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79 450 SL, 2014 GL63 AMG, 2016 E400 Cabriolet
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Discussion Starter #1
After confirming for myself that my AC compressor was leaking, I have decided it must be replaced. Is this something I can do myself, or should I buy one and take it to a shop. Anyone know where to get a remanufactured one? My part number is A0002342411. I have seen similar ones on Ebay, but with a different part number A0002306811. A local shop here has quoted me $800 to do it all.

I have a 98 ML 320 with 165,000 miles.
 

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2014 RX 350 F Sport, 2007 Scion tC, 2000 ML 430 Money Pit Finally Gone! Oh Happy Day!
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wvcaudill said:
After confirming for myself that my AC compressor was leaking, I have decided it must be replaced. Is this something I can do myself, or should I buy one and take it to a shop. Anyone know where to get a remanufactured one? My part number is A0002342411. I have seen similar ones on Ebay, but with a different part number A0002306811. A local shop here has quoted me $800 to do it all.

I have a 98 ML 320 with 165,000 miles.
Parts here Used Auto Parts Live - 1998 Mercedes M Series A/C Compressor

I would let a pro do it myself.................................... my 2 cents.
 

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ML 500 '02
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541 Posts
There are a lot of resources on the net re: AC.
Have a look at the following link:

Pelican Technical Article: 911 Nippondenso A/C Compressor Rebuild

As the article suggests, replacing the seals may also be an option.

Here is another resource:

Arizona Mobile Air Inc. (ACKits.com)

It appears that you have a Nippondenso 7SBU16C

A diagram can be downloaded here:

http://www.ackits.com/diagrams/Nippondenso1.pdf

My compressor on my W126 is similar and I just plan to replace the seals. Beware of poorly remanufactered units.

Good luck.

D
 

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1999 ML 430
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675 Posts
wvcaudill said:
After confirming for myself that my AC compressor was leaking, I have decided it must be replaced. Is this something I can do myself, or should I buy one and take it to a shop. Anyone know where to get a remanufactured one? My part number is A0002342411. I have seen similar ones on Ebay, but with a different part number A0002306811. A local shop here has quoted me $800 to do it all.

I have a 98 ML 320 with 165,000 miles.
How did you figure out that the compressor is leaking? The reason I ask is I had a empty compressor and all I had to replace where the valves on the inlets, somehow they got loose or soemthing like that...saved me a bunch of money and is still running strong.
 

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1999 E55, 2001 E320, 1990 560 SEC, 2004 ML350, 2001 ML55, 1995 S500, 1998 SL500, 2010 E550 Sport zoo
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there are "new" compressors for under $400

I would have a shop do a a/c test and check to see if the leak is the compresso, or a bad hose/connection to the compressor - hose failure at the compressor connect was one not-uncommon problem in early ML's, espceially '98. A shop does a leak test with dye..

Just so you know, there are "new" non-Denso made butt crop-in replacement compressors on the market for under $400 now in the US market - check eBay.

I alos reommend 1aircondition.com - a offshoot from carsteering.com - remans at $345, a non-Denso new drop-inb $395, and a new Denso $515 - all with no core return or core charge, out the door. I would call them at their customer service line, and sometimes these guys will include prepaid UPS

I would also recommend a new accumulator/drier and new expansion valve - can also be eBay or other internet sources at about $45 or so each, the non-OE made equivalents are fine...

I haven't handled one of these non-Denso replacement's, but the prices are sharp.. don't be fooled by cheapo rebuild shops...

Good luck !
 

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79 450 SL, 2014 GL63 AMG, 2016 E400 Cabriolet
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Discussion Starter #6
Thanks for all the help. I had two shops check the AC system. The first one only does AC work and they identified the compressor. The second does general auto work and they said it was the evaporator. I bought a test kit myself with the dye, freon, UV glasses and light-pen. I saw fresh oil dripping from the mounting bolt at the bottom of the compressor. I could not see a leak from any of the lines or connections. I think the evaporator leak was from an old leak that was repaired under warranty years ago - would the residual dye still be detectable? So, I believe I will go to the first shop and have them install a reman compressor. They say it is the OEM one. I will have to check.
 
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