Disc Brake System: Testing and Inspection

When diagnosing the front brakes:
1. Inspect the front disc brake caliper and caliper mounting for loose or damaged parts. Make sure the brake caliper bolts are tightened to 23-34 Nm (18-25 ft. lbs.).





2. Check the front brake hose and front disc brake caliper fitting for leaks or damage.
3. Check the front disc brake caliper closely for wet areas that might indicate a leaking seal.
4. Carefully measure front disc brake rotor thickness, parallelism, and runout.
5. Resurface recondition or replace the front disc brake rota; as necessary. A visual inspection will not determine the required service unless the damage is obvious.
6. Check for brake fluid contamination when inspecting the brake pads and linings. Contamination may indicate a leaking piston seal assembly. If a piston seal assembly is leaking, disassemble and inspect the front disc brake caliper.
7. Check for even wear from side to side. If the set of brake pads and linings on one side of the vehicle is excessively worn, the piston may be seized in the bore. If a seized piston is suspected, disassemble and inspect the front disc brake caliper.