airbag suspension fiat probs

Discussion in 'Motorhome Chat' started by tambo, Jul 25, 2014.

  1. tambo

    tambo Read Only Funster

    Joined:
    Jun 21, 2014
    Messages:
    875
    Likes Received:
    637
    Location:
    Dunfermline fife scotland
    My mh is based on the fiat ducato maxi chassis and has the rear airbags fitted which I think is original spec on this van and not aftermarket .....Unfortunately mine seems to leak on both sides but more so on the drivers side.

    I had a leaky rear shock which I spotted a month or so ago and as I was going to France for a fortnight stuck a new set of 1800 kg original spec shocks on it , I'd hoped this would solve the airbag leak but doesn't seem to have been having to inflate them 3 or 4 times a day :(

    I've felt all round the connections at the games and valves etc under passenger seat and around the bags themselves but can't feel any leaks ....just wondered if anyone had had any similar probs ....im hoping it's just a case of leaky hoses or something as the bags themselves look to be quite pricy

    Just got home this evening so hoping to have a look at it in depth over the weekend
     
  2. Tootles

    Tootles Funster

    Joined:
    Sep 14, 2013
    Messages:
    9,012
    Likes Received:
    30,960
    Location:
    Lancaster
    Give Dave Newell a ring. His add comes up top left. He can talk you through the problems, and he's brill. (y)

    01952 587702

    http://www.davenewell.co.uk/
     
    • Like Like x 1
  3. tambo

    tambo Read Only Funster

    Joined:
    Jun 21, 2014
    Messages:
    875
    Likes Received:
    637
    Location:
    Dunfermline fife scotland
    Cheers il give him a bell in the morning
     
  4. Peter & Elaine

    Peter & Elaine Funster

    Joined:
    Aug 30, 2012
    Messages:
    3,967
    Likes Received:
    6,462
    Location:
    Roobarb land
    Option 1
    Get a tin of air leak detector from local truck parts suppliers and spray around bags pipes and fittings you will soon find the leak
    Option 2 (cheaper)
    Mix up some washing up liquid with water and use a small water sprayer it works fine our fitters at work use it all time
     
  5. tambo

    tambo Read Only Funster

    Joined:
    Jun 21, 2014
    Messages:
    875
    Likes Received:
    637
    Location:
    Dunfermline fife scotland
    Ok well i inflated the bags today to 6 bar and sprayed all round the bags etc ....no obvious signs of leaks and there's no joins in the hoses between bags and the junction valves under the passenger seat.

    I'm unsure what these valves do .....They have a red screw knob on the top with a + and - on them doesn't seem to make much difference where they're positioned as to how much air goes in etc so anyone any idea what they're for?

    I tried phoning dave newell but he's closed till 5th August

    I'm stumped at the minute as to what's wrong with them im wondering if taking it to a petrol station and over inflating them with a tyre inflator may work better than my cigarette lighter compressor as it won't go past 6 bar .....i read somewhere online that sometimes over inflating them can cure leaks .....there's obviously a leak somewhere as one looses all pressure in an hour and the other about 2 hours when vehicle is just sat still

    Any ideas guys ?
     
  6. keith

    keith Funster

    Joined:
    Aug 25, 2007
    Messages:
    3,258
    Likes Received:
    1,612
    Location:
    Ecclefechan
    It is recommended to raise the pressure to around 80 psi and leave for a week. The thinking behind this is as the pipes are plastic they may bed in under higher pressure. This recommendation came with mine from Dunlop in their instruction sheet.

    I think like tyres they will go down a little over time as they have the same valves.
     
  7. tambo

    tambo Read Only Funster

    Joined:
    Jun 21, 2014
    Messages:
    875
    Likes Received:
    637
    Location:
    Dunfermline fife scotland
    See that's the thing I've been putting 6 bar in them which is equivalent to 87 psi and yet they're flat within a couple of hours the drivers side loses pressure completely within the hour and the passenger side about 2 hours yet there's no obvious leaks :(

    Google search doesn't find anyone close to me neither that deals with air suspension
     
  8. Peter & Elaine

    Peter & Elaine Funster

    Joined:
    Aug 30, 2012
    Messages:
    3,967
    Likes Received:
    6,462
    Location:
    Roobarb land
    I know it's not in your area but try
    Armitages trailers at knotingley West Yorkshire he may be able to help
    He fitted mine and seems like a nice chap

    It's got to be a leak somewhere
    Don't put more than 100psi or you will blow something when mine where fitted the fitter put in 100psi left it 10 minutes then let it down to 80 psi and told me never go over 80 psi
     
  9. tambo

    tambo Read Only Funster

    Joined:
    Jun 21, 2014
    Messages:
    875
    Likes Received:
    637
    Location:
    Dunfermline fife scotland
    Yeah I've come to that conclusion too as it keeps going down so has to be leaking but im buggered if I can find it lol.

    I'm going to try inflating them at the petrol station tommorrow I might try 100 psi just to see if that may seal it .....a friend has also suggested nitrogen as it's supposed to not leak the same way air does ...local Kwik fit does it

    That failing im going to have to remove bags try inflating then dropping in a bucket of water I think .....though I'm inclined to think it's the gauges or valves under the seat that's leaking rather than the bags .....its one of those annoying things
     
  10. tonyidle

    tonyidle Funster

    Joined:
    Aug 6, 2013
    Messages:
    2,875
    Likes Received:
    2,698
    Location:
    Kendal, Cumbria
    The two valves are to close off the lines to the airbags. If they are left open you are relying entirely on the inflation valve and gauge to retain air. More importantly if they are open you will have no idea whether it's one side or both that lose(s) air.

    So open both valves by turning anti-clockwise when using the airline. Once you have your chosen pressure close both valves fully by turning clockwise until they're firmly closed. Doing this will prevent any leak from the inflation valve and from the gauge. Then see which, if any, side loses air by waiting a few hours then opening the valves one at a time, first one side: read pressure; close valve. Then do the same for the other side. If there's a leak between the valve and the airbag you will see a pressure drop on that side.
     
  11. shunter

    shunter Funster

    Joined:
    Sep 8, 2010
    Messages:
    532
    Likes Received:
    162
    Location:
    Kent the white cliffs end
    i have AL-KO Air Top on mine wich is an additional air suspension it dose not replace the springs and in the hand book is says 3 bar. there are two gauges with tyre valves on
     
    Last edited: Jul 30, 2014
  12. rrusty

    rrusty Funster

    Joined:
    Dec 4, 2009
    Messages:
    85
    Likes Received:
    54
    Location:
    Scotland
    I have got factory fitted air suspension on a Ducato tag axle and have got an air leak in the rear left, in fact they totally deflated twice when in Spain a few weeks ago but that was down to broken linkage - but the air leak may have contributed to it. I have had it looked at by a heavy haulage garage who does air suspension,now I am back home and they found no leaks but as mine are automatic and the air compressor sometimes runs and runs they think it might be a solenoid that's not working properly. They are AL-KO
     
  13. tambo

    tambo Read Only Funster

    Joined:
    Jun 21, 2014
    Messages:
    875
    Likes Received:
    637
    Location:
    Dunfermline fife scotland
    Il give this a go tommorrow , up till now I've had both knows turned fully clockwise at all times even when inflating , air seems to have got through to the bags as they've always inflated but then both gauges lose pressure within a few hours

    But il try your suggestion tommorrow and see if the bags stay inflated
     
  14. tambo

    tambo Read Only Funster

    Joined:
    Jun 21, 2014
    Messages:
    875
    Likes Received:
    637
    Location:
    Dunfermline fife scotland
    Although mine isn't an alko chassis my bags don't replace the springs either only the Bumpstop s it still has leaf springs and gas shocks
     
  15. Ed Excel

    Ed Excel Funster

    Joined:
    Nov 27, 2012
    Messages:
    869
    Likes Received:
    577
    Location:
    Ribble Valley
    Not a permanent fix, but I'd be carrying some tyre sealant, for emergencies, if I had bags
     
  16. tambo

    tambo Read Only Funster

    Joined:
    Jun 21, 2014
    Messages:
    875
    Likes Received:
    637
    Location:
    Dunfermline fife scotland
    A mate had suggested putting that gel you get for motorbikes to prevent punctures in the system but im reluctant as not sure if that would do long term damage , he also suggested nitrogen as apparently that's the latest thing from Kwik fit supposedly guarantee your tyres don't lose pressure like they do with air
     
  17. TheBig1

    TheBig1 Funster Life Member

    Joined:
    Nov 27, 2011
    Messages:
    7,224
    Likes Received:
    9,612
    Location:
    Dorset
    if you inject the puncture gel into the airbags it will probably work, but will cause issues in the airlines and valves
     
    • Like Like x 1
  18. MikeD

    MikeD Funster

    Joined:
    Dec 21, 2011
    Messages:
    1,978
    Likes Received:
    1,759
    Location:
    London

    I would also definitely recommend Dave Newell. He has just fitted air suspension to my Fiat Ducato chassis van and has done a great job.

    (y)(y)
     
  19. TheBig1

    TheBig1 Funster Life Member

    Joined:
    Nov 27, 2011
    Messages:
    7,224
    Likes Received:
    9,612
    Location:
    Dorset
    marcle leisure stock all the parts at sensible prices and can supply compatible airbags and fittings if necessary and you can do the fitting yourself
     
  20. tambo

    tambo Read Only Funster

    Joined:
    Jun 21, 2014
    Messages:
    875
    Likes Received:
    637
    Location:
    Dunfermline fife scotland
    I tried phoning date this morning message on answer machine says closed till 5th August :)
     
    • Like Like x 1
Loading...

Share This Page