Audi A4: A/C System, General Information
Audi A4 (B9) 2016-2025 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
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Solar Battery Maintainer -VAS6102A-
Solar Battery Maintainer -VAS6102A- Device Description
Solar Battery Maintainer -VAS6102A-
The Solar Battery Maintainer -VAS6102A- supports the vehicle
electrical system and prevents the Battery -A- from
self-discharging.
The Solar Battery Maintainer -VAS6102A- reaches a maximum
voltage of 14.3 V
Cylinder Block, Belt Pulley Side
Overview - Cylinder Block, Belt Pulley Side
All components are described under:
→ Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.13; Cylinder Block Belt
Pulley Side; Overview - Cylinder Block Belt Pulley Side.
Ribbed Belt, Removing and Installing
All procedures are described
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