Before replacing the Wiper Arm you should label the
Wiper Blade position with tape over the windshield then remove the washer hose. Start by removing the protective cover from the Wiper Arm and then untighten the nut. Continue attempting removal with a battery terminal puller when rocking the Wiper Arm does not sufficiently loosen
Drive Shaft connections. After the Drive Shaft becomes loose remove the Wiper Arm from its place then clean each knurl on the shaft with a wire brush. Insert the Wiper Arm at the point where the marked windshield position is visible before screwing it onto the Drive Shaft. Secure the Drive Shaft nut by applying 25 n.m (18 lb ft) torque force. Complete the installation by placing the cover onto the nut then attach the washer hose and wipe the windshield marks clean. Test the operation of the wiper system to verify it functions correctly.