Hi, I have a 87 Pace Arrow on Chevy P-30 Chassis. I seem to have the ARA Manufacturing Front A/C system. It has converted to run R-134 but I have not been able to find the proper amount of refrigerant to charge the system with. There is no site glass I can see. I do have a small leak as I need to put a can in about every couple of months.
Anyone know the proper amount?