PARKING BRAKE ASSEMBLY INSPECTION


  1. INSPECT PARKING BRAKE DRUM SUB-ASSEMBLY


    1. A01CGO9

      Using a brake drum gauge or equivalent, measure the inside diameter of the drum.

      Standard inside diameter
      190.0 mm (7.480 in.)
      Maximum inside diameter
      191.0 mm (7.520 in.)

      If the drum is scored or worn, the brake drum may be lathed to the maximum inside diameter.

  2. INSPECT PARKING BRAKE SHOE LINING THICKNESS


    1. A01CI8N

      Using vernier calipers, measure the shoe lining thickness.

      Standard thickness
      4.0 mm (0.157 in.)
      Minimum thickness
      1.0 mm (0.039 in.)

      If the shoe lining thickness is less than the minimum or shows signs of uneven wear, replace the brake shoes.

      Tech Tips

      If any of the brake shoes need replacing, replace all of the parking brake shoes in order to maintain an even braking effect.

  3. INSPECT BRAKE DRUM AND PARKING BRAKE SHOE LINING FOR PROPER CONTACT


    1. A01CIBV

      Apply some chalk to the inside of the brake drum, and rub the drum and the shoe together.

      Standard
      There should be no defective contact

      If the contact between the brake lining and drum is improper, repair the drum with a brake shoe grinder, or replace the brake shoe assembly.