Heater Core, Removing And Installing: Notes

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Special Tools And Workshop Equipment Required

Cooling System Tester:VAG1274B (and corresponding adapters)
Hose Clamps - Up To 25mm:3094 or Hose Clamps - Up To 40mm:3093
Commercial compressed-air gun with rubber end piece

NOTE:

Due to space limitation when the instrument panel is installed, it is not possible to install the factory-installed heat exchanger and clamps -B and C- again. If a factory installed heat exchanger (Original part) must be installed again, remove the instrument panel and the air guide leading to the "Defrost" vent. Coat the O-ring lightly with coolant (as described for installing a replacement heat exchanger) on the coolant pipes -D and E- and then push the coolant pipes -D and E- (with the O-ring) from the top into the connections in the heat exchanger -A-. Hold the coolant pipes -D and E- in the heat exchanger and install the clips -B and C-. Further assembly is performed as described for installing a replacement part - heat exchanger.

Fig 1: Check A/C Unit And Evaporator With Heat Exchanger Removed

Courtesy of AUDI OF AMERICA, LLC