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
SEE MORE:
Overview - Drive Axle
1 - Clamp
Replace after removing
Tensioning. Refer to
→ Chapter "Clamp on Triple Roller Joint and Outer Joint, Tensioning".
2 - CV Boot
If the drive axle has a peened triple roller joint, then the triple
roller joint has an adapter installed
The CV boot must fit
Vehicles with Restrictor, Reservoir and A/C Compressor Regulator Valve
-N280- (Externally Regulated A/C Compressor), Checking Pressures
Specified Values for the Refrigerant
Circuit Pressures
Note
Connect the Air Conditioning (A/C) service station. Refer to
→ Chapter "A/C Service Station, Connecting".
Observe the test requirements. Refer to
→ Chapter "Pressures, Checking".
- With the ignition switched
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