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 c
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 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
Removing
WARNING
Follow all safety precautions when working on
pyrotechnic components. Refer to
→ Chapter "Safety Precautions for Pyrotechnic
Components".
- Disconnect the battery ground cable with the ignition turned
on. Refer to
→ Electrical Equipment; Rep. Gr
The tachometer (2) displays the engine
speed in revolutions per minute (RPM). The beginning
of the red zone in the tachometer indicates
the maximum permissible engine speed for
all gears once the engine has been broken in. Before
reaching the red zone, you should shift into
the next higher gear, sel