A6 Quattro Sedan V6-2.8L (AHA) (1998)
A/C Coupler O-ring: Description and Operation
O-rings seal the connections between components of the A/C system.
Use only O-rings which are compatible with R-134a refrigerant and refrigerant (PAG) oil. Refer to the most recent parts information when obtaining new
O-rings. O-rings are recognized by colors (currently red, green or violet).
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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Always use correct size O-rings (dimensions -a- and -b-).
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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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O-ring and torque specifications also apply to the threaded connections in the A/C lines.