What should I do if the wiper arm makes noise or shakes?

Treatment Plans for Noise or Shaking of Wiper Arms

Common Causes of Noise or Shaking
1. Arm Rod Misalignment: A misaligned arm rod can lead to poor contact between the wiper and the glass, resulting in abnormal noises and shaking.
2. Inappropriate Size or Aging of Wiper Blades: Mismatched or aged wiper blades may cause the wipers to jump and produce noise during operation.
3. Loose Bolts or Insufficient Torque: If the fixing bolts are not tightened properly, the wiper arm will shake during movement.
4. Worn or Poorly Lubricated Connecting Bearings: Worn bearings or lack of lubrication can make the rotation unsmooth and generate noise.

Inspection and Diagnosis Steps
1. Visual Inspection of the Arm Rod: Observe whether the arm rod is straight and if there is any obvious bending.
2. Check the Tightness of Bolts: Use a wrench to check the tightness of the fixing bolts of the wiper arm to ensure they are not loose.
3. Inspect the Contact between the Blade and the Glass: Confirm whether the size of the wiper blade meets the requirements of the vehicle model and if there are any aging cracks.
4. Manually Shake to Check the Bearing: Manually shake the wiper arm to feel if there is any jamming or abnormal looseness.

Solutions and Repair Methods
1. Adjust or Replace the Misaligned Arm Rod: Realign the misaligned arm rod or directly replace it with a compliant Wiper Arm to restore proper contact.
2. Replace the Wiper Blades with the Right Specifications: Select wiper blades that match the vehicle, ensuring accurate size and durable material.
3. Retighten or Replace the Bolts: Retighten the bolts with the appropriate torque. Replace the bolts with new ones if necessary to prevent loosening.
4. Clean, Lubricate or Replace the Bearings: Clean the bearings and apply special lubricating oil. Replace the bearings with new ones if they are severely worn.