Disc Brake System: Testing and Inspection

Remove wheels and inspect brake rotor, caliper and linings. The wheel bearings should be inspected at this time and repacked if necessary. Do not get any grease on the linings.

On rear wheel drive models, the brake shoe and lining assemblies should be replaced if the lining is worn to within 1/32 inch of rivet heads (riveted linings) or brake shoe (bonded linings). On front wheel drive models, the brake shoe and lining assemblies should be replaced when the combined thickness of the shoe and lining is 5/16 inch or less. It is recommended that both front and/or rear wheel sets be replaced whenever a respective shoe and lining assembly is replaced.

If a visual inspection does not adequately determine the condition of the linings, the brake shoe and lining assemblies should be removed and inspected. If shoes do not require replacement, reinstall in original positions. Brake shoes and linings should also be replaced if cracked or damaged.

If the caliper is cracked or fluid leakage through the casting (porosity) is evident, the caliper must be replaced.