TROUBLESHOOTING (Cont'd) Problem | Possible cause | Remedy | Page Snapping or clicking noise when brakes are applied | Loose or missing pad support plate | Replace pad support plate | BR-23, 31 | Loose installation bolt | Tighten | BR-23, 31 | Wear on slide bushing | Replace slide bushing | BR-26, 34 Scraping or grinding noise when brakes are applied | Worn brake linings or pads | Replace or refinish rotors if heavily scored | BR-26, 39 | Caliper to wheel or rotor interference | Replace as required | BR-26, 34 | Dust cover to rotor interference | Correct or replace | BR-26, 39 | Other brake system components faulty | Repair or replace as necessary | | Tires rubbing against chassis and/or body | Repair as necessary | Squeaking, squealing, groaning or chattering noise when brakes are applied | Rotors and pads worn or scored | Inspect, repair or replace | BR-26, 34 | Dirty, greased, contaminated or glazed linings or pads | Clean or replace | | Improper linings or pads using | Inspect for correct usage or replace | Note: Brake friction materials inherently generate noise and heat in order to dissipate energy. As a result, occasional squeal is normal and expected under severe environmental conditions such as cold, heat, wetness, snow, salt, mud, etc. This occasional squeal is not a functional problem and does not indicate any loss of brake effectiveness | Mal adjustment of brake pedal or booster push rod (Disc brake) | Inspect and adjust | BR-5, 21 | Missing or damaged brake pad anti-squeal shim | Replace | BR-23, 31 | Past wear and pad wear indicator making contact with the rotor | Replace | BR-23, 31 | Burred or rusted calipers (Drum brake) | Clean or deburr | BR-26, 34 | Weak damaged or incorrect shoe hold down springs, loose or damaged shoe hold down spring pins and springs and grooved backing plate ledges | Inspect, repair or replace |