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
READ NEXT:
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:
Overview - Subframe
Overview - Subframe, FWD
Caution
There is a risk of damaging the threads on the subframe
threaded connection to the body.
The subframe bolts on the body must not be loosened or
tightened with an impact wrench.
Always install all bolts by hand for the first few turns.
1 - Bo
Trailer Hitch
Trailer Hitch Socket, Removing and Installing - Version 1
Removing
- Turn off the ignition and remove the key.
- Remove the bolts -arrows-.
- Detach the socket from the retaining plate.
Socket with Rear Fog Lamp Shut-Off Contact Switch -F216-:
- Remove harness connector -2-
for
© 2019-2025 Copyright www.audia4b9.com
