Home >> Audi >> 2020 >> SQ8 Premium Plus >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning (3 Of 3) >> 87 Air Conditioning >> Refrigerant Circuit >> Check Valves In Refrigerant Circuit, Removing And Installing >> Check Valve In Refrigerant Line From Condenser, Removing And Installing >> Tightening Specifications