A4 Quattro Cabriolet L4-2.0L Turbo (BWT) (2009)
13 - Evaporator
14 - Service Connection
‹› Low pressure side
‹› Used for measuring and discharging by A/C system service point workshops
15 - Cap
‹› With seal
‹› Always screw on
16 - Reservoir
Refrigerant Circuit O-Ring Seals
‹› Only to be used once; always replace.
‹› Lightly moisten with refrigerant oil before fitting.
‹› Pay attention to correct positioning on pipe/in groove.
‹› Ensure cleanliness when working.
‹› Install only O-rings that are resistant to refrigerant R134a and corresponding refrigerant oil. These O-rings are color-coded to avoid mistakes
(currently " red", "light purple" and "dark purple").
‹› In addition to the color-coded O-ring seals, use is also made at the factory of black O-ring seals for certain connections.
‹› The O-ring dimensions - a - and - b - are different depending on installation location.
‹› In January 2003, the connections from the refrigerant lines to various components (condenser, evaporator, etc.) were changed from a radial/axial
seal to a radial seal. Only components with the same type of seal and the provided O-ring seals (various versions) may be installed together. If
components with different seals are installed, the connection points cannot be sealed.