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
Special tools and workshop equipment
required
Vehicle Diagnostic Tester with the "Guided Fault Finding"
function and the corresponding connection lines. Refer to
Workshop Equipment.
A standard thermometer (for temperature measurement; if
necessary, a thermometer with two measuring probes for
Special tools and workshop equipment
required
Coolant Collection System -VAS5014- or Shop Crane - Drip
Tray -VAS6208-
Caution
This procedure contains mandatory replaceable parts.
Refer to component overview prior to starting procedure.
Mandatory Replacement Parts
O-rings - Left and