Remove the deflectors on the driver and front passenger sides. Unscrew the fixing screws of the switching unit from the central tubular frame and leave the switching unit in the pipe for the time being. Remove steering column from center tube. Disconnect the electrical wiring clamps and ground connections from the central tubular frame. Loosen the screws securing the fan and heater. Remove the arms and wiper motor. Remove the plenum box cover. Loosen screw -1- in plenum chamber on driver's side (20 Nm).
Press out groove pins -2-. Take out the rivets. Remove adapter -3-. Remove air duct -1-. Loosen nuts -3- (20 Nm). Remove screw -4- (20 Nm).
Pull out center tube -2-. In doing so, disconnect the switching unit from it.
Installation
Installation in reverse order.
Note: Before installation, check all fastening elements for damage and replace if necessary.