Component Tests and General Diagnostics

INSPECTION





1. INSPECT BRAKE DISC INSIDE DIAMETER
(a) Using a brake drum gauge or equivalent, measure the inside diameter of the disc.
Standard inside diameter: 173 mm (6.81 in.)
Maximum inside diameter: 174 mm (6.85 in.)





2. INSPECT PARKING BRAKE SHOE LINING THICKNESS
(a) Using a ruler, measure the thickness of the shoe lining.
Standard thickness: 3.5 mm (0.138 in.)
Minimum thickness: 1.0 mm (0.039 in.)





3. INSPECT BRAKE DISC AND PARKING BRAKE SHOE LINING FOR PROPER CONTACT
(a) Apply chalk to the inside surface of the disc, then grind down the brake shoe lining to fit.
If the contact between the brake disc and the shoe lining is improper, correct it using a brake shoe grinder or replace the brake shoe assembly.