Hitachi Excavator Accessories 4650571 Wiper Arm

4650571 is an important component of the front windshield wiper system of Hitachi excavator cab - wiper arm. It is installed on the output shaft of the wiper motor, and the wiper blade is tightly pressed against the glass surface by the pre tensioning force of the spring. When the motor rotates, it drives the wiper arm to swing left and right, completing the wiping action. Main functions: 1. Fix and drive the wiper blades. 2. Ensure appropriate adhesion pressure between the wiper blades and the glass. 3. Maintain clear visibility in harsh working conditions such as rainy days and dust, and ensure safe operation. Common faults include: 1. Deformation or breakage of the wiper arm. 2. Spring failure, resulting in loose and loose wiper blades. 3. Wear and looseness of the installation holes, resulting in abnormal noise or inadequate brushing. 4. Severe surface rust