RT Classic L10 Tuning - Leak...

[vintage]

could be a bad bolt.

[nak81783]

Mondoatx,

To answer some of your other questions.

A. On/off top oring is #16 in diagram below. #15 is too for the valves that have it.

B. Yes, aft is rear. #9 oring in diagram below. And it's OK if it stays in the back half of the valve.

As others indicated, sometimes it's just a bit of crud, lack of oil, or an oring that's not quite broken in that can cause a leak. This is, I believe what was causing the burping/slow fire with triggered pulled, but we're most likely beyond this for the Level 10 issue. Let us know how the shimming and bolt swap I detailed above works out, and we'll go from there.

[Mondoatx]

Nak and everyone,

Thanks for all the help here... took the gun to the field today with the level7 installed... Chrono'd fine... 275-290 (had never chrono'd before LX or otherwise)...

I thought everything was good... took it out on the airball field for the first game of the day... Played a quick 3x3 and shot out everyone on the other team myself after losing a player...

Unfortunately by the end of the game (as gratifying as it was) I was leaking out of the velocity hole... this was with 800 PSI input... last night I tried the SHP tank (1100 LBS) and the gun freaked out and started leaking from 2-3 different places (sounded like the banjo, velocity hole, and somewhere amid ship) after maybe 5 shots... so anyways... went with 800 PSI this morning... had the leak out of the velocity hole... switched guns... played some more games (hate wasting field time teching)...

At the end I took my last 50-75 rounds to the chrono with the RT classic to see if I could replicate the leak out of the velocity hole (when I had aired it up a couple of times without firing throughout the day it was not leaking)... after maybe 20-30 shots the leak came back... I fired a bunch over the chrono... I was getting some erratic velocity... 20-30 FPS from shot to shot... 270-300 maybe... and every once in a while it would shoot a super low velocity shot of maybe 180-190...next shot 270-300... so needless to say... all is not well with the gun... and whatever it is needs to be addressed to eliminate the variable before I try to get the LX working again...

Here is what I have done to the gun so far in my rebuild efforts:
Changed every O ring... from a fresh AGD parts kit... (including bolt spring, power tube tip o ring, inner power tube o ring, o ring inside the on/off, o ring on top of on off - #16, #9, #7, #2)
Also installed a brand new sear
Aslo installed a new high pressure piston (for the LX)
Also new banjo o rings

The only thing i haven't replaced is possibly #11... and definitely not the reg pin assembly...

So I guess I am going to check #11 (to see if I replaced it and if not see if I have another) and order a reg pin assembly (the gun is likely close to 20 years old and it may be original)... and go from there.

If that doesn't address the issue I will repost a fresh thread as this is no longer about LX... this is about figuring out what the underlying problem is and THEN I can try LX again...

Let me know your thoughts on what could be causing these issues... or if I am on the right track checking #11 and the reg pin assembly.

Thanks everyone!!

M

[athomas]

The # 11 oring is the regulator seat and will cause leaking out the adjuster if it leaks. Your regulator pin assembly should be fine, but you should replace the 2 orings on it. The kit should have those 2 orings and the plastic split washer that separates them.

Make sure everything is free of dirt or dust including the cavity where the regulator piston assembly sits.

[blackdeath1k]

Have you pulled out item 12 and replaced the 2 Orings on that? Them 2 got overlooked on my classic for 15 years. They caused all kinds of erratic leaks before they finally puked up all together. Seals to replace them are in the kit.

Edited to add......Athomas beat me to it.....

[Nobody]

Stop using a SHP tank. No more leaks...

Don't know why people keep using them. They cause more issues than any advantage you could get.