Air suspension pressure.. (1 Viewer)

May 31, 2015
11,841
45,253
Cornwall
Funster No
36,638
MH
Ducato PVC
Exp
Getting Better
I have air suspension on the back of a fiat ducato pvc what should the pressure be roughly please

C902D039-C622-4DDB-A674-6161F78227CE.jpeg
 
OP
OP
Just smiffy
May 31, 2015
11,841
45,253
Cornwall
Funster No
36,638
MH
Ducato PVC
Exp
Getting Better
I don’t know why there are two of these threads…. This is the main one..

 

Mou and Iryna

Free Member
Jan 28, 2021
154
53
Javea - Spain
Funster No
78,986
MH
Burstner Ixeo 726+
Exp
I am learning fast 😊
Run ours between 2.5.and 3 bar do not run at Full or empty!
I read somewhere that pressure should be at 5 lbs at all times which I thought was very high 😳. I usually run mine around 3. But I read that pressure can be increased if fully loaded. If so, to what level? Some sound advice will be appreciated. Thank you. 👍

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Feb 16, 2020
2,373
3,254
KT15.
Funster No
68,772
MH
Sunlight. T66. 2019.
Exp
Absolute beginners.
I read somewhere that pressure should be at 5 lbs at all times which I thought was very high 😳. I usually run mine around 3. But I read that pressure can be increased if fully loaded. If so, to what level? Some sound advice will be appreciated. Thank you. 👍
5 lbs? Typo? do you mean 5 bar?
5bar , [ 71 psi, approx] yes that's very high, somewhere between 2-4 bar normally finds the sweet spot, experiment with your van, to low= wallowing, to high= goodbye fillings.
Mike.
 
Dec 13, 2019
2,723
2,189
Northumberland
Funster No
67,346
MH
Hymer A Class
Exp
Since 2019
We run ours between 2-Bar and 3-Bar mainly depending on how much water we are carrying in addition to our normal payload. We usually only go up as high a 3-bar when it is particularly windy and we are on good roads as the ride is a bit harsh. Our normal running weight is 3800kg, plus water.
Safe and happy travels.
 
Dec 6, 2011
11,730
25,804
South Wales
Funster No
19,136
MH
Coach built Adria
Exp
Since 2007
i run ours at just over 2 bar ( 30 psi) a word of caution:- do not jack up the body with more than 5 psi in the bags it can cause the bags damage as the axle is pushed away from the body and stretches the bags.
it is ok to jack under the axle with any pressure as that is the same as the wheels being in contact with the road.

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Feb 16, 2020
2,373
3,254
KT15.
Funster No
68,772
MH
Sunlight. T66. 2019.
Exp
Absolute beginners.
i run ours at just over 2 bar ( 30 psi) a word of caution:- do not jack up the body with more than 5 psi in the bags it can cause the bags damage as the axle is pushed away from the body and stretches the bags.
it is ok to jack under the axle with any pressure as that is the same as the wheels being in contact with the road.
Thank you for answering my unasked question, I'd been musing over that scenario.
Mike.
 

Mou and Iryna

Free Member
Jan 28, 2021
154
53
Javea - Spain
Funster No
78,986
MH
Burstner Ixeo 726+
Exp
I am learning fast 😊
5 lbs? Typo? do you mean 5 bar?
5bar , [ 71 psi, approx] yes that's very high, somewhere between 2-4 bar normally finds the sweet spot, experiment with your van, to low= wallowing, to high= goodbye fillings.
Mike.
Thank you Mike. Yes I meant 5 bar. I have always used it between 2.5 and 3 bar. When I am fully loaded with ebikes, I go up to 4 but that is MAX.
2 days ago, I had an issue where the warning light came ON. It was at 3.5 Bar.
The air bags seem fine and not losing any air. The compressor seems to be equally working fine.
I unplugged the battery and replugged it again., thought of resetting the system. The light came OFF and stayed OFF.
I reduced the air in the bags to 2 bar, which is my lowest threshold, the light came ON. Normal. So I put more air into the bags to 3 bar, and the light came OFF and stayed OFF.
So thought..BINGO, the problem was resolved. But 1 day later the light came back ON again. Now I am lost.
I did some digging and found out that it could be either air bags leaking, or faulty compressor or faulty sensor. Since the 1st 2 seem ok, it can only be the sensor. The question is, where is the sensor? I do not have any manual. Took some pictures of the bags and compressor. These are attached. It is a GOLDSCHMITT system. Can you help? Any recommendations? Many thanks. Mourad

Air Suspension Bag.jpg Compressor 1.jpg Compressor 2.jpg
 
Feb 16, 2020
2,373
3,254
KT15.
Funster No
68,772
MH
Sunlight. T66. 2019.
Exp
Absolute beginners.
Hi, my system is much simpler with no on-board compressor. However, yes it sounds like the sensor. I have a sensor on each air bag, and have noted that when one unloads at roundabouts, or odd road cambers, I get an audible warning, but it stops as soon as the plot levels out. Hopefully others will be of more assistance.
Mike.
 
Dec 6, 2011
11,730
25,804
South Wales
Funster No
19,136
MH
Coach built Adria
Exp
Since 2007
Hi, my system is much simpler with no on-board compressor. However, yes it sounds like the sensor. I have a sensor on each air bag, and have noted that when one unloads at roundabouts, or odd road cambers, I get an audible warning, but it stops as soon as the plot levels out. Hopefully others will be of more assistance.
Mike.
I have no built in compressor. Are the air bags connected to a T pipe so the pressure is measured at the same place and when inflating / deflating both bags are adjusted at the same time?

if so i would change that and have independant air lines to each bag.

the weight transfer on roundabouts is forcing air from one side to the other so effectively you are loosing support from the side you need it!!
 
Dec 6, 2011
11,730
25,804
South Wales
Funster No
19,136
MH
Coach built Adria
Exp
Since 2007
PS: or if they are independent then its likely you need to up the pressures.

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Feb 16, 2020
2,373
3,254
KT15.
Funster No
68,772
MH
Sunlight. T66. 2019.
Exp
Absolute beginners.
PS: or if they are independent then its likely you need to up the pressures.
Hi, yes separate line for each bag.I used a 6 wheel tyre pal type system with 2 of the 6 sensors monitoring the air bags.
I think the load comes off the side not being leant on, you can certainly feel the van has less wallowing in corners, and is all-round a nicer ride.
Mike.
 

Mou and Iryna

Free Member
Jan 28, 2021
154
53
Javea - Spain
Funster No
78,986
MH
Burstner Ixeo 726+
Exp
I am learning fast 😊
Hi, my system is much simpler with no on-board compressor. However, yes it sounds like the sensor. I have a sensor on each air bag, and have noted that when one unloads at roundabouts, or odd road cambers, I get an audible warning, but it stops as soon as the plot levels out. Hopefully others will be of more assistance.
Mike.
Thank you Mike. Do you happen to know where the sensor is located? Can it be changed? 👍
 

Dandm

LIFE MEMBER
Jan 12, 2020
120
246
Rochester, Kent
Funster No
67,965
MH
Elnagh Baron 46
Exp
Since 2019
Hi, yes separate line for each bag.I used a 6 wheel tyre pal type system with 2 of the 6 sensors monitoring the air bags.
I think the load comes off the side not being leant on, you can certainly feel the van has less wallowing in corners, and is all-round a nicer ride.
Mike.
Good idea using tyrepal to monitor the pressure (y)
 
Feb 16, 2020
2,373
3,254
KT15.
Funster No
68,772
MH
Sunlight. T66. 2019.
Exp
Absolute beginners.
Thank you Mike. Do you happen to know where the sensor is located? Can it be changed? 👍
Hi, no unfortunately. Perhaps a call to Goldschmitt in the first instance may be helpful, but a sticky sensor sounds like the culprit.
Is there a light, or any other indication when the compressor is running? To know that might be useful, it could/would rule out other components being faulty.
Mike.
 

Mou and Iryna

Free Member
Jan 28, 2021
154
53
Javea - Spain
Funster No
78,986
MH
Burstner Ixeo 726+
Exp
I am learning fast 😊
Hi, no unfortunately. Perhaps a call to Goldschmitt in the first instance may be helpful, but a sticky sensor sounds like the culprit.
Is there a light, or any other indication when the compressor is running? To know that might be useful, it could/would rule out other components being faulty.
Mike.
Hi Mike. The call to Goldschmitt was extremely helpful. I spoke to a technician in the Workshop who knew exactly what the problem was. He clearly identified the problem, being a faulty manometer. I can drive the van but these 2 need to be changed as soon as I can. I ordered 2 "manometers" with the Parts Department. I will call them tomorrow to find out when it will be delivered. The technician clearly advised that the pressure should be normally between 2.5 and 3 bars. But when fully loaded, I can go up to 5 bars. So hopefully the problem is sorted now. Thanks for your help. Happy camping :) Kind regards. Mourad

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