Alko air suspension help please

Discussion in 'Tech/Mech General' started by DavidG58, Apr 28, 2013.

  1. DavidG58

    DavidG58 Funster

    Joined:
    Feb 24, 2013
    Messages:
    6,274
    Likes Received:
    12,105
    Location:
    Bolsover, Derbyshire
    Hello all, newbie fool here again. I have a Hymer with Alko chassis, the manual makes no reference to what I think is air suspension. Beside the drivers seat in the exit well are 2 pressure guages, both have Alko on them hence my assumption they relate to the suspension. There appear to be 2 tyre type valves adjacent to the guages, the guage range is 0 - 8, not sure what units, one is bang on zero, the other is 2. Anybody out there got the same or have any ideas what it is, how it works and is mine right?

    I have now decided never to buy anything so technical privately again, regardless of how cheap it might seem, I need too much hand holding!! and selling my old MH privately has been truly tiresome.

    David
     
  2. Peter & Elaine

    Peter & Elaine Funster

    Joined:
    Aug 30, 2012
    Messages:
    3,967
    Likes Received:
    6,462
    Location:
    Roobarb land
    Don't drive it till you get some air in the 0 one you will damage the airbag
    Set both pressures to equal say about 40 psi and check for leaks
    I have mine set at 50 psi
     
    • Like Like x 2
  3. billy

    billy Read Only Funster

    Joined:
    Jan 10, 2009
    Messages:
    658
    Likes Received:
    314
    Location:
    Bolton
    Mine is inflated by using a compressor yours sounds like you have to inflate it yourself with a pump.
     
  4. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    29,443
    Likes Received:
    16,872
    Location:
    YO11 2BD
    the 0 to 8 range will be in BAR...not PSI.

    40psi is 2.75bar

    inflate both to this pressure then see how the van 'rides'

    might need more, might need less.

    I run my rear Goodyear air bags at 60psi but the rear axle weight is around 5 tons.
     
  5. Bailey58

    Bailey58 Funster Life Member

    Joined:
    Jun 23, 2010
    Messages:
    6,347
    Likes Received:
    9,608
    Location:
    Norfolk and Toftir.
    This follows on from a query I made on a thread regarding the Bailey Approach. Does air suspension give a better ride on an Alko chassis or should it not be necessary with the lower floor?
     
  6. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    29,443
    Likes Received:
    16,872
    Location:
    YO11 2BD
    air assist's primary function is to maintain correct ride height....anything else is a bonus (stability etc)


    motorhomes are usually built close to, so constantly runs near, the vehicles max permitted weight limit so a lot more suspension 'give' is to be expected

    the same base vehicle in a working environment will spend more time unloaded than loaded so the suspension doesnt suffer anywhere near as much.
     
  7. DavidG58

    DavidG58 Funster

    Joined:
    Feb 24, 2013
    Messages:
    6,274
    Likes Received:
    12,105
    Location:
    Bolsover, Derbyshire
    Oh, still sounds complex, do I need to inflate with an airline or woiuld a foot pump do? Any ideas why it is down to zero? Should I be worried that I am off to Scotland on Friday?
     
  8. Peter & Elaine

    Peter & Elaine Funster

    Joined:
    Aug 30, 2012
    Messages:
    3,967
    Likes Received:
    6,462
    Location:
    Roobarb land
    A foot pump will do or a 12 volt compressor
    Just blow it up to about 40 psi leave it for a while if it goes down you have a leak
    If it stays up great just keep a eye on it
     
  9. Bailey58

    Bailey58 Funster Life Member

    Joined:
    Jun 23, 2010
    Messages:
    6,347
    Likes Received:
    9,608
    Location:
    Norfolk and Toftir.
    From the AS Air Suspension website:

    The two-gauge control panel, to operate the compressor, is normally fitted within the cab area of your vehicle, although this is of personal preference. Operating the system is simple, with one switch to raise the air spring/bellows and two push-in buttons to lower.

    This is what I've got in my cab, a control panel with one push button to inflate both sides and 2 buttons to lower them individually. The 12v pump is located under the rear seat. If you have tyre type valves it looks like a manual pump up system
    .
     
  10. DavidG58

    DavidG58 Funster

    Joined:
    Feb 24, 2013
    Messages:
    6,274
    Likes Received:
    12,105
    Location:
    Bolsover, Derbyshire
    if it goes down you have a leak
    If it stays up great

    Is a leak mendable or are we into a new system? being of a permanently negative viewpoint, what kind of £'s will it take to mend or replace? I will get a compressor on to it tomorrow, I might just get lucky.

    Thanks to all contributors so far, I am not there yet though so keep on 'helping ' please

    David
     
    • Like Like x 1
  11. smiffy502000

    smiffy502000 Funster

    Joined:
    Aug 5, 2012
    Messages:
    218
    Likes Received:
    118
    Location:
    sutton coldfield
    hi,had a similar set up in my old mh,just pop to the local garage insert 20p in the air line,inflate to your required pressure,you will see the back end lift up. you will see heads turn when you open the door and insert the airline into the footwell !!!:BigGrin::BigGrin:
     
    • Like Like x 1
  12. billy

    billy Read Only Funster

    Joined:
    Jan 10, 2009
    Messages:
    658
    Likes Received:
    314
    Location:
    Bolton
    Put some air in using your foot pump then by morning you will find out if you have a leak or not.

    Mine are set at 3bar if this helps
     
    Last edited: Apr 28, 2013
  13. Peter & Elaine

    Peter & Elaine Funster

    Joined:
    Aug 30, 2012
    Messages:
    3,967
    Likes Received:
    6,462
    Location:
    Roobarb land
    There maybe nothing wrong just low pressure
    possibly a loose connection or a bit of pipe to replace all easy cheap fixes
    At worst you could be looking at a replacement airbag but i don't think thats very likely they are very robust and not likely to fail
    Easy to fit but unsure of cost
    mine were fitted new from scratch in well under 2 hours for £400 by a dealer
    Don't go spending a fortune on a compressor just for that any old thing will do even a bike pump with correct end it's no more difficult than blowing up your vehicle tires
     
  14. francour

    francour Read Only Funster

    Joined:
    Mar 13, 2012
    Messages:
    94
    Likes Received:
    13
    Location:
    Pontefract
    air suspension

    Hi
    hymer do not have Alko chassis
     
  15. DavidG58

    DavidG58 Funster

    Joined:
    Feb 24, 2013
    Messages:
    6,274
    Likes Received:
    12,105
    Location:
    Bolsover, Derbyshire
    OK, been down cellar, found a 12V compressor, plucked up courage and blown up the system, both now set a 3 bar, no obvious hissing sounds and the MH is now amazingly stable to walk around in, I had thought it seemed very soft. Given the relatively high spec of the MH I am surprised it does not have its own pump, will check again oin morning and report back on pressure retained, probably quickly followed by several calls for more help.

    For the curious or confused, I have not used the MH yet, bought in Feb ben put off by weather twice, definitely going this Friday, suspension issues allowing!!

    Many thanks again for help and support, it is good to have you there:drink:

    David
     
    • Like Like x 2
  16. Peter & Elaine

    Peter & Elaine Funster

    Joined:
    Aug 30, 2012
    Messages:
    3,967
    Likes Received:
    6,462
    Location:
    Roobarb land
    Well done that man
     
    • Like Like x 1
  17. DavidG58

    DavidG58 Funster

    Joined:
    Feb 24, 2013
    Messages:
    6,274
    Likes Received:
    12,105
    Location:
    Bolsover, Derbyshire
    OK another boob I guess, all I was going by was the ALKO on the guages, it is a 2008 Hymermobil S if that helps

    David
     
  18. Xabia

    Xabia Funster

    Joined:
    Jan 20, 2011
    Messages:
    679
    Likes Received:
    409
    Location:
    Rural Nottinghamshire
    I am afraid you are wrong there, most Hymer A class motorhomes do indeed have Alko chassis - mine certainly does! :Smile:

    Mike
     
    • Like Like x 2
  19. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    29,443
    Likes Received:
    16,872
    Location:
    YO11 2BD
  20. DavidG58

    DavidG58 Funster

    Joined:
    Feb 24, 2013
    Messages:
    6,274
    Likes Received:
    12,105
    Location:
    Bolsover, Derbyshire
    Mine has 2 guages, which is the only reason I knew there might be a problem, based on various replies I am now looking tomorrow in daylight to confirm if it is definitely an Alko chassis and whether mine has a built in pump, I dont think so, hence the 2 valves. So far still pumped up to 3 bar, but 2 hours parked may not be a tough enough test!!
     
Loading...

Share This Page