I'm a brand new HVAC/R journeyman curently deployed. My knowledge base keeps me out of trouble but I am having issues and don't have any other A/C techs out here. With that said, here it goes:
We have a unit that isn't cooling. Shocking. It's a small 150 cubic/ft portable walk-in refrigerator/freezer. I fixed a serious leak on the hot-gas solenoid gasket and weight the charge back in (8lbs, r-12). Suction line is only cold AFTER the crankcase regualtor valve, and the disharge line is hot coming right off the compressor, but not at the condeser. The sightglass slowly fills up and bubbles, so it lead me to think there is a restriction. My sneaky suspicion is the TXV isn't driving. I know this all sounds like a bit of a cluster**** but any help is appreciated.