Refrigerant charge amount, engine air
I have a 1987 Gulfstream Class A with a 1986 Ford 460 driveline. I want to connect a recycler and evacuate the system, vacuum, and then recharge with R-12. My question is, how do I find out the recha...
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Usually when you change refrigerant composition(12 to 134a) there is not the same exact ozs used. But it is close. Ford Motorhome chassis built for 134a use 2.25 to 2.75 lbs of 134a. Using a dial a charge is best but it will be difficult to find the lbs used on your system. I use the saturation method all the time on older vehicles where I cannot find the specific charge. It just takes time because you have to slowly charge. Doug
