Overview - Refrigerant Lines, Expansion Valve, Inner Heat EXCHANGER
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Audi S6, 2018 Audi A6 Quattro, 2018 Audi A6, 2017 Audi S6, and 2017 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
- Retaining Clamp
- Bolt
- Refrigerant Line - High Pressure Side
- From the condenser
- Refrigerant line, disconnecting and reconnecting. Refer to REFRIGERANT LINES, DISCONNECTING AND CONNECTING AT CONDENSER .
- Removing and installing. Refer to CONDENSER, REMOVING AND INSTALLING .
- Union Nut
- 16.5 Nm
- O-Ring Seal
- Replacing. For the correct version. Refer to the Parts information.
- Coat with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
- Refrigerant Shut-Off Valve (Hybrid Battery Refrigerant Shut-Off Valve 1 -N516- / Refrigerant Shut-Off Valve -V424-)
- There are different designations depending on the vehicle (Hybrid Battery Refrigerant Shut-Off Valve 1 -N516- on the Audi A6 Hybrid or the Refrigerant Shut-Off Valve -V424- on the Audi A6 e-tron). Refer to the Appropriate Wiring Diagram.
- Installed in the left plenum chamber
- To check, use the Vehicle Diagnostic Tester in the "Guided Fault Finding" function
- Removing and installing. Refer to Hybrid Battery Refrigerant Shut-Off Valve 1 -N516-, REMOVING AND INSTALLING .
- O-Ring Seal
- Replacing. For the correct version. Refer to the Parts information.
- Coat with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
- Union Nut
- 16.5 Nm
- Refrigerant Line - High Pressure Side
- To the inner heat exchanger
- Removing and installing. Refer to INNER HEAT EXCHANGER, REMOVING AND INSTALLING .
- M6 Bolt
- 9 Nm
- O-Ring Seal
- Replacing. For the correct version. Refer to the Parts information.
- Coat with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
- M6 Bolt
- 9 Nm
- Refrigerant Line - Low Pressure Side
- To the inner heat exchanger
- Removing and Installing. Refer to REFRIGERANT LINES WITH INNER HEAT EXCHANGER, REMOVING AND INSTALLING .
- There are different versions depending on the refrigerant (R134a or R1234yf). Refer to the Parts information.
- O-Ring Seal
- Replacing. For the correct version. Refer to the Parts information.
- Coat with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
- Bolt - M8
- 10 Nm
- Quantity: 2
- Bolt
- 10 Nm
- Quantity: 2
- O-Ring Seal
- Replacing. For the correct version. Refer to the Parts information.
- Coat with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
- Expansion Valve
- There are different versions. Refer to the Parts information.
- Refrigerant line, disconnecting and reconnecting. Refer to INNER HEAT EXCHANGER, REMOVING AND INSTALLING .
- Removing and Installing. Refer to EXPANSION VALVE, REMOVING AND INSTALLING .
- There are different versions depending on the refrigerant (R134a or R1234yf). Refer to the Parts information.
- O-Ring Seal
- Replacing. For the correct version. Refer to the Parts information.
- Coat with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
- Refrigerant Line with Inner Heat Exchanger
- The warm, fluid refrigerant flowing on the high pressure side releases energy into the cold, vaporous refrigerant flowing on the low pressure side. This increases the cooling efficiency of the A/C system.
- There are different versions. Refer to the Parts information.
- Removing and installing. Refer to INNER HEAT EXCHANGER, REMOVING AND INSTALLING .
- Grommet
- Bracket
- For the refrigerant line with the inner heater core
- Bolt