From: Rob on 12 Apr 2010 22:02 Hello, I'm thinking about changing my own a/c compressor. Is this a royal flaming pain or definitely something doable for a reasonably technical person? Any extraordinarily bizarre tools you might need? Are there any guides/books/websites that would prove to be helpful? Thank you, Rob
From: Hachiroku ハチロク on 12 Apr 2010 22:43 On Mon, 12 Apr 2010 22:02:55 -0400, Rob wrote: > Hello, > > I'm thinking about changing my own a/c compressor. Is this a royal > flaming pain or definitely something doable for a reasonably technical > person? Any extraordinarily bizarre tools you might need? > > Are there any guides/books/websites that would prove to be helpful? > > Thank you, > Rob The R-134a in modern a/c systems isn't as 'touchy' as R-12 in the old systems (It's illegal to knowingly vent R-12 into the atmosphere, IIRC) but you still should have the system evacuated. This collects all the R-134 and lubricants for reuse/disposal. Venting isn't a real good idea in the first place. Then, you have to work pretty quickly, since the refrigerant is somewhat susceptible to moisture, and it collects moisture quickly. You at least need caps to cover the hoses while you have them off to avoid contamination of the remaining refrigerant and especially the receiver/drier. You really don't want that collecting moisture. Then you have to refill it, probably using "blow up cans" (so called because if you connect them to the high side rather than the low side, the pressure builds up in the can and <BOOM, see? BOOM! wait...I'm not finished...See?>) Other than that, just unbolt the old one and bolt in the new one, fill the system with the correct amount of refrigerant/lubricant (Overfilling makes the compressor go <BOOM, see...you get the idea...>) Or, you can unbolt the old one, bolt in the new one and then drive the mess to someone with the proper equipment to refill it. Piece of cake! Now, this is for a '91 Supra, but it's basically the same procedure: http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=AC&P=23 Page AC-27 covers reinstallation.
From: Hachiroku ハチロク on 12 Apr 2010 22:44 On Mon, 12 Apr 2010 22:02:55 -0400, Rob wrote: > Hello, > > I'm thinking about changing my own a/c compressor. Is this a royal > flaming pain or definitely something doable for a reasonably technical > person? Any extraordinarily bizarre tools you might need? > > Are there any guides/books/websites that would prove to be helpful? > > Thank you, > Rob PS: on page AC-27, see where it says "evacuate air from AC system". You need a vacuum pump for that...
From: Ray O on 13 Apr 2010 15:51 "Rob" <nothear(a)nowhere.com> wrote in message news:ghQwn.28552$kj3.13458(a)newsfe08.iad... > Hello, > > I'm thinking about changing my own a/c compressor. Is this a royal > flaming pain or definitely something doable for a reasonably technical > person? Any extraordinarily bizarre tools you might need? > > Are there any guides/books/websites that would prove to be helpful? > > Thank you, > Rob In order to work on the AC system, you would need a refrigerant evacuation pump, recovery machine, scale, R134-A gauges, lubricant, R134-A, safety goggles, and a license to work on AC systems. -- Ray O (correct punctuation to reply)
From: Jeff Strickland on 14 Apr 2010 15:14 "Rob" <nothear(a)nowhere.com> wrote in message news:ghQwn.28552$kj3.13458(a)newsfe08.iad... > Hello, > > I'm thinking about changing my own a/c compressor. Is this a royal > flaming pain or definitely something doable for a reasonably technical > person? Any extraordinarily bizarre tools you might need? > > Are there any guides/books/websites that would prove to be helpful? > > Thank you, > Rob Changing the compressor is not a difficult job if the only consideration was twisting screws. The hard part comes when you want to capture the refrigerant, then evacuate the system of air and water in preparation of filling it with new refrigerant. What makes you want to replace the compressor?
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