need your help guys. advice needed on air arms s510

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aa_limited

Member
Jan 27, 2016
1,229
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ontiaro, Canada
guys I have an fac s510 and the air cylender is complelty out of air and my hill pump wont pressureise the cylinder at all as all air goes straight out the barrel
no matter how fast I pump with the hill pump I have.

any suggrstions on how I could or can get enough pressure started to be able to fill this gun with air because as of now no matter how fast I pump and with the gun cocked and uncocked no air will stay in the gun..no pressure will even start to build up to close the fireing valve.

please help thanks a lot guys
 
On an AA410 I had and ran out, cocking and pumping like crazy - 50/60 strokes per minute, more? - and got lucky.
On the 410 it would have been easy to remove the striker spring , not sure about the 510.
On the 410 if pressure gets low, maybe 80bar, it will dump all the air, just the design and how sprung it is.

One blast with scuba or remove all pressure on the striker/hammer & try pumping?
John
 
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Why did the gun empty? Did it bleed off on it's own? Generally the transfer valve area is the issue when it blows out the barrel. Why I ask about why it's empty, is that on most air guns the valve could use a little pressure to hold the valve against the seat to seal. Let me tell you I have never had my S510 apart but that seems to be the issue on most pcps.
https://www.air-arms.co.uk/wp-content/uploads/2014/11/S510F_and_SUPERLITE_FAC_ISS2.pdf
 
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Try standing the gun up on it's butstock and pump., Maybe with you at the top of the stairs with the gun resting on them, or some other fashion but try to make sure it is as close to vertical as possible. If this doesn't work make sure you put the valve spring back in and tightened down the brass pot as well.
 
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dirte I emptied the gun my self. through the the male foster fitting I was putting on. I had to remove the aa t bar I hate so I had to remove the air before I fitted it.
not that I have a foster fitting on it I cant fill the gun with a pump . the pressure wont build up no matter how fast I pump.

I tryied it both cocked and uncocked.. like I said before.

​when the air got below 70ish bars the rest drained out the barrel. on its own .
 
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"aa_limited"dirte I emptied the gun my self. through the the male foster fitting I was putting on. I had to remove the aa t bar I hate so I had to remove the air before I fitted it.
not that I have a foster fitting on it I cant fill the gun with a pump . the pressure wont build up no matter how fast I pump.

I tryied it both cocked and uncocked.. like I said before.

​when the air got below 70ish bars the rest drained out the barrel. on its own .
Click to expand...
I would encourage you to find someone to give it a charge of air to hold the valve against the seat to seal. I would do a check on other guns I have worked on with a regular compressor with a rubber tipped nozzel. 120psi could give you the seal. Worth a try. I also understand that pcp airgunners are few and far between that could give you a charge. Good luck!
 
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dirte thank for the help.. I do have a scuba tank. 4500 psi. and I have the proper fittings to attach to the rifle.

​ any suggestions on me using my carbon 4500 psi tank on the s510.?

​the tank is brank new got it 2 days ago.

​the gun lost all its air 2 weeks ago. I just haven't had time to get to it till now. and I bought the tank 2 days ago
 
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"aa_limited"guys I have an fac s510 and the air cylender is complelty out of air and my hill pump wont pressureise the cylinder at all as all air goes straight out the barrel
no matter how fast I pump with the hill pump I have.

any suggrstions on how I could or can get enough pressure started to be able to fill this gun with air because as of now no matter how fast I pump and with the gun cocked and uncocked no air will stay in the gun..no pressure will even start to build up to close the fireing valve.

please help thanks a lot guys
Click to expand...
I'm no airgun technician by any stretch of the imagination, but it sounds like an o-ring issue.
 
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AA limited, You really need a fill assembly that has a good gauge on it to watch while your filling the gun with a Scuba or SCBA. You can watch the gauge on the gun as well but don't take your eyes off of it while filling. With just a little too much of cracking the fill valve you can easily overfill your air tube. Of course I know you know this but be careful regardless. I bet the extra flow will seal the valve and you'll be on your way.
Jimmy
 
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Right, it does dump at 70-80 bar, as long as that is what happened there is nothing wrong just hit it somewhat fast ( but not a full fill just until valve stem closes) with HPA and you'll be all set. 
IF AA is still using the " z block" for the air gauge it takes much longer to read correctly than most gauges. 110bar should seal it right up.

John
 
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