Troubleshooting: Caliper Piston Sticking

Problem

Brake pad noise, excessive pad wear

caliper

Likely Cause

  • Caliper piston is sticking
  • Caliper piston is rusted due to water and corrosive chemicals exposure
  • Caliper piston seal is damaged due to heat and friction

Solutions

  • Check piston for rust and replace if necessary
  • Check piston seal for damage, replace if necessary
  • Apply rubber grease on a piston seal
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