User's Manual
11
BRAKE SYSTEMS DIAGNOSTIC GUIDE
POTENTIAL CONDITION/CAUSE ACTION (SERVICE MANUAL SECTION)
Dragging brakes See DRAGGING BRAKES
Check brake adjustment
Grabbing or pulling brakes:
• Grease, oil or dirt on linings Replace linings (5)
• Glazed linings Deglaze linings or replace (5)
• Cam bracket seal failure Replace seals (5)
• Brake linings not a balanced set, different codes, or lining brand Replace linings (5)
• Loose or broken linings Replace linings (5)
• Brake drum out-of-round Replace drum (3,6)
• Defective brake drum Replace drum (3,6)
• Camshaft binding at one or more wheels Clean and lubricate (2,3)
• Defective slack adjuster Replace slack adjuster (3,6)
• Uneven brake adjustment (side-to-side) Adjust brakes (2)
• Broken or bent part(s) Replace part(s)(6)
• Loose spider or drum mounting bolts Retorque bolts (6)
• Different air chamber size or slack adjuster length (side-to-side) Use same size air chamber and slack adjuster length
on all brakes
VEHICLE PULLS/
CRACKED DRUMS