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 disk.
Standard inside diameter: 210 mm (8.27 in.)
Maximum inside diameter: 211 mm (8.30 in.)





2. INSPECT PARKING BRAKE SHOE LINING THICKNESS
(a) Using a ruler, measure the thickness of the shoe lining.
Standard inside diameter: 4.0 mm (0.158 in.)
Maximum inside diameter: 1.0 mm (0.039 in.)
If the lining thickness is at the minimum thickness or less, or if there is severe or uneven wear, replace the brake shoe.





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, repair it using a brake shoe grinder or replace the brake shoe assembly.