Volkswagen Golf Service & Repair Manual: Air conditioning system with refrigerant R134a
- General notes on air conditioning systems
- Introduction
- Additional information
- Basics of air conditioning
- Refrigerant R134a
- Characteristics of refrigerant R134a
- Refrigerant machine oil
- Comfort
- General safety
- Basics for working on refrigerant circuit
- General information on refrigerant circuit
- Refrigerant circuit components
- Design of refrigerant circuit
- Evacuation and charging valves for quick-release couplings of air conditioner service station on refrigerant circuit
- Switch and sender in refrigerant circuit and related connections
- Electrical components not installed in refrigerant circuit
- Test and measurement work that can be performed using a pressure gauge
- Air conditioner service and recycling equipment
- Statutory texts and instructions
- Statutes and regulations
- Recycling and refuse law
- Converting R12 refrigerant circuits to R134a refrigerant circuits and repairing them (retrofitting)
- Maintaining records on refrigerant
- Refrigerant circuit
- Important repair notes on air conditioning
- Retrofitting refrigerant circuit from R12 refrigerant to R134a refrigerant
- Working with the air conditioner service station
- Important notes for working with the air conditioner service station
- Connecting air conditioner service station for measuring and checking
- Draining refrigerant circuit using air conditioner service station
- Evacuating refrigerant circuit using air conditioner service station
- Charging refrigerant circuit using air conditioner service station
- Bringing air conditioning system into service after charging
- Charging container in air conditioner service station with refrigerant
- Draining air conditioner service station
- Detecting leaks in refrigerant circuit
- Leak detection in refrigerant circuit using compressed air or nitrogen
- Searching for leaks in refrigerant circuits using leak detector -V.A.G 1796
- Detecting leaks in refrigerant circuit using leak detecting system -VAS 6196- or leak detecting system -VAS 6201- or a later model
- Clearing refrigerant circuit of contaminants
- Blowing through refrigerant circuit with compressed air and nitrogen
- Purging (cleaning) refrigerant circuit with refrigerant R134a
- Complaints
- Connecting air conditioner service station
- Checking pressures on vehicles
- Checking pressures in refrigerant circuit (using air conditioner service station)
- Checking systems with a restrictor and collector (with internally regulated air conditioner compressor)
- Checking systems with an expansion valve and reservoir (with internally regulated air conditioner compressor)
- Checking systems with an expansion valve and reservoir (without regulated air conditioner compressor)
- Checking systems with a restrictor and reservoir and air conditioner compressor regulating valve -N280- (with externally regulated air conditioner compressor)
- Checking systems with an expansion valve, receiver and air conditioner compressor regulating valve -N280- (with externally regulated air conditioner compressor)
- Renewing components
- In the event of leaking or damaged components (apart from the air conditioner compressor, receiver or reservoir)
- Renewing air conditioner compressor
- Renewing receiver or reservoir, and restrictor
- Testing equipment and tools
Functional description of remote control for auxiliary and supplementary
heater
Note
The auxiliary and supplementary heater can be switched on
and off from a distance of several 100 metres (open space) using
the remote c ...
Other materials:
Removing and installing backrest release mechanism
Removing
–
Remove backrest cover and backrest padding
→ Chapter.
–
Pull operating lever -1-
upwards and unscrew bolt -2-.
...
Refrigerant circuit with expansion valve and evaporator
1 -
Evaporator
2 -
Expansion valve
3 -
Valve for extracting, charging and measuring
4 -
Receiver with dessicant bag or cartridge
...
Undercoated areas, body overview indicating differing coat thicknesses
Note
Undercoating (stone-chipping protection) applied during repair work
must be identical in appearance and thickness to the original
undercoating.
Water drainage holes must remain clear.
All threaded studs and welded nuts with metric ...
