How to adjust the abnormal sound of wiper?

How to adjust the abnormal sound of the wiper: 1. Most wipers are very smooth at the beginning of use. Generally, different problems will appear after three or four months. Among them, the accumulation of stains on the wiper is a major reason for the abnormal sound of the wiper. Removing foreign bodies and stains is the fastest solution; 2. The wiper blade is uneven. Wipers commonly used in rainy days may cause deformation of wiper blades. Observe the direction of the wiper blade. Adjust the direction so that the wiper blade and wiper stick to the front windshield; 3. There are residual oil stains or grease on the glass. Parking your car under a tree for too long may leave oil stains on the glass. Causing the wiper to make abnormal sound. Wash and remove with detergent or toothpaste. Can be solved quickly; 4, wiper aging hardening. Long-term weather will cause the wiper to harden and age. This problem requires replacing the wiper to solve the fundamental problem. If it is not replaced for a long time, it is easy to damage the glass.