Volkswagen Polo Service & Repair Manual: A/C Service and Recycling Units

Pressure Gauge, Tests and Measurements

Indicators on pressure gauge 1 -  Temperature scale for refrigerant R134a CF3–CH2F or CH2F–CF3. 2 -&nb ...

Extraction System Group Classifications

At this time, A/C service units for extracting, cleaning and filling refrigerant for motor vehicle A/C systems are available from various manufacturers. ...

Other materials:

A/C Programmer -J127
This programmer switches the refrigerant flow direction through the second evaporator if the temperature on the cooling fins on the second evaporator lowers to the freezing point for water (icing protection).   ...

Vehicle Electrical System, General Repair Information
  Caution Follow the procedure in the repair manual when disconnecting and connecting the battery.   WARNING Some tools are supplied wit ...

Oxygen Sensor Unit Protective Pipes
  Note In addition to using the part number, the protective pipe can also be used for identification. Version D1, 6 openings, 3.5 mm each     Only used with the 4-pin oxygen sen ...