Thanks to all. I finally found it. It is under the windshield like you said, behind a black sheath full of wires, and a large rubber water shield. Nothing like making it easy to find.

 

Happy to know you succeeded in locating the lo side port. Not to rain on your parade, but please be sure the R12 you are going to use is genuine because there are some refrigerants out there that claim to be R12 and are contraband and contaminated. If your source is sure it is from old stock before the false junk started to get circulated around , go for it.

 

Yeah, he has had it stored in his shop in an old fridge for many years. I still have to change the fitting cause we don't have any old gauges. I have to remove the valve from the old fitting before screwing the new one on it, right?

 

If you are going to stay with R12, you should be able to use the original fittings and the original R12 gauges. If the system is just low on R12 , you can just add R12 slowly to the low side , system running on max cool setting, until the low side gets cold . Don't forget to wear eye protection when working with refrigerant. What kind of container is the R12 in right now?

 

The Freon is in cans, I have not seen it yet. We don't have any original gauges, so I will have to use the retrofit fittings.

 

Would you mind very much and tell us exactly what you are planning to do?
I'm wondering if this is going to be like the bee situation where the way the bee is designed it is not supposed to be able to fly, but yet it does.
There are some things I think you are going to try to do and I'm not sure you can do them and yet you just might be able to do them.

 

going to change the fittings and recharge with the new recharge hose and gauge using R 12.

 

Sounds like it should work at least to get the refrigerant into the system, but if the system has been open to the atmosphere, you could be wasting some R12 without evacuating the system first.

 

A guy I have talked to on line for years, just retrofitted his Jeep and changed it over to 134a and didn't evaporate the system. He says it works great. Worth a shot.

 

Hi again Rusty,
Your friend was just plain lucky that he got away with not evacuating the system once it was opened to air and moisture. Keep in mind that moisture when mixed with R12 will produce hydrochloric acid in the system and eventually cause unbelievable problems. If you didn't know you should evacuate the system, that's one thing, but now you know better unless your system was never opened to the atmosphere.