C43 A/C Compressor Replacement, Help?
Thread Starter
Junior Member
Joined: Jun 2009
Posts: 61
Likes: 1
From: Nashville, TN
2008 ML320cdi, 2008 SL600Renntech, 2009 C63
C43 A/C Compressor Replacement, Help?
Does anybody have a guide on replacing the A/C Compressor/Dryer on a C43. My mechanic wants 1700 and I can buy the parts for 300.
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Joined: Jan 2007
Posts: 1,152
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From: Sydney, Australia
190D 2.5 (x2), 190E 2.6, W202 C240,W202 C43 (C55), W210 E55, W212 E250CDI
The actual replacement of the A/C compressor is easy.
Is the old compressor leaking or has in failed internally? If it failed internally then take it somewhere where they will flush the system fully otherwise your new compressor will live a short life.
If it was just leaking then it will be easy to replace.
1) Release all the gas in the system
2) Drive the car up onto ramps/jack car up
3) Remove the drive belt
4) Remove both A/C lines to the compressor (from the top, remove washer bottle for better access)
5) Unbolt the compressor from below (3 or 4 bolts on the side of it)
6) Remove the compressor out the bottom
7) Install new compressor with new seals on the A/C lines.
8) Refit drivebelt
9) Drive to you local A/C service center to replace the drier and charge the system.
Is the old compressor leaking or has in failed internally? If it failed internally then take it somewhere where they will flush the system fully otherwise your new compressor will live a short life.
If it was just leaking then it will be easy to replace.
1) Release all the gas in the system
2) Drive the car up onto ramps/jack car up
3) Remove the drive belt
4) Remove both A/C lines to the compressor (from the top, remove washer bottle for better access)
5) Unbolt the compressor from below (3 or 4 bolts on the side of it)
6) Remove the compressor out the bottom
7) Install new compressor with new seals on the A/C lines.
8) Refit drivebelt
9) Drive to you local A/C service center to replace the drier and charge the system.
Thread Starter
Junior Member
Joined: Jun 2009
Posts: 61
Likes: 1
From: Nashville, TN
2008 ML320cdi, 2008 SL600Renntech, 2009 C63
Thanks
The parts came in and everything went according to your guidance (except it took me an hour to figure out how to release the belt tensioner)
Everything works great and my total bill was $386.41 instead of $1700
Everything works great and my total bill was $386.41 instead of $1700
MBWorld Fanatic!
Joined: Jan 2002
Posts: 1,597
Likes: 0
From: San Francisco, CA
1996 C36 AMG, 1995 Volvo 850 Turbowagon
do u need to replace the a/c collection tank? was told i needed to do it as the compressor is gone, water/vapor may have gotten into the tank...
woops, i guess it's the same question as above
woops, i guess it's the same question as above
Thread Starter
Junior Member
Joined: Jun 2009
Posts: 61
Likes: 1
From: Nashville, TN
2008 ML320cdi, 2008 SL600Renntech, 2009 C63
I only replaced the dryer.
It came with the compressor kit which included the oil. Months later everything is still working perfectly
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