Why does the new windshield wiper make a squeaking noise when wiping the glass?

[ErinFitz]

New windshield wipers usually squeak due to improper installation of the wiper blade support frame (not parallel to the windshield). Here is some information about windshield wipers: 1. Definition: A windshield wiper is a blade structure installed in front of the windshield, composed of a motor, reducer, four-bar linkage, wiper arm spindle, and wiper blade assembly. 2. Function: Its main purpose is to remove rain, snow, and dust that obstruct the view on the windshield. 3. Principle: The power source of the wiper comes from the motor, which is the core of the entire wiper system. The quality requirements for the wiper motor are quite high. It uses a DC permanent magnet motor, and the wiper motor installed on the front windshield is generally integrated with the worm gear mechanical part.