Volkswagen Polo Service & Repair Manual: Refrigerant Circuit with Restrictor and Reservoir

Refrigerant Circuit with Expansion Valve and Evaporator

1 -  Evaporator 2 -  Expansion Valve 3 -  Valve for extracting, filling and measuring ...

Refrigerant Circuit Extraction and Filling Valves for Service Station Couplings

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Other materials:

Physical Principles
The four known states of water also apply to air conditioning system refrigerants. 1 -  gaseous (invisible) 2 -  vapor 3 -  fluid 4&nbs ...

A/C Compressor without Magnetic Clutch
  Caution Non-approved tools or materials such as leak sealing additives can cause damage or malfunctions in the system. Only use tools and materials approved by the manufactu ...

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 ...