Audi A4 Owners & Service Manuals

Audi A4: Refrigerant Circuit Components Allocation, High and Low Pressure Sides

Audi A4 (B9) 2016-2025 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit General Information / Refrigerant Circuit Components Allocation, High and Low Pressure Sides

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 General Information

High pressure side are the condenser, receiver/dryer and restrictor or expansion valve to separate the high and low pressure liquid ends. High pressure results from the restrictor or expansion valve

 Condenser

The condenser conducts heat from compressed refrigerant gas to the ambient air. This condenses the refrigerant gas to fluid.   Note Depending on the version of the refrigerant circuit, the r

 Reservoir

The reservoir collects the vaporized and gaseous mixture coming from the evaporator to ensure the compressor only receives gaseous refrigerant. Gaseous refrigerant is formed from the vapor. The ref

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 Radiator/Radiator Fan

Overview - Radiator/Radiator Fan 1 - Radiator Removing and installing. Refer to → Chapter "Radiator, Removing and Installing". After replacing, replace entire amount of coolant 2 - Drain Plug 1.5 to 3 Nm 3 - O-ring Replace after removing 4 - 

 Ball Joint, Removing and Installing

Special tools and workshop equipment required Torque Wrench 1332 40-200Nm -VAG1332- Torque Wrench 1332 Insert - Ring Wrench - 21mm -VAG1332/7- Ball Joint Splitter -T40277-   Caution This procedure contains mandatory replaceable parts. Refer to component overview and parts catalog prior

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