A/C Compressor failing - MBWorld.org Forums

May 26, 2012 | 10:40 PM

thtguy

Thread Starter

Super Member

Joined: Dec 2007

Posts: 846

Likes: 45

From: ATL

2017 GLS 550

A/C Compressor failing

So I had my A/C tested today and was told the compressor is getting weak. the air has been getting warm when idling, or in slow traffic.

I have done A/C compressors on old domestics and Japanese cars, Just wanted to see if there are any gotcha's to doing it yourself.

Shop quoted $1500 said it is a 30 min job. I have an A/C vaccuum pump, and what not. just wanted to see if i could run into issues with the A/C computer or anything. I can get the parts (compressor, evaporator, expansion valve)from autohauz for around $500 total.

Thanks,

Jeff

May 27, 2012 | 12:10 AM

loudandheard

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Joined: Mar 2007

Posts: 1,948

Likes: 3

From: Houston, TX

C32/C55 AMG

So do you think it's the compressor clutch or is their a leak? Hopefully some of the these thread that I found will be useful. You may need to put some compressor oil when you install the compressor again.

http://www.benzworld.org/forums/w126...e-rebuild.html

http://www.benzworld.org/forums/w140...ch-coil-r.html

https://mbworld.org/forums/c-class-w...placement.html

http://www.benzworld.org/forums/w210-e-class/1346822-photo-diy-c-condensor-replacement.html

I searched to see what the model our compressor is, take in mind I was searching for the C32, but I'm hoping the C55 has the same compressor. I noticed that a lot of mercedes models use the same one. Well, the model I came up with is the denso 7SEU16C.

I found this exploded diagram of the compressor, use the search function and put in 7SEU16C and it will come up.

http://www.autoacforum.com/explosions/compressor.pdf

I found the seal kit for denso 7SEU16C - $18
http://www.partsgeek.com/catalog/200...asket_kit.html

It's doable if you have the time. Doing a bit more work and it looks like the C55 may have a different compressor. If you can find the compressor model, then you could probably rebuild it. Hopefully my research will be helpful for a C32.

Did some more searching and it looks like the model for the c55 is denso 471-1579
and for the slk32 is denso 471-1478

http://www.densoaftermarket.com/cata....php?part=comp

Basic run down of the rebuild process. Seems fairly straightforward. From my experience, the design of these things don't change much
http://forums.acuralegend.org/rebuil...o-c-t122.html?

Last edited by loudandheard; May 27, 2012 at 12:31 AM.

May 27, 2012 | 11:52 AM