Touareg V6-3.2L (BMX) (2005)
Evaporator
Liquid refrigerant entering the evaporator absorbs heat from air passing through the evaporator fins and cools the air. As the refrigerant absorbs heat it
turns to vapor and then is sectioned by the compressor.
O-rings
O-rings seal connections between A/C system components.
NOTE:
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Always use correct size O-rings (dimensions -a- and -b-).
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Do not reuse O-rings, always replace. Use only new O-rings that are compatible with R-134a refrigerant and refrigerant (PAG) oil on R-134a
systems.
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O-rings for use only on R-134a systems may be red, green, violet or black.
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Lubricate O-rings with the appropriate refrigerant oil before installing (only use PAG oil).
Pressure relief valve
The pressure relief valve -1- is integrated with the compressor. At pressures above 40 bar (580 psi), the pressure relief valve opens to relieve excessive
outlet pressure. When the system pressure is reduced, the valve closes to prevent total refrigerant loss.
Evidence of refrigerant oil in the area of the relief valve indicates valve has operated.