A6 Quattro Sedan V6-3.0L (AVK) (2002)
A/C Coupler O-ring: Service and Repair
NOTES:
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Use O-rings only once and always replace.
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Handle the O-rings only in a clean working environment.
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Lubricate the O-rings with refrigerant (PAG) oil before installing.
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Always make sure to properly install the O-rings on line/component mounting flanges/grooves.
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Use only O-rings that are resistant to refrigerant R134a and refrigerant oil. These O-rings are color-coded to avoid confusion (currently red, light
purple and dark purple).
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In addition to the color-coded O-rings, black O-rings are also used in production for certain connections.
Dimensions -a- and -b- vary depending on the installation location.