Can you fill an R12 system with R134a?
R134a systems operate at higher discharge-side pressures than R12, which can cause compressor seals to leak. Bottom line, R134a simply doesn’t cool as well as R12. The advantage of ester oil is that it works with both R12 as well as R134a, so you can fill the system with it and then use either refrigerant.
When should an AC system be flushed?
Always flush the AC system whenever you replace or remove the AC compressor, or whenever there is any contamination in the system. Every time remove and inspect the orifice tube. From the orifice tube, you can see the AC system’s condition.
Can you flush AC compressor?
If the compressor was replaced due to defect or component failure then a flush is needed. If the compressor has failed suddenly due to internal damage or excessive wear, then flushing is especially necessary to remove all metal debris and contaminants.
How to convert an R12 compressor to a R134a?
R12 to R134a Conversion steps. The first step is first to make sure that the AC system is empty. Discharge and make sure to recycle it properly. Make sure your AC compressor is in good shape, otherwise replace it. Flush your current system entirely of R12 without leaving any traces of the R12 in it.
What kind of refrigerant is used in the R4 compressor?
ACDelco Refrigerant Compressor Oil (150 Viscosity) is intended for use on R4 and A6 compressors within R-134a refrigerant systems. This product must be used for GM-Harrison- manufactured compressors using R-134a refrigerant oil. One cause of poor air conditioning (A/C) performance is compressor failure.
Can a GM R-12 be converted to 134A?
Contrary to popular belief, most cars originally equipped with R-12 can be converted to 134a and still keep you just as cool. Understanding the basic type of a/c systems GM used on their classics will help with you determine the best route for your project. This is a generic term for the earlier valve regulated systems for the early GM vehicles.
What can the R134a air conditioner be used for?
The R134A is now commonly used in the air conditioning systems in vehicles, but it can also be used in fridges, freezers and other coolers similar to the applications of the R12. The R134A is sometimes also used for cooling overclocked computer systems.
R12 to R134a Conversion steps. The first step is first to make sure that the AC system is empty. Discharge and make sure to recycle it properly. Make sure your AC compressor is in good shape, otherwise replace it. Flush your current system entirely of R12 without leaving any traces of the R12 in it.
Contrary to popular belief, most cars originally equipped with R-12 can be converted to 134a and still keep you just as cool. Understanding the basic type of a/c systems GM used on their classics will help with you determine the best route for your project. This is a generic term for the earlier valve regulated systems for the early GM vehicles.
Where is the POA valve on a 134a compressor?
Typical 134a charge rate will be approximately 70-80% of the factory R12 charge amount. The POA Valve is installed on the evaporator, near the firewall. (Click here for a typical photo) Change or restore the filter-drier. Drain the compressor oil and recharge with 134a compatible (PAG or Ester Oil) oil.
When did GM washers start replacing R12 compressors?
Theres a GM TSB somewhere regarding this as starting in 93 ALL trucks wether R-12 or R-134 got the new stepped style hookup. I have yet to see a problem with the GM washers when installed correctly.
