How can I to check whether the Airmatic shock works ? - Mercedes-Benz Forum

 
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post #1 of 5 (permalink) Old 09-16-2016, 01:35 AM Thread Starter
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How can I to check whether the Airmatic shock works ?

I have a set of 4 airmatic-shock absorbers, 2 fronts and 2 rears, that were removed from my relative's car, '00 S320 W220, because some of them were dead. I'd like them to be used in my control engineering project.

So How can I to check which of them are still working ?

And if the air section of the shock is dead i.e. air leaking. Can I use that shock by advantaging only on its mechanical or electrical controlled section ?

In conclusion, I'd like the shocks to move. How can I to check and let them move ?

Thank you
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post #2 of 5 (permalink) Old 09-16-2016, 07:54 AM
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You can check it visually for cracks. The outer shield can be removed and then you see the rubber.
There is no mechanical section on them. The electro-valve is only opening and closing.
So if you hook up air hose to the fitting an power to the valve, you can inflate it on the table.

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post #3 of 5 (permalink) Old 09-16-2016, 09:09 AM Thread Starter
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Hi Kajtek1,

I'm new to the automotive component and also the mechanical system as I'm studying electrical. So I'd like to ask for more information from your answers.

1. Is applying the air to the shock easily done by connecting the air pump (Does the vertical bike hand pump possible ?) to the hole that located on the top of the strut ? Do I have to concern about the pressure or any cautions during this process ?
2. To power the electro-valve, Do the connecting strut plug directly to + and - terminals of 12V battery will be possible and safe ? Said the strut will be stretched or compressed if the +/- or -/+ were connected to the battery ?
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post #4 of 5 (permalink) Old 09-16-2016, 09:12 AM
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Per my observation the system work on up to 160 psi, so if you want to use it at full power you need more than standard air pump.
I never jumped the elctrovalve, but have seen DIY somewhere.

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post #5 of 5 (permalink) Old 09-16-2016, 09:46 AM
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Oh, just to make it clear, the valve on the bag is open/close only.
The raising or lowering is by charging, or dumping the pressure in main line

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