FX FX Crown with leak through side hole… regulator or gauge?

[Doc_pafumo]

I apologize because this issue has probably been discussed before, but regarding the Crown I can’t find anything with the search function. Until now, I haven’t had any problems with my Crown… maybe just too much pressure drop from the bottle during normal shooting strings, but the bottle has never emptied completely.

Today I replaced the bottle pressure gauge with a digital one. When pressurizing, I heard a leak coming out of the right side hole of the block, (atmospheric?). Possibly the leak was already there before, and when I removed the stock to replace the gauge I just noticed it today.

This leak means I should replace the regulator O-rings and the internal block one, right? It has nothing to do with the replaced gauge, correct?

 

[jps2486]

When you de-pressurized the gun, all the O rings in the regulator were exercised. They were likely older, brittle and dry, hence the leak. The leak coming from the hole in the side is probably from the O ring in the internal block, but while you are there, replace them all.

 

[wdr2]

I had this happen. I sent the block to Utah Airguns and they installed a new regulator and replaced some o-rings in the block. Works great now.

 

[Trucker3573]

The leak from the atmospheric hole is the regulator. Amp regs leak A LOT in my experience. Will need rebuild.

 

[Trucker3573]

Forgot to mention there are several good vids on YouTube about rebuilding it. Sub12 airgunners and 910 airguns both have good ones. Mostly straight forward just two of the orings are bit of a PIA to deal with. Especially the one down in the gun where the reg body screws in. It’s hard to see and you have to be careful removing it so as to not scratch the surface behind it. Makes it one of the more inconvenient regs in the hobby to deal with. Kind of a double whammy as for me they have also been by far the least reliable. FX needs to completely redesign it. Go to a bottle reg or something and lose the screws into the gun body type.

 

[Doc_pafumo]

The regulator has been replaced. Indeed, it was the O-ring inside the block, it was dry and cracked. Good Lord, how difficult it is to remove that damn O-ring while taking all the necessary precautions. Insertion is easier, but yes… this O-ring is hateful. Everything is working again.