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ac compressor installation

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Old Sep 16, 2009 | 02:14 PM
  #1  
Brute's Avatar
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Joined: Aug 2008
Posts: 22
Default ac compressor installation

Good afternoon guys!

So I finally got an AC compressor, thanks to mitch he sent it from across the states, and I need to know if I really have to uninstall/remove all the things the manual says or if i can just remove the four bolts that hold it down, letting the belt loosen all on its own and then just put the other one on, or do I have to REALLY do it how the manual says?

I ask because I have limited time and space and I was wondering if I can skip removing all the other stuff they tell you to

I appreciate all the help guys Mitch saved me alot of time and money with his help- I really appreciate that he'd take the time to do that specially with me being so new here and not being able to comment/socialize much but work and school are killing me and I really dont want to get rid of my SI cause it saves me tons on gas.

I just did the head gasket on it too and its running so good except for the idle bouncing around, which I'll be posting about at a later time when I can actually do something about it, lol!

Thanks alot guys

Brute
 
Old Sep 16, 2009 | 02:55 PM
  #2  
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You will need to slacken the belt by loosening the nut on the idler and backing off the adjusting screw. Raise the front of the car and do the rest from underneath. Remove the plastic splash guard. Unplug the compressor wire. Unscrew the 4 bolts; you will not be able to pull them all the way out. Lower the compressor down and disconnect the lines (refrigerant pressure must be ZERO first). Replace the o-rings on the line fittings with new ones. Make sure they are of the type of rubber intended for A/C systems (HNBR).

Take the "new" compressor and drain all the oil out, mostly this is done by holding it with the pulley up or various other positions and rotating the center shaft counterclockwise. Pour 3 oz of new PAG 46 oil into the inlet (larger port). Use that exact type of oil, it is specific to A/C systems. You may need to rotate the compressor to get the oil to go in. Install compressor. Once the lines are attached, rotate compressor some more to clear out excess oil.

Always put on a new receiver-drier (add 1 oz PAG 46 to it) when replacing the compressor. If your old compressor failed catastrophically (i.e. it wasn't just a leak or pulley/clutch failure), replace the condenser. (If you are replacing the condenser, before step 1 remove condenser first, it is then much easier to reach the compressor).

After all parts are installed, evacuate the system with a vacuum pump and charge it with the amount of R-134 specified on the label under the hood. Do not just charge from a can without using a mechanical vacuum pump first. You will get poor performance if you don't remove all the air. Adding some UV dye is helpful to detect any leaks in the future. Don't use any other additives, you want only R-134a, PAG 46, and possibly UV dye in your system.
 
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