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:

Replacing Reservoir, No Contaminants, No Loss of Refrigerant
  Discharge the refrigerant circuit. –  Replace the restrictor depending on the vehicle. –  Remove receiver or accumulator. –  Remove dirt from receiver or res ...

Wire Break with Dual Repair Point
Repair point with intermediate wire section –  Free up wire intended for repair at two points (approximately 20 cm to both sides of respective repair points). –  If required, remove wiring harness wra ...

Refrigerant Circuit, Tracing Leaks, with Electronic Leak Detector -VAG1796
  Note This repair manual describes different methods for detecting leaks in the refrigerant circuit. These methods have been tested and result in success when used correctly. If when searching for compressed air / Nit ...