jgrote

AC work is not difficult, but does require some special tools. You'll need a set of gauges. HF is fine for this. You'll need a vacuum pump. HF is fine for this too. Autozone by me will actually loan one out. Then you'll need to watch a bunch of YT videos to learn what all the numbers on the gauges mean. When you replaced your compressor, there should have been paperwork with it that said if there was oil in it already, and how much. There are resources for telling you how much you'll need to add based on what you're replacing. It's critically important you get this part right. Once the system is repaired and back together, put it on a vacuum for 15-30 minutes. Humidity is your enemy, so wetter climates need more time on a vacuum. Then, turn off all the valves and the pump, and mark the needles on your gauges. Now go and get some lunch. The longer you can let it sit with a vacuum in it, the better you'll know if there is a leak. Then fill with the appropriate amount of R134a. Now for the MOST important part. Be careful when buying your refrigerant. Some of them have oil added to them. Some have dyes. Some have stop leak. All that crap is terrible for your system. Get the right stuff, and use the right amounts. More is not better here. Same deal with the oil. There are many kinds. Get the right one. I'm new to these trucks, so I don't know what the right stuff is yet, but I've rebuilt enough AC systems to know what works, and what doesn't. Oh, and if your compressor grenaded, you'll need to flush the system out. And ALWAYS replace the dryer if the system has been empty for any amount of time, had a decent leak, or you live where there is any humidity. Wow, my first post here turned into quite a rambling mess. Enjoy!