GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

PSI produced by the Airmatic compressor?

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Old Feb 3, 2024 | 12:24 PM
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GLS450
PSI produced by the Airmatic compressor?

What pressure should a good condition Airmatic compressor produce?
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Old Feb 3, 2024 | 01:05 PM
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2007 GL450
Monitor the pressure sensor while the reservoir is filling and you'll get your answer.
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Old Feb 3, 2024 | 02:09 PM
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GLS450
How to monitor pressure sensor?

Where could I read PSI?
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Old Feb 3, 2024 | 05:02 PM
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2010 ML550 VIN WDC1641722A564750, 2010 B180
Originally Posted by 1xsculler
Where could I read PSI?
Your scan tool should have it. Which one do you have?
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Old Feb 3, 2024 | 06:07 PM
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GLS450
PSI

icarsoft MB ll is my scanner.
I have three pumps I want to check the condition/output of, i.e. two P-3277s, one brand new and one with an few hours on it and one Chinese Arnott, the number of which can’t remember which is about four years old.
I have set up a pressure gauge I can screw into the outlet.
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Old Feb 3, 2024 | 09:32 PM
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From: Melbourne, Australia
2010 ML550 VIN WDC1641722A564750, 2010 B180
The link below provides AMK website which has a downloadable document that specifies pressures and volume. MBWorld wouldn't let me add it as a document here for some reason. Scroll down that page a bit and you'll see "download"

https://amk-group.com/en/products/ai...nger-cars/lfk/
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Old Feb 3, 2024 | 10:22 PM
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NGL450 w/EORP, S550
16 bar pressure in the central reservoir within 30 seconds.
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Old Feb 4, 2024 | 08:44 AM
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Originally Posted by 1xsculler
Where could I read PSI?
In the Airmatic section of your MBII scanner.

If you are confused because the reading is in bar, one bar equals about 15 psi.

I would not plug the output with a gauge to measure pressure. The pump will very quickly rise to its maximum and then do something, I don't know what, bleed off the excess via a relief valve? Simply pound away? Maybe do it with your Chinesium compressor, but I would not risk the valuable AMK compressors. This could well be destructive testing.
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