1. The Forum Rules have undergone some minor changes and updates.  Please take the time to read them; it will only take a couple of minutes of your time. By doing so, you lessen the chance of incurring the wrath of the moderation team or making yourself look foolish to other members.

    90% of users posting adverts in the Sales forums need to be reminded to read the rules as their posts are wrong.  This is unnecessarily time-consuming and will no longer happen - if your advert doesn't follow the Sales Rules it will be deleted and you'll have to start all over again.

    To close this box once you've read it (and the Rules), click on the X in the top right-hand corner.

    Thank you.

    AGF Staff



    Dismiss Notice
  2. A reminder of one of the Forum Rules:

    'Behaviour

    Do not make inappropriate or offensive posts - including threats, harassment, swearing, prejudice, defamation, deliberate insults or name-calling, other negative remarks about this forum, its moderators and administrators or your fellow members. Even if this is just your own personal opinion, RESPECT YOUR FELLOW MEMBERS.'

    There have been changes made to our censoring software in an attempt to help with this growing problem.

    Click the X in the top-right-hand corner to dismiss this notice.
    Dismiss Notice
  3. Dear members,

    Our membership (like our country) consists of people from all walks of life; different in far more ways than can be listed here and each with a different view based on their experience of life - regardless of their colour, religion or cultural heritage. Every single person in the UK has been born of mixed race – we are a multi-coloured and multi-cultural country.

    As many of you are aware there are a handful of individuals amongst this membership that persist in making provocative, inflammatory, racist and otherwise offensive comments. This has been happening across the forum to a certain degree but is most especially prevalent in the Adult section.

    The moderation team has tried to stay on top of this, however unfortunately because of the ‘offensive’ nature of much of its content we don’t monitor the Adult section quite as much as perhaps we should. As a result much of this behaviour has gone unnoticed unless it has been reported to us. While the team always intended to take a "light touch" approach to the Adult section it would seem that some people aren’t quite adult enough to be left unmonitored after all.

    This behaviour is, and always has been against Forum Rules as well as the specific stipulations of the Adults forum and it will no longer be tolerated. We feel it's time to draw a line in the sand and as such from this point onward offenders will receive an immediate and permanent ban from the forum.

    In order for us to achieve our goal of restoring the forum to the friendly and tolerant place it once was, we ask that ALL members be mindful of the content they post and help us to stop unacceptable behaviour by using the 'Report' tool at the bottom of any offending post - the results of which can be seen only by Admin/Moderators.

    You should all receive a copy of this message by PM. 

    To close this message box, click on the 'X' in the top-right-hand corner.

    Dismiss Notice
  4. Hotmail block emails from us entering your inbox. Unless you can setup a safe sender you will not get activation emails from the forum. Please use an alternative provider or complain to Hotmail.
    Hotmail addresses include.

    @Hotmail.co.uk @Hotmail.com @outlook.com @Live.com
    Dismiss Notice
  5. Postings on Politics, Religion & Controversial Off-Topic Material

    The majority of users do not want to read about these subjects and people have left the forum as a result of it – this is after all an 'Airgun' Forum. It’s all very well to say they don’t have to read it if they don't want to, but as most of us use the ‘New Posts’ button there is no easy way to avoid it.

    All AGF staff members are in favour of people being able to discuss what they want, but we have to draw the line somewhere if it is upsetting other users. We don’t want to read about these topics either.

    IMPORTANT- The discussion of politics and religion is no longer allowed anywhere on the forum (including the Adult section).  The only exception is if it's airgun related - they must be put in the Airgun Related Politics section..

    We will not tolerate bullying or personal attacks, racism or any other offensive 'isms'. we will remove these topics from the forum, we will not give you an area where you can abuse each other. We will not hesitate to ban offenders.

    To clear this text box, click on the 'X' in the top right-hand corner.

    Dismiss Notice

Advice AA s400 not pumping up

Discussion in 'Anything Airgun Related' started by Garbs, Apr 18, 2014.

  1. Garbs

    Garbs Active Member

    Messages:
    49
    Likes Received:
    0
    Location:
    Manchester
    Hi guys I have an AA s400 which I haven't used for some time. I have come to top up my rifle with air from a Hills pump and although the pump appears to be working fine no air is going into the gun. The dial on the gun says 150 and I was going to top it up to around 180. The pump holds pressure and the dial goes up to 200 bar when pumping, but no air goes into the gun. I have cocked the gun and attached and unattached the connector several times. The pump is not leaking and the bleed valve on the pump is obviously closed. Could the valve on the gun be stuck or damaged?
    Any advice appreciated.
     
  2. crazymadfish

    crazymadfish Well-Known Member

    Messages:
    94
    Likes Received:
    0
    Location:
    stockton on tees
    Not sure if this would work have you tried dumping the remaining air in the rifle or give it a short blast of air just a thought others should be able to help more
     
  3. mattyts

    mattyts Donator

    Messages:
    6,201
    Likes Received:
    163
    Location:
    Yorkshire
    Get someone with a bottle/working pump to confirm the pressure and ignore the gauge on the gun,they're crap at best
     
  4. Egg

    Egg Major Poster

    Messages:
    8,460
    Likes Received:
    13
    Location:
    Dunfermline
    IIRC from when I had one, when the pressure gets too low and you're hand-pumping it back you need to leave the bolt out (cocked but not returned to the breech) and then pump. Unsure from your description if yu've tried that or not mate - give it a bash.
     
  5. ditchdangler

    ditchdangler Well-Known Member

    Messages:
    89
    Likes Received:
    6
    Location:
    Ashford, Kent
    Phone AA they are very helpful
     
  6. Fubbytucker

    Fubbytucker Busy Member

    Messages:
    554
    Likes Received:
    12
    Location:
    Rotherham
    I'd repeat the advice about having it cocked before pumping/filling when it has got very low.
     
  7. r10hunter

    r10hunter Honorary Member

    Messages:
    10,150
    Likes Received:
    4,687
    Location:
    lincoln
    It sounds to me like the fill valve on the gun is not opening. A little bit of dirt etc is jamming it.

    I would try firing off a good few shots to drop the pressure in the gun and then try again with the pump.
    You can let the pressure gauge on the pump go to 240 or so if you are sure air is not going in to the gun. The pressure will build up and up in the pump and the release as the fill valve unsticks.

    If that does not work a sharp blast with an air bottle may free it.
    If that does not work fire the gun until it dumps all it's air remove the fill valve and clean it.
    Cheers Andy
     
  8. adiwoo

    adiwoo Member

    Messages:
    19
    Likes Received:
    0
    Location:
    Merseyside
    I let my s400 get to a very low pressure once and it wouldn't fill up, try cocking the bolt and filling it then.
     
  9. cloverleaf

    cloverleaf Super Moderator Staff Member Mod/Admin

    Messages:
    21,847
    Likes Received:
    30,181
    Location:
    Oxfordshire
    Absolutely - don't think this is the usual "failure to cock from empty" issue; sounds like something wrong with the inlet setup. One of my rifles suffers the same problem (not had chance to pull it to bits yet) but with a cylinder pressure of 150bar I've tried stuffing 250bar into it (from a pump) and the valve still refused to open - so it's evidently something fairly significant.

    I have my theories about the valve type, but I'll wait and see how it pans out before posting owt.

    OP - just out of interest what's your serial? I'm guessing somewhere around 050000 or a bit later?
     
  10. Garbs

    Garbs Active Member

    Messages:
    49
    Likes Received:
    0
    Location:
    Manchester
    Thanks for all your help guys. I have had a bit of a plink about this afternoon and got the pressure down to around 120 and then tried again. Pumped her up to 250 and still no air going in. All I can think of is that the valve must be sticking and that the pressure in the gun is stopping the valve opening.If i dropped the pressure down to around maybe 80 and try again or get a blast from a cylinder I think it might just give it the jolt it needs. My serial number is 100**3 if that is of any help.
     
  11. Garbs

    Garbs Active Member

    Messages:
    49
    Likes Received:
    0
    Location:
    Manchester
    Problem solved :)
    All I ended up doing was dropping the pressure in the rifle to 100bar connecting up the stirrup pump , pumping it up to 250 bar and leaving it connected! Ten minutes later there was a loud hiss and what I can only guess was a stuck valve freed itself. Now pumps up no problem.
    Thanks for all your help guys.
     
  12. cloverleaf

    cloverleaf Super Moderator Staff Member Mod/Admin

    Messages:
    21,847
    Likes Received:
    30,181
    Location:
    Oxfordshire
    Nice one - I've just stripped the inlet valve in my rifle and found there to be nowt visually wrong - nothing stuck or damaged, seal in good working order.. the only slightly suspicious thing perhaps being an abundance of oil. Put it all back together and it's working fine now.

    Ta for the serial - it's later than I thought and it now appears that this problem can occur in any of the later style valves - not just the earlier variants as I'd initially though.

    Anyway, yay for getting it sorted :p
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice