At dday there was someone in my unit who got a new tac one and it worked fine then stopped working and acted like it was low on air when the tank was full meaning the trigger was spongy but wouldn't fire. I found gunk in his valve when trying to find the problem, possibly teflon tape. Loosening the field strip screw allowed it to fire but he still got bolt strip after messing with both gripframe screws and you can't make it fire only one shot. The velocity is also inconsistent. Could he just need to break it in or could it be the reg is clogged or should I tell him to send it in?
-
Il n'y a point de sots si incommodes que ceux qui ont de l'esprit. -
Was the gunk green looking? -
Debris in the regulator and/or on-off area can cause all sorts of problems. Give the valve a good cleaning.Except for the Automag in front, its usually the man behind the equipment that counts.Comment
-
The gunk was white.Originally posted by athomas
As for cleaning i did that, but there may have been gunk that entered the the actual reg itself i'm thinking. This still doesn't explain the bolt stick he was getting and we tried nearly every combination of tightness in the rear and front trigger frame screws.Il n'y a point de sots si incommodes que ceux qui ont de l'esprit.Comment
-
The white gunk sounds like it could be grease.Originally posted by snoopay700
The valve is the regulator. Any place that has an oring or and air passage needs to be cleaned.
As for bolt stick, remove all the powertube shims. Use the largest carrier that does not leak. Always use the same white powertube oring when changing carriers. If the largest carrier that does not leak, causes bolt stick, then you need to change the white powertube oring and go through the tuning process again.Except for the Automag in front, its usually the man behind the equipment that counts.Comment
-
I already know all of that, and when i said regulator i meant the reg piston, since that's the actual regulator part of the valve. I meant that i don't know if things could get screwed up by the gunk getting inside the reg piston assembly, but i cleaned out the valve completely and it was still having these issues. That's why i thought it may be the reg piston, and if it wasn't i was going to tell him to send it in to AGD. Every other thing that i tried when teching his marker didn't seem to work, and i couldn't try a different carrier cause he didn't have them on him.Originally posted by athomasIl n'y a point de sots si incommodes que ceux qui ont de l'esprit.Comment
-
No, gunk inside the piston wouldn't hurt it other than perhaps affecting the over pressure value. The thing that affects velocity consistency in the regulator piston is its ability to move. This is where dirt on the piston can cause issues. It acts like a scraper. But, I don't think it would cause bolt stick issues. That is almost always a carrier issue. Gunk in the valve would most likely contribute to leaking or inconsistencies.Originally posted by snoopay700
Is the body sitting flat on the rail? Perhaps something got under the pim and is preventing the body from sitting flat.Except for the Automag in front, its usually the man behind the equipment that counts.Comment
-
Was there a gap between the trigger and the sear rod? Could have been that after shooting it for a bit the sear rod turned in some if it didn't have loctite on it. That wouldn't explain the change in velocity though.
Also which spring did it have in it? I had a problem with first shot bolt stick on one of my X-vales once, and after changing out just about every o-ring that I thought could have allowed the dump chamber to leak out, I figured out it was just the silver spring needed to be trimmed down a tad bit more. It would only do it on the first shot, and then after that it would fire fine, until I trimmed the spring down more, and it worked great.Comment
-
athomas - thanks, that's what i figured (didn't see how messing with the over pressure valve would make it so there wasn't enough pressure to fire), and even if that was the cause of the inconsistencies it didn't explain the bolt stick. This explains why i thought that it was a problem with the trigger frame screws, i figured it came tuned from the factory and so the carrier wasn't the issue, and like i said even if it was he didn't have the other carriers. I didn't see anything, and he never took it apart and it was working before that. It was also his first time using it.
fishinmishin - There was a gap now that i think about it, i didn't give too much thought about it, i thought the gunk was preventing the on/off pin from extending all the way, but when i later checked it there was none. I'll tell him to check that out. The change in velocity could simply be the gunk that may be left over or needing to be broken in more (i doubt it's the latter). I also think he had a silver spring, but the problem with the stick was more often just not going far back enough to reset which is making me think it's the wrong carrier, although occasionally it was only going halfway, but this can possibly be attributed to the same thing.
Thanks a ton for trying to help, if you think of anything else feel free to put it, i'll let you all know how it's working when i hear from him next.Il n'y a point de sots si incommodes que ceux qui ont de l'esprit.Comment
-
The tuning from the factory is generic. A few people have had problems with it. It always pays to tune it yourself. He'll have to get some carriers.Originally posted by snoopay700Except for the Automag in front, its usually the man behind the equipment that counts.Comment
Comment