banjobill Posted November 1, 2009 Report Share Posted November 1, 2009 hi, ive a s400 and had it for 5 years. its never been to the gunsmith but has been lubricated occaisionally. recently it is not holding any pressure for any lengh of time. its had around 10000 pellets through it. has anyone any ideas what may be causing the problem? manythanks banjobill Quote Link to comment Share on other sites More sharing options...
soreshoulder Posted November 1, 2009 Report Share Posted November 1, 2009 leaky seals Quote Link to comment Share on other sites More sharing options...
Tron Posted November 1, 2009 Report Share Posted November 1, 2009 Hiya mate, Ive had several AA 400 series rifles and they are very easy to strip, repair etc, it sounds to me that you probally have a fleck of dirt on the exhaust valve seating, an easy way of checking it out is to charge the rifle with air, then close the bolt, and then put the end of the barrel into thin oil or water, if its your valve leaking you will see right away because bubbles will be seen , Quote Link to comment Share on other sites More sharing options...
banjobill Posted November 1, 2009 Author Report Share Posted November 1, 2009 Cheers. would the fact that im pressurising it with a hills piump make any difference? Quote Link to comment Share on other sites More sharing options...
banjobill Posted November 1, 2009 Author Report Share Posted November 1, 2009 Cheers. would the fact that im pressurising it with a hills piump make any difference? Quote Link to comment Share on other sites More sharing options...
David BASC Posted November 1, 2009 Report Share Posted November 1, 2009 PCP's are, so I am told, prone ot dirt/ water ingress and this can effect the valve seals. Of ocurse it could just be other seals that are letting by - nothing lasts for ever these days! My suggestion is, that unless you know what you are doing and feel confident about it, get somone else to service the airgun - just my personal view. David Quote Link to comment Share on other sites More sharing options...
deadeye ive Posted November 1, 2009 Report Share Posted November 1, 2009 Refill ingress point is passing ...................Spray with fairy liquid and water mixture to prove ............................If that is the case I'll talk you through the repair via the PM route Quote Link to comment Share on other sites More sharing options...
deadeye ive Posted November 1, 2009 Report Share Posted November 1, 2009 Cheers.would the fact that im pressurising it with a hills piump make any difference? I did use a hills pump at one stage when charging my FAC version of this model .........................Alot of heat and moisture is generated which will cause problems over a certain time period . I believe a moisture eliminator is now fitted to this pump .I charge off a divers bottle nowadays Quote Link to comment Share on other sites More sharing options...
huntercarbine Posted November 1, 2009 Report Share Posted November 1, 2009 all seals perish over time. new 'uns needed matey Quote Link to comment Share on other sites More sharing options...
fergy Posted November 8, 2009 Report Share Posted November 8, 2009 Sounds like you need new seals. My 410 leaked from brand new and had to be sent back to Air Arms for new seals. It only took a total of 10 days from a RFD. Quote Link to comment Share on other sites More sharing options...
tweedledee Posted November 8, 2009 Report Share Posted November 8, 2009 it could be as simple as a little dirt on the filler probe.is it the older type with the ball bearing? if it is empty tthe gun of air and force the ball bearing in and out a few times before refilling.if not that try a balloon over the barrel overnight.my s400 leaked from the filler and also the pressure gauge.i took the stock off and dropped it in a bath of water. don`t get the trigger assembly wet.you may see a few bubbles.i oiled my gun well before doing this and cleaned it again after.only cost me a few quid to fix. Quote Link to comment Share on other sites More sharing options...
6br Posted November 11, 2009 Report Share Posted November 11, 2009 hi all the older airarms s400/s410 with the snap on type filler do leak from the ball at the end very common.ive serviced loads over the years and they are very easy to work on,just done one for a mate full strip down clean an degrease parts new seals new hammer spring crono at 11.5 ftlbs and he's very happy with it. Quote Link to comment Share on other sites More sharing options...
Clubshot Posted November 11, 2009 Report Share Posted November 11, 2009 No location As there are several good AA Members who are able to offer good Services With AA Part's I have a AA 400 in .22 - which I originally Sent back to AA Trouble is now that they Power Seal them - AT Include Service work - which you do not want done Check out the AA owners Board for more assistance BOB/R Quote Link to comment Share on other sites More sharing options...
Clubshot Posted November 11, 2009 Report Share Posted November 11, 2009 http://www.airarmsownersclub.com/ Quote Link to comment Share on other sites More sharing options...
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