A/C Compressor Replacement

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  #1  
Old 09-20-08, 02:46 PM
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A/C Compressor Replacement

I just replaced my A/C compressor and I'm confused as to whether or not I need to put lube back into the compressor or will it balance out when I recharge with the synthetic re-chill kit I bought. Please Help?

2000 Olds Alero R134A system.

Thanks in advance,
ebird99
 
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  #2  
Old 09-20-08, 06:37 PM
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you will need to pull a vac on the system before you do any thing else for at least 1 hour. then while the vac is being pulled take your old compressor and measure the old oil that you pour out of it. did you change the accumulator drier at the same time? did you also change out the orifice tube? why did you change out the compressor? some of this info is needed to say how much if any oil you will need to add.

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  #3  
Old 09-21-08, 05:39 AM
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The synthetic re-chill kit I bought contains 2 oz of oil. My question is. Do I have to still add oil to the compressor or is the 2 oz all that is needed. Nothing else was replaced. The clutch failed so while I was at it, I got the new compressor.
 
  #4  
Old 09-21-08, 01:17 PM
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you still need to pull the system vac and measure the oil from the old compressor, since your vehicle is older than 5 years i would replace both the accumaltor drier and the orifice tube as cheap insurance. then just add the amount of oil that was removed from the old compressor.

are you going to cowboy up or just lay there and bleed?
 
  #5  
Old 09-21-08, 09:11 PM
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as speedwrench said, it is IMPERATIVE that you pull a vaccuum on the system before you try to charge it. I, personally, would take his advice on the accumulator/dryer and orifice tube (if equipped) also...especially if the system has been "open" for very long. That accumulator/dryer can come apart if it has been exposed to air for too long and ruin that band new compressor you just bought (which I imagine was not very cheap). As far as the oil goes, you need to look at your new compressor paperwork....some new compressors come already filled with the proper amount and type of A/C system oil. If the compressor you bought was "dry" (did not come with oil) then I do not think that the two ounces mixed in with your charge can are going to be enough. You need to look in a book or online though to find out what the specifications and capacities are for that particular year model.
 
  #6  
Old 09-22-08, 03:39 PM
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Hey, Thanks for the help guys. Based on what I read I'm going to add 2 oz of pag 150 to the suction (low) side, close it up and pull a vacuum to 27hg for a min on 30minutes and hold to make sure I have no leaks, and charge. And I'll definetly take the advice on the other components. Thanks All
 
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