Air suspension pressure

Joined
Sep 2, 2016
Posts
205
Likes collected
384
Location
Dorset
Funster No
44,930
MH
Rapido 786f
Exp
Newbie
Just want to say, before I ask yet another question THANK YOU ๐Ÿ‘๐Ÿ‘๐Ÿ‘ to everyone here on the forum. This really is the most helpful forum and every time I've asked a question I've had some much help from you. We really do appreciate you all.
So we've got rear air suspension and it is the only thing on the MH that didn't come with an instruction manual. The bags seem to have two sections to them and there is a little valve that come out of the side of the MH near the back. There's no pressure gauge or anything else.
Any idea as to what pressure they should have in them? The MH is 3850 on the log book.
Am I also correct in assuming we'd need to use a tyre foot pump of the stirrup bicycle pump we have rather than a compressor?
Thank you ๐Ÿ˜
 
It's trial and error really. I would start low and then increase slowly until it feels right. Should reduce the sway when cornering and when being overtaken at speed.
 
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I leave mine a 3 bar most of the time when its loaded up in the garage -I carry a lot of stuff including a motorbike. I was told between 2 and 3. I would just make sure when it is oaded up that the back end looks as though it is at a normal ride height i.e. not slouching in the rear springs as though it is overloaded. 3 bae would be hard work work a bicycle or foot pump - I use a electric pump.
 
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We used to run our previous van at 2.0 Bar.
(Haven't yet had it fitted it to our current van)
You can easily pump it up with a bicycle pump or foot pump, as it doesn't take much air.
As above, it is trial and error. I would start at 1.5 Bar and increase it 0.5 Bar at a time and see what feels best.
 
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I use a bike pump. I had to look up what 3 bar is in psi and it's only 43psi. A bike pump will easily inflate a road bike tyre to double that.

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Our back axle is loaded to about 2070kg according to our last trip to the weighbridge and I run our rear air assist at about 2.5 bar (36.32 psi) for a comfortable and stable ride and I up it to 3 bar (43 psi) if we are on some rough old roads our there are strong crosswinds. We are a 3850kg rated van.
My controls are on the dash, so I can adjust the pressures while on the move.
 
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I normally run ours at 2.5 - 3.o bar and adjust when necessary with the onboard compressor.
It's best to keep at least 1-2 bar to avoid damage to the bags by compression.
 
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Awww what a helpful bunch you are !!! Thank you very very much. My husband has just put it at about 35 psi so we'll see how that goes.
The previous owners hardly used the MH in all the years they had it and they didn't know it had air suspension, we discovered it! But then we've found lots of extras they didn't know they had either, nice bonus ๐Ÿ˜€
 
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