First, one has to pull out the IP insulator, in order to replace the air temperature actuator. Next, you have to disconnect the electrical connection from air temperature actuator and pull out retaining screws for the actuator. After the actuator is removed, install the new air temperature actuator paying attention to the Fastener Notice according to the Service Precautions on the right manner of installation. Fasten the actuator with the retaining screws, making sure that they are screwed to the value of 1.6 N.m (14 lb in). Then reconnect the elettrical connector back to the air ttemperature actuator and lastly reinstall IP insulator.