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05-28-2013, 11:05 PM | #1 |
Drives: 2007 Yaris S AT Sedan Join Date: Oct 2010
Location: Oregon
Posts: 6
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Replacing A/C Compressor (depressurizing system?)
Hello everyone, I'm going to be replacing my A/C compressor in my '07 Sedan and I had a question or two.
First a little backstory: The compressor has not functioned in at least 3 years now (likely more). The system was diagnosed by toyota because it wasn't functioning and they came to the conclusion that the compressor was the issue. I'm planning to purchase a new (re-manufactured) unit off rockauto.com and just replace it myself to save on cost (toyota wants around 2k for parts/labor). I was just going to dive in but I'm worried about pressure in the system. I've wrenched on cars plenty of times but never with the HVAC system. Is there worry of Freon escaping forcefully when I disconnect the hoses from the compressor? I don't know how or even if I need to depressurize the system. I see that term referenced but never heard how to properly do that? That's really my only question, I know about matching the oil level in the new compressor to the level the one in there currently has. Can anyone offer some tips, knowledge or advise me on this procedure? It's much appreciated! |
05-28-2013, 11:08 PM | #2 |
Drives: soarer Join Date: Feb 2011
Location: Beautiful British Columbia
Posts: 954
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I would check the repair manual first (Sorry can not help more)
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05-28-2013, 11:28 PM | #3 |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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If the system is pressurized you want to bring it to a shop that can collect the Freon (as it is illegal to vent it to the air). Once it is purged, you can disassemble it without issue.
I own a vacuum pump and manifold gauge set, so do my own AC work. With my manifold, I can connect a tank to capture the exiting Freon for proper disposal, if I am working on a pressurized system.
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05-29-2013, 01:21 PM | #4 | |
Drives: Yaris 1.33 litre 2011 Join Date: Dec 2009
Location: Wigan
Posts: 124
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Quote:
Regards Geoff Peace. |
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05-30-2013, 12:53 PM | #5 | |
Drives: 2007 Yaris S AT Sedan Join Date: Oct 2010
Location: Oregon
Posts: 6
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Quote:
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05-30-2013, 01:27 PM | #6 | |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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Quote:
To verify that before disconnecting the tubing, you can remove the cover from the valve on the low pressure line (the larger diameter tubing) and pressing the center of the valve for a split second. If nothing comes out it is empty.
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05-30-2013, 02:24 PM | #7 | |
Drives: 2007 Yaris S AT Sedan Join Date: Oct 2010
Location: Oregon
Posts: 6
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Quote:
Where is that valve you speak of located? Easy to get to? |
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05-30-2013, 02:48 PM | #8 | |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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Quote:
AC LP Valve.jpg
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