VW Golf manuals

Volkswagen Golf Service & Repair Manual: Checking

Switch off ignition.
–  Connect manifold gauge (air conditioner service station).
–  Read pressure gauge. It may display two results, A and B.
   
Ambient temperature in degrees centigrade Pressure in the refrigerant circuit in bar positive pressure
+15°C 3.9
+20°C 4.7
+30°C 6.7
+40°C 9.1
 
A- The pressure in the refrigerant circuit is less than shown in the table, (insufficient refrigerant in the circuit).
- Check for leaks using leak detector.
- The high-pressure safety valve has opened; check the activation for the radiator fan referring to the current flow diagram.
Check refrigerant pipes and refrigerant hoses for bends that have too tight radius (restrictions in cross-section) and for external damage. If no faults are found, purge the refrigerant circuit.
B- The pressure in the refrigerant circuit is greater than or equal to the value in the table.
–  Start engine.
–  Set air conditioning system to maximum cooling power.
–  Open doors.
–  Open vents in dash panel.
The air conditioner compressor is driven by the engine, via the V-belt and magnetic clutch.
  Note
If the air conditioner compressor is not being driven, check the power supply for the air conditioning system magnetic clutch -N25- in accordance with the current flow diagram.
If power supply is OK, repair magnetic clutch.
If the air conditioner compressor is not being driven, check the refrigerant circuit:
–  Raise engine speed to 2,000 rpm.
–  Observe the manifold gauge.

Specifications

High-pressure side:
Increasing from the pressure when the engine is stopped to a maximum of 20 bar positive pressure.
Low-pressure side:
Decreasing from the pressure when the engine is stopped to 1.3 bar positive pressure.
Test prerequisites
Radiator and condenser must be clean (clean them if necessary). The V-belt for air conditioner compressor and alternator is correct ...

Checking systems with a restrictor and reservoir and air conditioner compressor regulating valve -N280- (with externally regulated air conditioner compressor)
  Note Connecting air conditioner service station → Chapter. Observe the test prerequisites → Cha ...

Other materials:

Removing and installing wheel housing trim, saloon
  Note Removal and installation are described for the left vehicle side. Follow same instructions for the right side as appropriate. Special tools and workshop equipment required     ...

2-pack HS Optimum clear coat
Designation: 2-pack HS Optimum clear coat -LZK 769 K02 A5- Issued 10.2012 Product description 2-pack HS Optimum clear coat is a VOC compliant (VOC content < 420 g/l), high ...

Assembly overview - skid plate
  Note The removal and installation procedures may have to be modified slightly depending on engine fitted. 1 -  Underride guard Removing –  Remove bolts -2-, -3- and -4-. –  Pull out noise ...

© 2016-2022 Copyright www.vwgolf.org