Wiper motor replacement method: 1. Remove the screws attached to the motor flange. Remove the spindle motor. Remove the cover screw and remove the upper cover. Remove the screw of the screw seat; 2. Remove the connecting screw between the nut bracket and the main sleeve. Remove the spindle assembly and remove the flange at the front of the spindle assembly. Remove the spindle sleeve and round nut; 3. Lift the wiper arm and carefully observe the joint between the wiper blade and the wiper arm (inside the wiper blade). There is a clip that can be pressed down. Hold the clip by hand, push down the wiper blade and remove it directly.