Working on the 944 a c system is no different than working on any other automotive a c system.
Automotive air conditioning service manual.
An interesting read said from the viewpoint of being a highly skilled commercial air conditioning engineer of many years and qualifications.
Under certain conditions pressurized mixtures of r 134a and air can be combustible.
System maintenance troubleshooting repair and specifications haynes automotive repair manual series no.
If your car s air conditioner isn t blowing cold air the first thing you should look for are signs of leaking or an a c compressor that does not engage.
Since air conditioning systems with r12 are susceptible to leaks ozone damage and environmental concerns pushed for the replacement of this refrigerant.
Removing internal fittings and filters can release pressurized refrigerant.
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Automotive air conditioning training manual 9.
Certainly not up to the usual standard of haynes manuals.
We commonly refer to this refrigerant as r134a.
Use care and always wear appropriate safety wear.
Find an auto repair manual for your car get instant access to your vehicles drive belt routing complete wiring diagrams trouble code information and other available updates and factory bulletins.
On older automotive air conditioning systems the factory installed refrigerant was r12.
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An amendment to the united states clean air act has mandated that we phase out r12 as the refrigerant of choice.
Never use compressed air to leak test or pressure test an r 134a system or r 134a service equipment.
The haynes automotive heating air conditioning systems manual.
Hvac 02 air conditioning troubleshooting and repair introduction since i m constantly receiving questions on 944 air conditioning systems i figured it s time to come up with come helpful troubleshooting tips.
R134a properties since 1993 the automotive industry of developed countries has started to use a non ozone depleting refrigerant hfc 134a hydrofluorocarbon its chemical name being tetra fluoroethane.
A faulty automotive air conditioner can be one of the more difficult issues to diagnose and repair.
This diy manual covers both r 12 and r 134a a c systems as well as converting to an r 134a system types of automotive a c systems service and diagnostic tools and much more.
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The paper quality is of low grade.
It is limited in some respects but no book could possibly cover all aspects of the trade.
They have all the same.