a/c recharge 80s c10

[Dsquared]

recover the r-12, unhook lines at evap. core, dryer, etc, remove orifice tube. shoot some a/c flush through the system. blow out with compressed air. buy a retrofit kit for 134-a and a new dryer. install kit, new orifice tube and dryer and pull a vacuum for a minimum of 1 hour. here's the fun part. you only put 85% of r-134 in the system. for example....if your system holds 2lb of r-12, you only need to put 1.7lb of r-134. don't forget to put some "pag oil" in as well. I did this to mine except I replaced the compressor too. it's been 3 years and it still works great.