Diana Bandit fill probe leaks

[BassMan]

I just got a Diana Bandit and the fill probe leaks. The first 2 times I filled it it was fine but the 3rd time once the pressure got up to about 1000 psi the outer most o-ring on the fill probe pushed part way out and leaked all the air. I replaced it with the o-rings that came with the gun but it still did the same thing. I was thinking of getting other o-rings. Has anyone else had this issue?? What size o-rings should I try??

 

[Scotty1]

I just got a Diana Bandit and the fill probe leaks. The first 2 times I filled it it was fine but the 3rd time once the pressure got up to about 1000 psi the outer most o-ring on the fill probe pushed part way out and leaked all the air. I replaced it with the o-rings that came with the gun but it still did the same thing. I was thinking of getting other o-rings. Has anyone else had this issue?? What size o-rings should I try??

The o-rings on the probe need to be greased with silicone grease to prevent that from happening. Also check for a sharp edge or burr at the fill port entrance. It doesn’t take a lot to damage those o-rings.