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
SEE MORE:
Drive Axle, Removing and Installing
Caution
This procedure contains mandatory replaceable parts.
Refer to component overview and parts catalog prior to
starting procedure.
Mandatory Replacement Parts
Bolt - Outer CV Joint to Drive Axle
Clamp - CV Boot to Outer CV Joint
Clamp - CV Boot to Drive Axle
Bolts - Backing Plat
Overview - Wheel Bearing
Overview - Wheel Bearing, FWD
1 - Wheel Bearing Unit
Removing and installing. Refer to
→ Chapter "Wheel Bearing Unit, Removing and Installing, FWD".
Handling the wheel bearing. Refer to
→ Fig. "Wheel Bearing, Handling".
2 - Front Seal
3 - Wheel Bear
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