Possible Causes

  1. Worn lining material (pads / shoes)
  2. Wrong lining material (pads / shoes)
  3. Improper rotor finish
  4. Lack of lubrication
  5. Worn out hardware

Possible Solutions

  1. Replace lining with manufacturer's recommendations
  2. Replace or re-finish rotor
  3. Lubricate all rubber components with silicone grease and lubricate all metal-to-metal contacts with moly lube
  4. Replace hardware