S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

Air matic won't air back up

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Old 12-29-2019, 04:02 PM
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S430 2000, 1996 Chev. Pick-up, 2005 PeterCat
Air matic won't air back up

OK followed instructions as best I could, maybe I missed a reset of some kind.
Had a small leak on top of strut, leaked down overnight, every night. Sprayed with water, epoxy small crack.
elevated car, tires off the ground, removed air line, applied tape so no contamination could take place.
removed epoxy, carefully, removed Brass fitting, cleaned the cupped section of strut, all down around the C-clip.
Did a good job on cleaning, no contamination in top of strut.
replaced Brass fitting, applied epoxy, waited a day and a half.
replaced air line, lowered tires to TOUCH the ground, started car.
Waited 15 minutes lower car about half way from uninflated to touch ground.
Still can not tell if air is filling bag.
Another 15 minutes. lower car goes all the way to uninflated, does not pump.

Do I need to check relay or what, please advise.
Help

Thanks
Old 12-29-2019, 05:00 PM
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S430 2000, 1996 Chev. Pick-up, 2005 PeterCat
Removed air line on top, no air up there.
Rear have held air thru the whole time,

Why would pump stop worling?
Old 12-29-2019, 05:20 PM
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'00 S320 W220, '98 A160 W168/ sold in 2005 '86 260 E W124 '90 260E W124
Tough question, if the leak was there for a long time, the exzessiv load to the compressor might have killed it already. You can check the function of the compressor, by pulling the relay and put a wire jumper across contact 30 and 87, and compressor should start immediately. If not you need a replacement, but only WABCO, any other Chinese brand is not worth the trial.
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Old 12-29-2019, 07:49 PM
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S430 2000, 1996 Chev. Pick-up, 2005 PeterCat
Not sure where contacts are. 30 to 87.
Thanks Bam.
Old 12-29-2019, 10:27 PM
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2003 S500 2007 GL450
If you have fuse/relay charts, locate the Airmatic Relay. Pull it, and look over the relay for the electrical diagram. Carefully determine which is the"30" connection (battery power), and which is the "87" connection (user circuit) on the relay. Then orient the relay to match the installed position, and determine which of the connections in the socket are 30 and 87. Turn the ignition switch (key) to the ON or RUN position, and carefully connect a wire (at least 18 gage) between the two connections (30 and 87) in the socket. The compressor should start running. If so, leave the jumper wire connected to the socket connections until the car is at or near normal ride height. Reinstall the relay, and see if the system now works normally - if not, the relay is highly suspect

If the compressor does not run on the jumper, double check your procedure. If you are absolutely certain that you have done the procedure correctly, and that you have actually provided battery power to Terminal 87 in the Airmatic relay socket, the compressor is now suspect.
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Old 12-30-2019, 08:06 AM
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S430 2000, 1996 Chev. Pick-up, 2005 PeterCat
Sweet, I am learning about things I had not anticipated.
Old 12-30-2019, 09:38 AM
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S430 2000, 1996 Chev. Pick-up, 2005 PeterCat
Just touched the 2 contacts with wire, key in off position, pump started.
Startled me a bit, going to get relay and will replace this afternoon.
Will report later.

Thanks guys
Old 12-30-2019, 06:56 PM
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S430 2000, 1996 Chev. Pick-up, 2005 PeterCat
Replaced relay, All good, came right back up we will see.

I am happy.

Thanks for the help.
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