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  #1  
Old 10-14-2002, 11:18 PM
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a/c compressor belt change- help needed

(this was a post about the PS pump, but after inspection, its the A/C compressor ! !)

well, while going to change my oil tonight, i get under the car and see the a/c belt is shredded ! !

how hard is it and how long does it take to replace this belt ? any special tools required ? btw, its an 83' 300 CD

thanks in advance !!!

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  #2  
Old 10-15-2002, 12:45 AM
123c
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Need to take off the ps belt to get to the a/c belt. As for taking off the a/c belt, there should be a tenioner located somewhere on the engine, need to locate a bolt on this to get the belt off. At least that's how it is on my 1979 300CD, you have a different compressor so it might be different. This should take no longer than 10-15 minutes.
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  #3  
Old 06-27-2007, 07:09 PM
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I need to change mine

85 CD, I noticed my compressor belt had a parallel chunk about two inches long and just a 1/4 wide, missing leaving about a half a belt in thickness for that stretch. The belt looks new so I am a little worried it is rubbing??? It only looks like it is in one section of the belt.

My A/C worked last Sept/OCt when I bought the car, but now it does not blow cold when the outside temp is about like 70 or so....

I ordered the part... has anyone done this lately. I am out of town now, so don't have access to my Haynes manual, but after reading some posts, it looks like I have to loosen the tensioner pulley to reduce tension on the belt, then take off the PS belt, to get to the compressor belt. Any tips?
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  #4  
Old 06-27-2007, 07:13 PM
Abandon the Roads!
 
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If it has the R4 like my 300d, you just take tension off the belt and then pull it out.
Looking from the front of the car, the tensioner is on the top right of both the compressor and the PS pump. They pivot on the top left bolt (looking from the front again).
Basically loosen the bolts and then loosen the nut on the tensioner and then with some grunting and pulling, the belts come off.
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  #5  
Old 06-27-2007, 09:47 PM
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http://207.210.95.34/~boostd/Maintenance/Belts/

Rookie question - alt belts...

Read the whole post, I cover the compressor further down the post.
Make sure you completely loosen the adjusting bolt to move the compressor over so you can remove the belt. I use a crow bar to move it.

Consider replacing all the belts while you are there.

Dave
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  #6  
Old 06-27-2007, 10:49 PM
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wow

wow,

thanks. I like your response with the pictorial. The other belts look less than a year old, so I am going to just change the compressor belt for now. I looks like I have to take off the PS belt first, than replace the compressor belt, and put the PS belt back on.

Quote:
Originally Posted by dmorrison View Post
http://207.210.95.34/~boostd/Maintenance/Belts/

Rookie question - alt belts...

Read the whole post, I cover the compressor further down the post.
Make sure you completely loosen the adjusting bolt to move the compressor over so you can remove the belt. I use a crow bar to move it.

Consider replacing all the belts while you are there.

Dave
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  #7  
Old 06-27-2007, 11:04 PM
Craig
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Quote:
Originally Posted by spugeddy View Post
thanks. I like your response with the pictorial. The other belts look less than a year old, so I am going to just change the compressor belt for now. I looks like I have to take off the PS belt first, than replace the compressor belt, and put the PS belt back on.
That's correct, it's not too bad a job but some of the bolts are a bit of a PITA to reach. Be careful not to break any vacuum lines on the left side of the engine (don't ask).
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  #8  
Old 06-28-2007, 08:39 AM
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and since the alternator belts have to have both the PS belts AND the A/C belts off to change, be SURE they are in tip top shape before you "just" change the a/c belt. if they are even a slight bit polished, they will slip resulting in your car not charging. be sure, get a fresh matched pair of alt belts and change them.
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  #9  
Old 06-28-2007, 06:39 PM
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thanks

thanks, I will triple checkm but they all look new including the compressor belt.

It just has that notch cut out that worries me. Any ideas what happened there....did my compressor seize and therefore my A/C stopped working?


Quote:
Originally Posted by vstech View Post
and since the alternator belts have to have both the PS belts AND the A/C belts off to change, be SURE they are in tip top shape before you "just" change the a/c belt. if they are even a slight bit polished, they will slip resulting in your car not charging. be sure, get a fresh matched pair of alt belts and change them.

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85 300CD Turbo "Das Polluter" 230K sold for $3,000

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