On a 7720 I will be flushing the a/c system, replacing the expansion valve and dryer, and installing a reman compressor from the John Deere dealer. The instructions for the SE501457 compressor state that the unit has been filled with 10 oz. of PAG oil. What is the PAG oil capacity and R134a freon capacity as stated in the JD Technical Manual for a JD 7720? Thanks for your help!