Tuning I can't get my probe to seal properly

[Keevenbb]

first off sometimes replys don't get to me here so you can email me.I have three Hatsan PcP rifles and I can't get air into the cylinder. When I use my Hatsan hand pump it begins to build pressure and before any air goes in the cylinder the air escapes from the entry point of the fill port. I have tried several different o rings with four different Hatsan probes to no effect. The guns are fully cocked and the probe has silicon grease. I know they can be filled because someone came by my house last year with a scuba tank and filled the tanks I had just fine,we did not try my probes. I am convinced it I had thick enough o rings this would be the fix, but I'm tired of buying and trying then crying wash and repeat so if someone could please ,oh God please I just want to use my guns as that's what I enjoy as an amputee with a crippled other foot,still on on my "feet" though help in some way it would mean alot, thank you and please excuse my rambling. [email protected]

 

[BigTinBoat]

Regular Hatsan probe with the 1/8"bspp thread and an adapter to hook foster too? If so take 2 wrenches and tighten the adapter to the probe. I've had several probes start leaking there after sitting. Sounds just like it's coming from the probe where the o-rings are.

 

[dizzums]

... also, i have a couple of hatsans and in some cases the probe can actually be inserted too far ...check closely and measure if necessary that the orings are centered on the fill port orifice, on one of my guns i have to leave the probe ~4mm from fully pushed in ...

 

[HARLEY01]

There is a one-piece probe on Amazon that is much better than the supplied version 

 

[Keevenbb]

Thank you ,I had wondered about that ,but everything is right and it's definitely the o rings at the lower end of the probe not making a seal as I can feel the air coming from there, I'm going to try plumbers tape over the o rings and maybe I pushed it in to far. 

 

[Keevenbb]

If anyone wants to come by and help me figure this out I live in Windsor California. I will also pay well to see this problem fixed it you are interested. Any other ideas are welcome but I think I've tried almost everything. I just don't know what I'm doing wrong. Is there o rings thick enough to actually protrude a bit so they aren't level of power than the probes diameter?

 

[Guest]

Keep it in longer

 

[KatoKevin454]

I ordered these from Ebay they work great and not a bad price for 20 o-rings, https://www.ebay.com/itm/333995347015?hash=item4dc3ac8c47:g:Te8AAOSwTUZdXhCw

of course you can get them through the O-ring store but you need the size

 

[jarmstrong]

Hatsans are famous for the sharp edge in the fill port, it cuts the o-rings, a small nick is all it takes, it will leak!!! :-( it is where the fill port narrows from a funnel shape to a straight tube,,, sand, file, smooth, get that sharp edge gone... these are cheap enough

https://www.ebay.com/itm/124740355884?hash=item1d0b1ac72c:g:WYAAAOSwOEVgrD8H

but you still need new o-rings for the probe, but fix the fill port first or you will just cut the new o-rings again