Audi A4: Refrigerant Circuit General Information
Audi A4 (B9) 2016-2026 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit General Information
- Vehicles with a High Voltage System (Hybrid Vehicles)
- Refrigerant Circuit Components Allocation, High and Low Pressure Sides
- Refrigerant Circuit
- Connections for Quick-Release Coupling on Refrigerant Circuit
- Switches and Sensors on Refrigerant Circuit and Connections
- Refrigerant Circuit Pressures and Temperatures
- Pressure Gauge, Tests and Measurements
- Service and Recycling Units
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Vehicles with a High Voltage System (Hybrid Vehicles)
Extremely Dangerous Due to High-Voltage
The high-voltage system is under high-voltage. Death or serious
bodily injury by electric shock.
- Individuals with electronic/medical life- and health su
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
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Refrigerant Circuit, General Precautions
General Information
Ensure absolute cleanliness when working.
Wear safety goggles and gloves when working with refrigerant
and nitrogen.
Workshop extraction systems are to be switched on.
Use the service station to discharge the refrigerant
circuit, only then open screw connections and replac
Ribbed Belt Pulley without Freewheel, Removing and Installing
Special tools and workshop equipment required
Generator Belt Socket -3310-
Inner hex socket 8 mm or TORX
T50
Removing
- Remove the generator if necessary. Refer to
→ Electrical Equipment; Rep. Gr.27; Generator; Generator,
Removing and Installing.
- For some engine ty
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