| Installing an Air Conditioning Compressor on 1996 Blazer |
From "Talk2DIY Automotive"
episode DTTA-125 |
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- Because of the environment, -- the "green car effort" -- we want cars that will not let vapors and chemicals go into the environment. R-134A (used to be R-12 Freon) is not to be vented into the atmosphere -- you need a licensed air conditioning technician to do the work properly. You need the right equipment and training as a technician. You can change the compressor yourself; you just can't vent the AC refrigerant into the atmosphere. You have to go to a service technician to evacuate the system and draw out all of the old refrigerant.
- The AC compressor is similar to the alternator -- it is driven by a drive belt. It is a pump, something like a water pump, and instead of water, it pumps vapor back through the system. It pulls in a low vapor pressure and pumps out a high-pressure vapor (figure A).
- Inside the compressor (figure B) you would see that you are taking in a low pressure vapor of the refrigerant and the pump moves pistons back and forth as it draws in the refrigerant, and pumps out a high-pressure vapor. As the vapor leaves, it goes into a condenser that circulates the vapor to cool it.
- If you cool the vapor, it turns back into a liquid and then goes into an evaporator (figure C) that is located under the dashboard of your vehicle. The low-pressure vapor goes into the evaporator where it is boiled, and the boiled liquid turns into a vapor and the vapor returns to the compressor to begin the cycle over again.
- After you have the compressor evacuated by a service technician, you can change the compressor. It requires bolts being removed, removing the compressor, installing new O Rings, and replacing the compressor. You then have to take the vehicle back to the service technician to have the compressor charged with refrigerant.
RESOURCES :
Griot's Garage
3500-A 20th St. E.
Tacoma, WA 98427
Website: www.griotsgarage.com
Westward Tools
Website: www.westwardtools.com
Jasper Engines and Transmissions
PO Box 650
Jasper, IN 47547-0650
Toll-free: 800-827-7455
E-mail: sales@jasperengines.com
Website: www.jasperengines.com
Polishes, Waxes and Cleaners (Mothers Inc.)
Mothers® Inc.
Website:www.mothers.com
California Car Duster (The Glove)
Website: www.carduster.com
Edelbrock Performance Products
Website: www.edelbrock.com
Mobile Air Conditioning Society (MACS)
MACS
PO Box 88
Lansdale, PA 19446
Phone: 215-631-7020
Fax: 215-631-7017
Website: www.macsw.org
Car Stereo Speaker Projects Illustrated
Author: Daniel L. Ferguson
Publisher: McGraw Hill (July 2000)
ISBN: 0071359680
Order this title from Amazon.com.
GUESTS :
Jack Debiasion
Scosche Industries, Inc.
1550 Pacific Ave.
Oxnard, CA 93033
Toll-free: 800-363-4490
E-mail: jdebiasio@scosche.com
Website: www.scosche.com
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