consensus the reg piston most likely bad?

[nak81783]

Lol. Yes. Sorry if I hijacked your thread.

You said you replaced the reg piston with a new one from Tuna. Was the old one bad? Did you try the old one to see if it works better? I've never replaced a reg piston in 15ish years of using my Mags, so I don't know how often they need to be replaced, how often the go bad, etc.

[mick]

No the reg was not bad. I needed a new higher pressure reg for the level 10 from what I read.

[Tunaman]

No the reg was not bad. I needed a new higher pressure reg for the level 10 from what I read.

I am going to send you another one out in todays mail. Send the other one back to me when you get a chance. Thanks

[vintage]

check the regulator valve pin assembly again. i have had problems with them where they looked fine but were still causing the leak. take the 2 o rings off and wipe them down and then reinstall them. i have had to do this 2 or 3 times before getting one to quit leaking.

just rebuilt one 3 times tonight before it quit leaking out the velocity adjustment hole.

[nak81783]

vintage,

Are all of your reg valve pin assembly issues on one marker or different markers?

Regardless, any number of factors with the reg pin valve assembly which do not allow it to properly float/reciprocate (e.g., swollen/dirty/damaged orings, worn/incorrectly assembled spring washers, etc.) could prevent proper reg seat sealing. This could allow unregulated air to get to the reg piston, which would then vent. That said, are you sure your reg seat oring is good? Is your leak exclusively out the back velocity adjustment hole, and nothing from either of the two side vent holes (one being the aforementioned by athomas)?

If you have to repeatedly clean/reassemble the same reg valve pin assembly, I would replace the orings, check for proper number and assembly of the spring washers, or just get a new one to rule out a combination of factors.

[vintage]

short story long version--bought this emag off ebay as non working(it is) mostly complete. low valve #. i go to rebuild the valve and the when i pull the pin assy. it comes apart leaving the o rings in the valve body. so i get a spare out of my parts box put new o rings on it put the valve in my other emag and it leaks out the velocity adjustment hole like mad. so i take it back apart pull the pin assy. take the o rings back off blow the whole thing off with canned air reassemble and repeat the leak. pull the pin out again and it comes apart so i dig my last pin assy. out of parts, blow it off put new orings on it and it seals. this is about the normal for me lately.

[nak81783]

Sorry for your frustrations. Sounds like there's something else going on, perhaps a combination of factors which are sending mixed signals. Odd that the reg pin valve assemblies are pulling apart when you extract them.

1. What all did you rebuild? Did you replace all seals?
2. Do you see any burrs/debris/damage in the hole where you install the reg pin valve assembly that could cause the tough extraction?
3. I can't remember, do the low number valves have two side vent holes on the valve, one on each half? Don't want to repeat my earlier mistake of forgetting about the side vents.

[vintage]

i've had several off of ebay, mcb, etc that have had stuck pins this last couple of years. i've had to pull a couple with side cutters and throw them out. i'm also out of reg pins and will now have to buy one if it happens again.

[mick]

Sorry for the delay in responding. Finally got around to swapping out the reg.

The new regulator fixed the issue and there is no longer a leak out the back. Gun shoots good now.

[Tunaman]

Sorry for the delay in responding. Finally got around to swapping out the reg.

The new regulator fixed the issue and there is no longer a leak out the back. Gun shoots good now.

Dont forget to send me back the other one so i can get credit.