FX royale internals question

Forums PCP Airguns FX royale internals question

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    jking
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    Asa-j, took my bottle and air block off and here is what mine looks like. There’s the loose washer that I guess is for spacing and then just right below is the end of the regulator. As Ernest was saying just grab ahold of that brass nipple sticking up with a pair of needle nose pliers and pull out the regulator. Yours does appear to have some sort of washer embedded on top of the regulator. Maybe once you have the regulator out you can get that off the end. OH! watch out, even after you remove the bottle and the gauge goes to zero you still have stored air pressure behind the firing valve. In stead of dry firing it down, which I’ve heard from a couple of different people is a big no-no slowly loosen up the stock bolt adapter that screws into the bottom of the receiver to relieve the pressure. SLOWLY or you might pee your pants. When I put the air block in the receiver I put a little silicone grease on the loose washer to hold it centered up on the block before I screwed it back together.
    Jimmy


     

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    Asa-J
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    Thanks, you guys are awesome.

    Dreuf – the black ring that looks like an oring in the photo is just a gap around the end of the reg it’s a deceptive photo.
    When I first removed the bottle the guage read zero, I did push the vavle stem forward via the hole in the block until no more air escaped BUT that was more by luck than judgement.  Is this the correct procedure in future? Thank you for the warning.

    Jimmy – loosening the stock bolt receiver is a good idea, and I know how scary that is when done fast because when I first got the Royale undoing the stock bolt also undid this, POP! I may have peed a bit that time ((:

    As all predicted on pulling out the reg via the brass tip I found an oring with a chunk out of it (rear, external) see pics (sorry just noticed first one is out of focus and gun is reassembled now..) but you can still see the damage.


    So new oring and the fast leak is solved!!!  But I do wonder how it happened, could it be to do with the order that I de-pressurised the gun when I first dissassembled it?  Anyway I will be getting some more of these orings in readiness…

    Not sure about the slow leak should see by tomorrow.

    Asa

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    jking
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    Good deal Asa, so what did you find out about the plastic looking washer that was on top of the regulator? Hopefully that will cure your slow leak as well.
    Jimmy

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    Asa-J
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    Thanks Jimmy, that washer wedged onto the valve seat appears to be another belville washer and I have had no success getting it off yet… pretty confusing that it’s there at all to be honest.  It looks to be exactly the same dimensions as the loose one that sits on top like in yours, and I wonder if it got squashed into the valve seat by the bottle in manufacture and so they put another one in on top.  Like to think that wouldn’t happen of course, but unless it’s a new thing which is why other Royales I’ve seen online don’t have it, but if so why?

    Bottom line now is I don’t know if it is causing a problem so plan to leave it, unless anyone thinks different?

    Asa

     

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    sniperlabyo
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    Your going to damage that oring again if you don’t put a proper size shim/washer. Like I said the shim prevent that oring from blocking the vent hole—well the orings isn’t going to stop the pressure so it will make a hole on the oring as you see it now.

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    jking
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    I guess they just used what ever was handy to throw in there, in this case maybe two belville washers/springs not realizing that the od was the same as the ID of the top of the regulator thus crushing one in flush and using the second as an actual spacer. Mine is definitely too big to be pushed down in the regulator top. Eventually you can remove that washer and go with something larger. At least now you know what to look for.. Oh, you used the term valve seat, not sure if you realized that is not the valve seat just the regulator. The valve seat is in the upper section of the receiver where the hammer, stem and seat resides. Part #D18 for the seat and D14 for the valve stem/pin.
    Jimmy

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    dreuf
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    Good news man

    To check if the leak is still there after pressurized your gun put a tape on the vent hole.

    On my Boss i had to rework a bit the reg to stop a really small leak from there. I removed 1mm of the overall reg body length and now it is ok. Before doing such mods control carrefully all critical dimensions : reg orings position regarding to the block and the vent hole.

    Mechanically speaking I had no other option. One oring was sitting .1mm from the vent hole with reg in place.

    My boss is from 2014 I think that such issues have been solved since there and it should be ok for you.

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    dreuf
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    I forgot: try to unscrew the brass part to see if you can get out the washer. There is an oring behind and if it leaks one day you will be in trouble to replace it …..

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    Asa-J
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    “jking”Oh, you used the term valve seat, not sure if you realized that is not the valve seat just the regulator. The valve seat is in the upper section of the receiver where the hammer, stem and seat resides. Part #D18 for the seat and D14 for the valve stem/pin.
    Jimmy

     

    
Thanks Jimmy – don’t know where I got that from, you’re right, amazing anyone understood what I was on about at all!

     

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    Asa-J
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    “sniperlabyo”Your going to damage that oring again if you don’t put a proper size shim/washer. Like I said the shim prevent that oring from blocking the vent hole—well the orings isn’t going to stop the pressure so it will make a hole on the oring as you see it now.

    Thanks sniper, 
I see what you’re saying now I’ve got the reg out, and that makes sense of what has happened – there is a second, loose washer on top of the reg but it’s not in the photo, but once during all this I did put everything together without the loose one in and pressurized… that must have been when it happened. 

    Good news is that it has held its pressure overnight, only down a couple of bar but that was probably just settling after the fill, so we shall see…  I put some PTFE tape in the thread of the pressure guage seeing as that washer is missing so that may have been part of it.

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    Asa-J
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    “dreuf”I forgot: try to unscrew the brass part to see if you can get out the washer. There is an oring behind and if it leaks one day you will be in trouble to replace it …..

    
good point, I will try and do that.

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    Asa-J
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    Yes, managed to get the previously stuck washer out of the top of the reg!!  So all is as it should be…

    …nearly.

    Interesting thing now of course is that if I only put one washer back in as the shim then if it gets wedged in again it will not do its job, but putting both in makes tightening the bottle pretty stiff so maybe too much – presumably a single new wider washer would be better?  Does it matter if this a belville type or could it be anything?

    … sorry this is dragging on, can’t thank you all enough.
     

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    jking
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    I’d just try a thin but larger OD washer like mine. Make sure it’s just a tad smaller than the size as the OD of the regulator. You can probably find one a little thinner than what most washers are at a “nut and bolt” store. More of a machined washer.
    JK

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