Artemis P15 leaking air

[ClemsonTiger11]

Hi! 

New to the forum need assistance with my Artemis P15 leaking air. I am assuming it's a bad o-ring somewhere but if anyone has advice on which ones to check first (most likely to fail) and instructions on how to take the gun apart to access the o-ring that would be most helpful.

I filled the gun to 250 bar 2 days ago and now it is at about 40 bar. I have done nothing with it but store it in the case. I noticed no leaking when I filled the gun, and it did not do this the first 3-4 times I have filled it, only the last 2 times. The first time I noticed the leak was after the gun had been sitting for about a month and figured it was normal for the air to slowly leak over that period of time. However 48 hours does not seem normal. Any help would be greatly appreciated. 

 

[Mikepr]

put a condom and the bottle and check 

 

[Bowhunter73]

Clemson pull your stock and where the air tube connects to the breech there's a allen screw that's how you bleed the air out it has a small ball bearing under it to seal it check there first I had that problem last week couldn't get the bearing out so I ended up putting a piece of a lead pellet in and tightened the allen screw in it hasn't leaked since but I'll probably have to shoot it empty from now on to work on it.

 

[PumaCarl]

Do a YouTube search for Custom Bolts, he does a five part series of videos on taking one apart.

 

[ClemsonTiger11]

Thanks for the replies. Question: How tight should the air tube be screwed into the breech (where the air tube screws into the gun right behind the bleeder hole area)? I noticed that it was only hand tight. I unscrewed it about 4-5 turns and saw a green o-ring located there and screwed it back just hand tight because I didn't want to break anything. I am wondering if that should be tighter or if that o-ring could be bad. I also realized my gun came with a black metal tool that looked like a socket with a hole running through one end. This looks to be used to tighten the pressure gauge. When I turned it I found it unscrewed the front of the air tube and when I tightened it down I couldn't get my air fill probe into the air fill slot so I had to back it out about 3-4 turns. Is it okay to leave it unscrewed? And should I try to tighten or look for o-rings around or under the pressure gauge? Sorry for so many questions. 

 

[Mikepr]

AGAIN !

Probably your leak is from the front end of the bottle, fiil probe oring, behind the valve

That happens because of the bad oring quality and the fast fill

The front valve is endless when you screw it, so when the threads are in the bottle align the gauge ant leave it

Everything must be tighten by hand and put a liitle amount of silikone to protect orings from dammage

If the leak isnt from the front, use shave foam and check for bubbles

 

[Vetmx]

Not much on a pcp needs to be screwed on tight, If a pcp was assembled with gaskets, then things would have to be tight. The orings seal not based on how hard you tighten them. Keeping your gun barely hand tight will make it a pleasure to work on in the future. There are a lot of places a P15 can leak from and it will leak from all of them until you replace all your orings with good ones. Now is a good time to learn your gun by taking it apart and replacing them all. I still have my original orings in the barrel. They seem to be holding up fine. There are two on the barrel when you take it off and one in the chamber where the pellet goes in. You should just do the air tube and fill probe orings first. My guess is its your probe oring. Don't use that tool to unscrew your gauge, I doubt that's your problem. Unscrew your air tube from the valve, if the valve plenum stays on the tube just unscrew the whole thing but remember how the cone shaped spring goes in there. Once you have everything unscrewed from the tube you can use a long rod to push out the regulator if it stayed in the tube. Replace every oring you see in your pile of parts. Your fill probe oring is up inside the gauge end cap. Its a tiny one.

 

[Keyman62421]

Just had same problem. O ring under air fill valve. Take screw out , find o ring in OE kit sent with gun. Replace. Make sure not to set the tube end cap too deep. Won't be able to get probe in hole!

 

[ClemsonTiger11]

Attempting to replace O-ring under air fill valve. Thanks to you all for your help. 

 

[ClemsonTiger11]

So I replaced both o-rings the green one in the first picture and the small black on under the full screw at the other end of the air tube. However they both looked in perfect condition to my eyes. Anyway, I decided to unscrew the pressure release screw and this “gunk” was in the screws and down in the hole. What do you guys think? Normal stuff? 

 

[Mikepr]

Looks like locktight
Use shave foam to see if it leaks

Fill the gun slowly, fast fiil is the reason of damage the valve oring

 

[Hubertus]

you have to use loctite or threat sealant for the air bleed screw.

and wait at least 12 hours beforce refilling the gun.

 

[Seadog]

I have had the same issues- does any one have a list of o ring sizes for the P15 ?

the ones that come with the gun don't last

 

[MBG]

I have had the same issues- does any one have a list of o ring sizes for the P15 ?

the ones that come with the gun don't last

View attachment 1567795011_21113674655d72a74373fc07.60009550_P15 O Rings.pdf

 

[ClemsonTiger11]

Hey guys. So I filled my gun up today and it is leaking around the pressure release screw. I put blue lock tight on the screw when I replaced it and waited a long time before trying to fill. Any suggestions? I am guessing I will have to bleed all air again and try lock tight again? 

 

[jarmstrong]

it does not seal with the threads, I use nothing on the threads

there is a 4 mm ball under the screw that does the sealing to the seat

when you loosen the screw the air is supposed to escape through the threads

 

[ClemsonTiger11]

So if air is leaking around the screw then either I need to tighten the screw down tighter to seat it properly against the ball value or something is wrong with the ball valve itself? Any potential fixes for this issue? Thanks all!

 

[jarmstrong]

I would clean and inspect before I crank down on the screw, it should not take all that much force to seal, just a good snug, it is a little screw

and to make sure the ball is still there

 

[Vetmx]

I agree. There must be a particle of something on the seat. Clean it out, clean the ball, drop it in and snug it up. Fill the gun and if it is still leaking, then I would lean on that screw a little more. Remember, the threads seal nothing on a PCP. Way too much pressure.

 

[ClemsonTiger11]

Thanks guys. Should the ball valve be able to fall out of the hole once the screw is out? Or does it come out of the end when you take the whole tank off? I seem to remember something round in the bottom when I unscrewed the release screw but I do not remember it moving and I know It didn’t fall out. I seemed to remember pushing on it with the end of the Allen wrench and it was suck in there and didn’t move any.