classic valve, level 7 bolt stick (kinda)

[DoctorStox]

hey, i tried a search and everything kept coming up with level 10 and x valves and stuff. i have a mag with a classic 1 star valve and level 7 bolt. i just got the mag. first it had a leak out the velocity adjustment bolt, but after changing some seals and o-rings and messing with the velcoity, i got it fine. i gased up my 45 3k and shot for a while, the tank had 2k psi and i got near 300 shots. i left the gun alone for a little while, gased up my 68 3k (full) shot 5 times and got horrible bolt stick. now, whenever i pull the trigger the bolt moves forward 1/4 inch, stops and starts leaking air. while doing this, it moves back and forth the 1/4 probably due to the spring pushing back and pressure pushing out. Is this a valve problem? on/off pin problem? or sear problem? and how do i fix it, lmk.

[DoctorStox]

come on guys, i need to solve this problem

[athomas]

What is the output pressure of the 68-3000 tank?

Does it still do it when you hold the trigger in after a shot?

If it still does it after you hold the trigger, then it is an on/off problem. If it only does it if you pull the trigger and then release, then it is powertube oring/spacer/bolt spring problem.

It sounds more like an on/off problem.

[DoctorStox]

i think it is an on/off problem because i tried replacing the powertube spacer and spring and nothing. i am going to refill my 48 (i know it's a 850 output) and see if it works, even though i am sure my 68 is 850 too. if it is an on/off problem, what do i look for and how do i fix it? should i just get a new on/off? and which kind, arent there a few kind out now?

[DoctorStox]

okadiliokio, i'm an diiot. i turned my velocity up and the bolt stick went away mostly. however, there is a leak coming out of my velocity adjustment nut. i dealt with the leak and shot a few shots but then i got a bolt stick, but it was mroelike short stroking so i thinkit was due to my tank being close to 600psi. i changed my reg seat a few days ago so it's not that leaking, what else could it be? and yes, gun is oiled.

[athomas]

You should have more in the tank than 600psi for the gun to charge properly, but a level 7 will function down to that level and lower. The gauge may be inaccurate though, so the pressure may be lower than that.

Take the regulator assembly out of the back of the valve and clean it. Check the oring around the reg piston assembly. If it is bad, replace it.

[darrickws]

yes, you need a new regulator assembly

It has gone bad. That is what happened to two of my mags. When it goes bad, it leaks air out the back when you turn the velocity up. As it gets worse, eventually you cant get the velocity (pressure) up enough for the gun to shoot. When you try to turn it up, it leaks, but if you dont turn it up, it cant build up enough pressure to shoot.

Either send it to AGD for it's one star fix, or buy a reg assembly for the $20 plus shipping.

Good luck!

[Orion33]

It has gone bad. That is what happened to two of my mags. When it goes bad, it leaks air out the back when you turn the velocity up. As it gets worse, eventually you cant get the velocity (pressure) up enough for the gun to shoot. When you try to turn it up, it leaks, but if you dont turn it up, it cant build up enough pressure to shoot.

Either send it to AGD for it's one star fix, or buy a reg assembly for the $20 plus shipping.

Good luck!

it think this is happening to my mag...exactly what is wrong with it?

how much would it cost to send to AGD to fix?









but o, also thinking about getting lvl 10...

i bought it used and its sorta old...but it came with 2 68 classic level seven bolts...but the other bolt doesnt have on/off valve or powertube..its has a regulator tho...i havnt tried using hte other bolt...but i may if it turns out the one on right now has "gone bad"

[darrickws]

The regulator assembly is like a steam release on a pressure cooker

They are used to insure that the pressure going into the gun doesnt exceed its boudaries and blow a seal, and that the gun wont shoot much over 300 fps. They made these to start releasing pressure (air out the back) around 320 fps +/-. As the gun gets older, and used more the regulator slowly loses its ability to hold that much pressure and starts releasing air sooner and sooner. Pretty soon, you cant get the velocity over 200 fps or even high enought for the gun to fire. The level 10 will make things even worse!! As stated before, the old regulators were set to start releasing around 320 fps for safety. Well the level 10 requires MORE air pressure, so the reg will leak even sooner. My RT shot fine at 290 fps with level 7...with the level 10 I counldnt get it over 230! I thought I installed it wrong until talking to AGD. You can buy a new one from AGD at www.airgun.com for $20 plus shipping. Or call them and see if they would replace it free with the rebuild if you have a star on your valve.

it think this is happening to my mag...exactly what is wrong with it?

how much would it cost to send to AGD to fix?

but o, also thinking about getting lvl 10...

i bought it used and its sorta old...but it came with 2 68 classic level seven bolts...but the other bolt doesnt have on/off valve or powertube..its has a regulator tho...i havnt tried using hte other bolt...but i may if it turns out the one on right now has "gone bad"

Level 7 is the bolt only, same as the level 10 (bolt not valve)...you must be talking about the valve. Try unscrewing the velocity nut all the way out, remove the spring set and pull out the regulator assembly. Switch the 2 and see if it fixes it. Make sure to grease the spring pack with lithium grease if you got it (just the spring pack, nothing else). Good luck!

[Dayspring]

The part is called a reg piston.

[darrickws]

Yes, it is Regulator Piston Assembly

I tried to put a link in the last post, but AGD's parts server was down it is up now, so here it is:

Regulator Piston Assembly

And it is only $15 for the Classic valve (was $20 for the RT). The shipping is a little high, but as long as you are paying for it, buy some extra o-rings or the new p/f plug.

Good luck!

[Orion33]

i have 2 bolts, 2 regulators..but only one power tube and on/off valve, which are fine...

ill try swapping the regulators....and my gun also came with 2 extra regulator pistons with springs, and the springs that go in side the velocity nut...

my gun shoots at 250..if i turn the velocity up it vents air out the back...
but i have never tryed hte other regulator or changed any of the springs/ piston because ive only owned it for 2 weeks

[Orion33]

i also think it might have been as simple as the regulator seal gone bad...because when i field stripped my gun last i noticed the seal wasnt in the slot on the regulator...so i dunno..my gun had another problem with the power tube inster threadings..so i left it witht eh proshop and havnt seen it since..so i havnt been able to try anything else yet

[darrickws]

ya, if 250 is highest you can go...

then reg is on its way out. Switching them should help as long as other one is in good condition. Good luck

[darrickws]

not the reg seal

if it was the reg seal, then it would just mean a huge diff in velocity. either drops or big gains, not leaking out the back. Leaking out the back means reg piston 95% of the time, if shooting under 300 fps.