Audi Q7: Turbocharger, G-Charger

 Refrigerant Lines in Plenum Chamber, Removing and Installing

  Caution This procedure contains mandatory replaceable parts. Refer to component overview prior to starting procedure. Mandatory Replacement Parts O-ring - Front Expansion Valve to Refrigerant Line - High Pressure Side   Caution Danger due to refrigerant coming out under pressure

 Refrigerant Line with Inner Heat Exchanger

In this refrigerant pipe, the flowing fluid warm refrigerant on the high pressure side is delivered into the low pressure side as flowing, vapor, cold refrigerant to increase the efficiency of the A/C system.   Note This illustration shows a refrigerant pipe with an inner heat exchanger th