To remove the wiper arm/blade assembly, pull it away from the windshield glass against the tension of the wiper arm spring. Next, depress the small tab located just below the wiper arm at the blade connector socket and pull the blade from the arm. In some models, a coil spring blade retainer is used; to remove the blade in this case, insert a screwdriver on top of the spring and push downwards. For installation, reverse the removal process, ensuring that the connector is fully pushed onto the arm so that the small locating 'pip' is secure in the hole in the connector.