If you see the black dirt thing that is probably where it leaked out. Asold as it is you will be very clucky for it to break loose to change the o ring that is leaking. But if youdo then all you need do is buy one of the kits priced anywhere from $30-40 nd read the instructions and install the R-134a to the system. You will h ave to add oil to the system which comes with the kit and the best way is to dump the correct amount of oil in the open pipe that you take off. Then add the freon with the adapters that come with the kit. There is no need to change compressors or other parts unless they ae bad. The reason yo ucan't find an expansion valve is there isn't one. All it has is an orfice that sometimes will plug by the way.
Thursday, February 18th, 2010 AT 7:20 PM