Discussion Starter · #1 ·
I'm in the process of repalcing the seals on my 72 Chevelle's A/C system and converting it to another refrigerant (probably 134a) I am having trouble getting the fittings loose that attach to the evaporator. I'm afraid to wrench too hard on them for fear that I will break tha evaporator coil itself and really cause some big problems. Can someone please give me some tips on getting these fittings loose w/o breaking anything? I have already tried penetrating oil to no avail.