Why did R134a replace r12?
R134a systems work at higher discharge-side pressures than R12 systems, which could lead to compressor seals leaks. Additionally, since R134a is composed of much smaller molecules, it has a greater chance of leaking from an R12 system.
What happens if you put 134a in an r12 system?
The oils are different and not compatible and can cause an explosion. R134a is also a smaller molecule than r12 so if you HAD a small leak with r12 that you did not fix you have an even bigger leak now. R134a is so much smaller than r12 that it will leak right through the older hoses used for r12.
How do I know if my AC is R-12 or R-134a?
Start your car, turn the ac on, pop your hood, look and listen. If it is R12 the caps on the charge fittings will be about the size of the valve stem cap on your tires. If it was R134 then the fitting cap would be between the size of a dime or a nickel. r12 fittings are the same side for low and high side…
Can a R-12 air conditioner be converted to an R-134a?
Because R-12 is no longer produced in the U.S. Supplies of recycled R-12 still exist, and some R-12 is still brought in from offshore suppliers. But it is hard to find and expensive. That’s why many people simply recharge their older R-12 air conditioning system with R-134a after repairs have been made. R-134a Retrofit Conversion Costs
When did refrigerant retrofit change from R-12 to R-134a?
When the automotive industry made the shift to R-134a back in 1995-1995, they all published Technical Service Bulletins that covered retrofit procedures for their various makes and models. It takes some searching, but these detailed bulletins are still available on the various OEM Technical Service websites, most of which charge a fee to access.
Can a Ford fx-15 compressor be replaced with R-134a?
Because R-134a raises compressor discharge pressures and increases the compressors work load, some lightweight compressors may not be rugged enough to tolerate R-134a over the long haul. This applies to the Harrison DA6 and Ford FX-15 compressors. The Harrison DA6 can be replaced with a HD-6, HR-6 or HR-6HE compressor.
Is the Harrison DA6 compressor compatible with R-134a?
Compressor durability can be a concern on some older applications. Because R-134a raises compressor discharge pressures and increases the compressors work load, some lightweight compressors may not be rugged enough to tolerate R-134a over the long haul. This applies to the Harrison DA6 and Ford FX-15 compressors.