Hermetically seal with -AMV 176 000 05- the surface between the additional resistor for the fresh air blower -1- and air duct, before mounting.
Dismount and installation of the tube for the vacuum line
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The tube for the vacuum line -2- should be placed when mounting a new heat exchanger -1- in the vehicle with fresh air and air recirculation for or in the vehicle with air conditioning
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Renew the gasket -3-
Removal and installation of the central flap lever