Umarex Umarex Gauntlet SL30 leaking

Hard to say, could re-fill and try to find leak with spray bottle of soapy water. Sounds like a substantial leak so might even be able to hear. Most accurate diagnosis with leak pinpointed. WM

Check your de-gassing screw. I had to tighten it on mine.

edit: I have the original Gauntlet 30, bolt action. But the rest of the gun should be the same.

how often are people seeing this issue with leaky valves on the sl2

esd02 said:

how often are people seeing this issue with leaky valves on the sl2

Click to expand...

I just bought a new sl30 and on its second fill i got the notorious fill port leak.Thanks to another thread on here looks like i can just get the check valve o ring it sounds like i need from harbor freight..gotta love AGN.Otherwise umarex tells you to send the whole gun in on your dime for a simple/cheap o ring as they apparently don’t stock them

Airgun561 said:

I just bought a new sl30 and on its second fill i got the notorious fill port leak.Thanks to another thread on here looks like i can just get the check valve o ring it sounds like i need from harbor freight..gotta love AGN.Otherwise umarex tells you to send the whole gun in on your dime for a simple/cheap o ring as they apparently don’t stock them

Click to expand...

Sometimes all it takes is running a small drill bit in and push. Fixed more than few fill probes that way. As long as they were 10mm or NPT, never had any luck doing that on 8mm.

But fill probes are cheap on AliExpress and swapping out is a lot quicker. Fix at your leisure.

Fill probes should be in every pcp owner's spares kit along with a large variety of o'rings. The two high failure items.

I'm just learning about all of this...embarrasingly I had to look up what a fill probe was/does.....anyway, i found a parts source of several items that might help you like the rings, rebuild parts, plugs etc.

hope to get my first air rifle soon

I know that Mr. Troy Hammer who is very active on this forum deals closely with the manufacturer and has a lot of knowledge and experience with this platform....likely he can help you. You can pm him on the forum.

also, thought perhaps this link might help you as well: