Volkswagen Polo Service & Repair Manual: Refrigerant R134a

Refrigerant R134a Vapor Pressure Table

The vapor pressure table for every refrigerant is published in literature for refrigeration system engineers. This table makes it possible to determine the vapor pres ...

Refrigerant R134a Physical Data

Vehicle air conditioning systems make use of the vaporization and condensation process. In this case, one works with a substance which boils easily, designated as ref ...

Other materials:

Tires, Dismounting
Remove the valve insert.   Note If equipped handle the glued-on wheel trim carefully. Surface slightly scratched. Replace the damaged rim wheel trim.     ...

Refrigerant Oil
Refrigerant oil mixes with the refrigerant (about 20 - 40%, depending on compressor type and amount of refrigerant) and circulates constantly in the system, lubricating the moving parts. Special synthetic refrigerant oils, for example, ...

Engine Cooling
Because towing places higher demands on the engine cooling system, the cooling system is enhanced in vehicles that have factory-installed trailer hitches, if necessary. This is done by installing a stronger or a second coolant fan and/or a larger radiato ...