Volkswagen Golf / Golf GTI / Jetta. Manual - part 993

87-172

 

    

Fig. 5 

Clutch coil, installing 

-  Install coil on compressor. 

-  Position pin -A- in recess 

    

Notes: 

Fig. 6 

Clutch plate gap, 
checking 

-  Check gap with feeler gauge. 

 

 Gap: 0.3 - 0.6 mm (0.0118 - 

0.0236 in.) 

 Gap must be within tolerance 

around entire circumference. 

 If gap is outside tolerance range, 

remove clutch plate and adjust 
gap by adding or removing shims 

 item 3 , 

 

Page 87-168

 . 

Compressor bracket, removing and installing

13/2/2005

Select a topic

  

General information for A/C system

  

Introduction

  

Other reference material

  

Principles of air conditioning systems

  

Vapor pressure table for refrigerant R134a

  

Refrigerant R134a

  

Characteristics of refrigerant R134a

  

Refrigerant oil

  

Comfort

  

Mode of operation of air conditioning system

  

General work safety

  

Safety measures for working on vehicles with air conditioning system 
and for handling refrigerant R134a

  

Basic rules for working on refrigerant circuit

  

General information on refrigerant circuit

  

Components of refrigerant circuit

  

Design of refrigerant circuit

  

Connections for quick-release coupling on refrigerant circuit

  

Switches and sensors on refrigerant circuit and corresponding 
connections

  

Electrical components not installed on the refrigerant circuit

  

Pressures and temperatures in refrigerant circuit

  

Refrigerant circuit with expansion valve

  

Refrigerant circuit with restrictor and reservoir

  

Tests and measurements performed using pressure gauge

  

Service and recycling units

  

Refrigerant circuit repair information

  

Laws and regulations

  

Laws and regulations

  

Recycling and refuse law

  

R12 refrigerant circuit, converting to R134a refrigerant circuit and 
servicing (retrofit)

  

Keeping refrigerant records

  

Refrigerant circuit

  

Important repair notes on air conditioning systems

  

Refrigerant circuits, converting from R12 refrigerant to R134a 
refrigerant

  

Working with the service station

  

Service station, connecting for measurement and testing

  

Refrigerant circuit, discharging using service station

  

Refrigerant circuit, evacuating using service station

  

Refrigerant circuit, charging using service station

  

Refrigerant, transferring to charging cylinder of service station

  

Service station, draining

  

Refrigerant circuit, cleaning (flushing) with compressed air and 
nitrogen.

  

Refrigerant circuit, tracing leaks using leak detector V.A.G 1796

  

Refrigerant R134a - Servicing

13/2/2005

Refrigerant circuit, tracing leaks using leak detection system VAS 
6196

  

Complaints

  

Possible complaints at refrigerant circuit

  

Service station, connecting

  

On vehicles with connection on low and high-pressure side of 
refrigerant circuit

  

Pressures, checking on vehicles

  

Pressures in refrigerant circuit, checking (using service station)

  

Restrictor and reservoir (with internally regulated compressor), 
checking

  

Expansion valve and receiver (with internally regulated compressor), 
checking

  

Expansion valve and receiver (without internally regulated 
compressor), checking

  

Restrictor, reservoir and A/C Compressor Regulator Valve N280 
(externally regulated compressor), checking

  

Expansion valve, receiver and A/C Compressor Regulator Valve 
N280 (externally regulated compressor), checking

  

Components, replacing

  

Components (except compressor, reservoir or receiver) leaking or 
damaged

  

A/C compressor. replacing

  

Receiver or reservoir and restrictor, replacing

  

Testing equipment and tools

  

List of testing equipment, tools and materials

  

Glossary

  

Refrigerant R134a - Servicing

13/2/2005

00 - 1

  

  

General information for A/C system

 

Introduction

 

 

The purpose of this Repair Manual is to provide foremen 
and mechanics with the basic knowledge needed to ensure 
expert working.

Note: 

- Only the careful study of this documentation and practical 
implementation of the information contained can guarantee 
expertise in the field of motor vehicle air conditioning 
systems. 

 

It should also be available for presentation to the 
responsible supervisory agency on request.

Other reference material

 

- Technical Service Handbook outlining action to be taken 
to rectify current problems 

- Repair Manual for model-specific servicing work 

- Catalog of Electrical Wiring Diagrams, Troubleshooting 
Component Locations 

- Self study programs 

- Video programs for in-dealership training 

- Catalog of Special tools / Workshop test binder 

- Service Organization Volume 1 additional equipment  

Principles of air conditioning systems

 

Physical principles:

 

 

The four known states of water also apply to air 
conditioning system refrigerants.

1. gaseous (invisible)  
2. vapor  
3. liquid  
4. solid  

General information for A/C system

13/2/2005