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2005 CLK320, 2009 E350
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Discussion Starter #1
Requesting any information for a AC compressor install.

Looks to be a pain only because it's on the bottom side of the engine (driver's side) and the bolts look like there is no space to get anything in there...

I've used a stethoscope to determine almost 99% that the whining noise that the car is making is coming from that. AC still blows cold but honestly I think the pulley is shot. When I did not have the belt on the AC compressor the car made NO noise.

I believe the drier cartridge is on the left of the rad under the black plastic cap? Want to just make sure.

Thanks much,
-Nigel
 

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Premium Member
2004 CLK 240 Coupe
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11,367 Posts
OK - here is what you need..:)

Ref a/c drier location. There are 2 designs and I guess that you have the earlier arrangement. Both are included below.

Note the plugs for sealing the lines during the job to keep out moisture. I guess that you can DIY here.
 

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Discussion Starter #3
Thank you!

It does look like I have the dryer on the driver side.

How does one remove the top portion though? It looks like one needs a special tool... And it says don't open on the top of it..lol

thanks,
-Nigel
 

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Premium Member
2004 CLK 240 Coupe
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How does one remove the top portion though? It looks like one needs a special tool... And it says don't open on the top of it..lol


Don't open it, if you are not replacing the cartridge.

Ref the tool. See step 4. That refers to the special socket shown at the bottom of the page, and the torque required when refitting the plug.

Can you find something in your toolbox that fits this size?
 

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2005 CLK320, 2009 E350
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Discussion Starter #5
Welp I got the special tool, found it on ebay for $20 so I got that down covered now.

JUST pulled out the AC compressor.. talk about a PITA...lol


Could I ask ONE more favor.. how much r134a is required to refill the system? I read something just shy of 3 full cans of normal r134a? Is this correct? And roughly 7-8oz of PAG46 oil.

Thanks again!

-Nigel
 

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Premium Member
2004 CLK 240 Coupe
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Hopefully, someone who has done this can be specific here. My WIS is short of information on quantities for the a/c system. However, for a complete refill, I would expect:

1. At least two 12oz (340g) cans of R134a refrigerant.
2. The lubricant is more tricky as you will have some already distributed around the system.

My WIS says "Pour the quantity of oil drained from the removed refrigerant compressor, plus an additional 20cc into the new refrigerant compresssor". Can you remember how much oil was in the old compressor? You may have to make an educated guess here...:)

There are loads of a/c re-charging procedures on the net . Here is one of them. How to Recharge Your Car's Air Conditioner
 

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2005 CLK320, 2009 E350
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Discussion Starter #7
I tried to drain out what was in the old compressor and only about a spoon full came out IF that...

I just drained the new compressor and I pulled out 100ml from it via from the factory.

hmmmmm

Still looking on this...lol

-Nigel
 

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Discussion Starter #8
Hopefully this helps someone in the future.

Attached:

-Nigel
 

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03 CLK55 Coupe
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162 Posts
The A/C compressor in my 03 CLK55 recently died a horrible death. What tips or procedures can you give me to make this repair smoother? Any tips and/or information you provide me is much appreciated. The compressor, dryer insert, Schrader valve inserts, O-ring kit and expansion valve have been ordered.

Thanks in advance.
 

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2005 CLK320, 2009 E350
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Discussion Starter #10
It's a tight fit...lol

Seriously you will spend more time removing little things around the compressor then pulling the old compressor and removing it from the bottom than anything else. It's definitely not a hard install by any means. Just everything is tight. You will need to remove the front bumper, and lower trim. I removed the driver side fender well as that helps greatly. Other than that, how did it die? Is there metal in the system? If so I would change the condenser as well, since you are replacing everything else. I believe the OEM condenser I got from Amazon cost $80, cheap in terms of everything considering.

See my thread here with pictures:

http://www.benzworld.org/forums/c209-a209-clk-class/2147378-2005-clk320-making-whining-noise-possibly-3.html

-Nigel
 

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03 CLK55 Coupe
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It was a fast progression from working fine to dead. Initially it started by blowing warm air when the A/C was turned on then after 2-3 minutes the A/C would blow cold and work normally. It progressed to the point on warm days the A/C would only blow warm air. One day the compressor started making screeching noises (like dry metal on metal) which progressed to making really loud knocking noise like a spun rod or crank bearing. Initially, I thought the engine had spun a main bearing even though the motor was just idling. The knocking sounded like someone was smacking the case with a 5lb. ball-peen hammer at a regular interval. The knocking did not increase with engine RPM.

Removed the accessory belt, all pulleys are tight and rotate smooth and free except for the A/C compressor pulley. The A/C pulley has about 3-5mm of movement and makes crunching noise when it is spun. It seems like a ball bearing is out of the bearing cage causing movement. Can not verify if the compressor shaft will rotate, however the system is still holding pressure.

Installed a A/C compressor bypass drive belt all other systems are functioning normally.
The packaging of the engine accessories is very compact with precious little space. It would be easier if the whole engine was removed to replace the A/C compressor since it is on the bottom. It looks like the A/C compressor will come out through the driver side fender well.

Although the parts have been purchased still not convinced I will make the repairs. The removal of the A/C compressor still has me undecided. I will have to take to service tech to recover the refrigerant before the system is disassembled. Any words of encouragement, photos, tips, unique procedures are greatly appreciated. I have tackled most other automotive systems the A/C system is unchartered territory for me.
 

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Discussion Starter #12
Not sure what other things you've done on cars but I can assure you that it isn't a hard job. Just time consuming because of crampness, you will spend more time undoing one bolt just so you can move a hose to be able to get an inch or two to be able to remove X part or Y part.. Definitely agree raising the engine would make the job easier, but it can be done. Mind you I have a mid lift in my garage so I might be thinking it was easier than what it COULD have been if the car was on jack stands. If the car was ONLY on jack stands then I might be singing a different tune and have taken it to someone.. I'm cheap though and most "manual" labor I am ok with doing as long as I don't have other pressing things on the table.

As far as the r134a gas in the system, though it's illegal to just "vent" it in the air, that is what I did in my garage. I like the environment but at the same time paying a shop to suck it out at $150 was silly to me. I have the vacuum pump and ac gauges so pulling a vacuum and then waiting to see if it held, then filling the system was not hard at all. Took about 40 minutes to do not counting the hour I had it at the vacuum and left to make sure it held.

If you do not have these tools then it might be worth while to take it to a shop. I do know that I was quoted almost 2k to change the AC compressor/condenser and orings along with misc things such as filling/vacuum the system. I think I paid $200 for the new ac compressor, $80 for the condenser and $30, for the pag oil and r134a. So I saved about $1700 doing it myself and was just out a weekend doing it.

-Nigel
 

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03 CLK55 Coupe
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162 Posts
I am also frugal (cheap!) most mechanical tasks are not beyond my skill set. I do not have all the special tools or a lift to facilitate my repairs so I have to do strategic planning to accomplish bigger and more complicated jobs. As you already know all the new parts required were less than $500.00 so the majority of the job is for labor. Labor I can provide, I just need to know about rough spots and pitfalls I am not aware of. I really just want to ensure the repair is done correctly the first time.

Thank you for the information.
 

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2001 ML320, 2005 CLK320, 2010 ML350
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59 Posts
Hi Nigel, I am replacing my ac compressor for the CLK320 2005. What do I need to remove before I can get the compressor out? Thank you so much.
 

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MY05 CLK55 AMG , MY05 CLK320,Former,C180 Kompressor,Jensen Healey,Ford Capri V6,Alfa GTV.
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To remove the compressor.
1. Discharge refrigerant..
2 . Disconnect negative battery cable.
3.Remove drive belt.
4. Remove air cleaner intake tube from above.
5. Unplug clutch wiring harness. Disconnect refrigerant lines.
6. Unbolt compressor from the bracket and remove it.
 

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Registered
2001 ML320, 2005 CLK320, 2010 ML350
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59 Posts
It's a tight fit...lol

Seriously you will spend more time removing little things around the compressor then pulling the old compressor and removing it from the bottom than anything else. It's definitely not a hard install by any means. Just everything is tight. You will need to remove the front bumper, and lower trim. I removed the driver side fender well as that helps greatly. Other than that, how did it die? Is there metal in the system? If so I would change the condenser as well, since you are replacing everything else. I believe the OEM condenser I got from Amazon cost $80, cheap in terms of everything considering.

See my thread here with pictures:

http://www.benzworld.org/forums/c209-a209-clk-class/2147378-2005-clk320-making-whining-noise-possibly-3.html

-Nigel
Nigel, I finally replaced the condenser, but I created one more problem. I thought I put the upper tie bar back nicely, but somehow when I closed the hood, I couldn't open it again. I pulled the red latch inside car and it sounded like it opened it, but when I lift the latch under the hood, it didn't open. Is there a way to open this hood manually? Thank you so much.
 

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CURRENT: 2011 SL550, 2011 C300 FORMER: ML350, CLK550 Cabriolet, C240, ML320, 300TD
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You'll have lift the car, remove the front road wheels and the fender shrouds to access the hood locks and manually disengage them.
 

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MY05 CLK55 AMG , MY05 CLK320,Former,C180 Kompressor,Jensen Healey,Ford Capri V6,Alfa GTV.
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No guarantee but on various other cars I have had success by having one person push down on the hood,a quick sudden push,at the same time as the release lever is pulled by a second person.
Worth a try perhaps.
 

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2001 ML320, 2005 CLK320, 2010 ML350
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Hi everyone, when I turn on the AC in my 2005 clk320, it sounds like a jet engine. It goes back to normal when I turn the AC off. Is this normal? Thank you.
 
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