Home >> Audi >> 2020 >> A4 Prestige >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> Solar Ventilation >> AIR CONDITIONING (2 Of 3) >> 87 Air Conditioning >> Refrigerant Circuit >> Expansion Valve, Removing And Installing >> Refrigerant Lines, Disconnecting From Front Expansion Valve And Reconnecting >> Tightening Specifications