Audi A4: A/C System, General Information
Audi A4 (B9) 2016-2024 Service Manual / Heating, Ventilation & Air Conditioning / A/C System, General Information
- Introduction
- A/C Technology Basic Principles
- Refrigerant R134a
- Refrigerant R134a Characteristics
- Refrigerant Oil
- A/C System Operation
- General Safety Precautions
- A/C System and Refrigerant R134a Safety Precautions
- Refrigerant Circuit, General Precautions
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Introduction
The purpose of this repair manual is to provide service
advisors and technicians with the basic knowledge needed to
ensure professional and competent procedures.
Note
Only the careful study
A/C Technology Basic Principles
Physical Principles
The four known states of water also apply to air
conditioning system refrigerants.
1 - Gaseous (invisible)
2 - Vapor
3 - Liquid
4 - Solid
Refrigerant R134a
Refrigerant R134a Physical Data
Vehicle air conditioning systems make use of the
vaporization and condensation process. In this case, one works
with a substance which boils easily, designated as ref
SEE MORE:
Child Seat Anchors
Overview - Front Child Seat Anchors
1 - Child Seat Anchor
Front passenger seat only
Bolted to the seat pan
Check after an accident. Refer to
→ Chapter "Child Seat Anchors, Checking After Collision".
Replace damaged or deformed child seat anchor
Removing and installing. Refer
Subframe with Steering Gear, Removing and Installing
Special tools and workshop equipment required
Torque Wrench 1331 5-50Nm -VAG1331-
Torque Wrench 1332 40-200Nm -VAG1332-
Engine and Gearbox Jack -VAS6931-
Ball Joint Splitter -VAS251805-, not illustrated
Tensioning Strap -T10038-
Puller - Ball Joint -T40043-
Locating Pins -T40327-
C
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