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:

Tire Sidewall Swelling
A swelling in the flank of the tire indicates that the substructure of the carcass has been damaged.     Typical causes for such damage include, for example, driving over curbs at a sharp angle. ...

Checklist
Never carry out any work on the engine or in the engine compartment if you are not familiar with the requisite procedures and general safety requirements, or if you only have access to incorrect operating equipment, service fluids, and unsuitable tools   . The work should be carried ou ...

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 ...