CAUSES OF BRAKE NOISE

 

Below are some of the most common causes of brake noise:

 

• Poor lining-to-drum contact

• Imbalanced braking condition

• The type and condition of suspension system

• Brake drum design & weight

• The condition of brake component parts

• Brake design

• High friction materials used in light-duty applications

• Linings contaminated with oil

• Over adjustments of component parts

• S-cams rotating reverse of wheel rotation

• Shoes and lining rubbing drum wall

• Linings loose on shoe

• Camshaft bushings worn or need lubrication

• Flat spots on cams or rollers

• Brake chamber clevis pins worn or bent

• Push rod and slack adjuster not aligned

• Out of round drum

• Automatic slack adjuster not set up properly (All slack adjusters must be reset after each brake reline or new installation, with proper template)