System Overview - Refrigerant Circuit

Fig 1: Exploded View Of Refrigerant Circuit Components

Courtesy of AUDI OF AMERICA, LLC

Refrigerant Line - Low Pressure Side
- From the A/C compressor to the refrigerant line with inner heat exchanger
- An additional balance weight may be present on this refrigerant line depending on the refrigerant line version and the production period. Refer to the Parts Information.
- Balance weight removing and installing. Refer to LOW PRESSURE SIDE REFRIGERANT LINE BALANCE WEIGHT, REMOVING AND INSTALLING .
- Removing and Installing. Refer to REFRIGERANT LINE FROM A/C COMPRESSOR TO EVAPORATOR, REMOVING AND INSTALLING .
Refrigerant Line - High Pressure Side
- To the refrigerant line with the inner heat exchanger
- Removing and Installing. Refer to REFRIGERANT LINE FROM CONDENSER TO EVAPORATOR, REMOVING AND INSTALLING .
Refrigerant Line with Inner Heat Exchanger
- From the condenser and A/C compressor
- Removing and installing. Refer to REFRIGERANT LINES WITH INNER HEAT EXCHANGER, REMOVING AND INSTALLING .
Expansion Valve
- Tightening specification. Refer to SYSTEM OVERVIEW - REFRIGERANT CIRCUIT .
- Removing and Installing. Refer to EXPANSION VALVE, REMOVING AND INSTALLING .
A/C Compressor
- Overview. Refer to OVERVIEW - A/C COMPRESSOR POWER UNIT .
- Removing and installing from the bracket. Refer to A/C COMPRESSOR, REMOVING AND INSTALLING AT BRACKET .
- Removing and Installing. Refer to A/C COMPRESSOR, REMOVING AND INSTALLING .
Desiccant Bag/Dryer Cartridge
- Removing and Installing. Refer to DESICCANT BAG/DRYER CARTRIDGE, REMOVING AND INSTALLING .
Condenser
- Overview. Refer to OVERVIEW - CONDENSER .
- Removing and Installing. Refer to CONDENSER, REMOVING AND INSTALLING .
Refrigerant Line
- From A/C compressor to condenser
- Removing and Installing. Refer to REFRIGERANT LINE FROM CONDENSER TO A/C COMPRESSOR, REMOVING AND INSTALLING .
Nuts
- 8 Nm
Screw
- 8 Nm
Bolts
- 10 Nm
Bolts
- 22 Nm
Relief Valve on A/C Compressor
- Checking. Refer to PRESSURE RELIEF VALVE ON A/C COMPRESSOR, CHECKING .
Connector with A/C Compressor Regulator Valve -N280-
Oil Drain Plug
- Denso A/C compressor: 30 Nm
- Sanden A/C compressor: 10 Nm
Cap
- Only installed on all manufacturers
- Overview. Refer to OVERVIEW - CONDENSER .
Bolts
- 8 Nm
High Pressure Side Service Connection
- Cap: 0.4 Nm
- Valve: 2 Nm
- Refrigerant and Refrigerant Oil Capacities. Refer to TECHNICAL DATA .
- Removing and Installing. Refer to EVACUATING AND CHARGING VALVE, REMOVING AND INSTALLING, LOW AND HIGH PRESSURE SIDE .
Refrigerant Circuit Pressure Sensor -G805-
- 5 Nm
- Removing and Installing. Refer to Refrigerant Circuit Pressure Sensor -G805-, REMOVING AND INSTALLING .
Low Pressure Side Service Connection
- Cap: 0.4 Nm
- Valve: 2 Nm
- Refrigerant and Refrigerant Oil Capacities. Refer to TECHNICAL DATA .
- Removing and Installing. Refer to EVACUATING AND CHARGING VALVE, REMOVING AND INSTALLING, LOW AND HIGH PRESSURE SIDE .