PARKING BRAKE ASSEMBLY INSPECTION

PROCEDURE

  1. CHECK BRAKE DISC INSIDE DIAMETER

    1. F006409

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

      Standard inside diameter

      180 mm (7.08 in.)

      Maximum inside diameter

      181 mm (7.12 in.)

      If the inside diameter of the disc is more than the maximum, replace the disc.

  2. CHECK PARKING BRAKE SHOE LINING THICKNESS

    1. C206735

      Using a ruler, measure the thickness of the shoe lining.

      Standard thickness

      3.1 mm (0.122 in.)

      Minimum thickness

      1.5 mm (0.0591 in.)

      If the lining thickness is less than the minimum, or if severe or uneven wear is present, replace the shoe.

  3. CHECK BRAKE DISC AND PARKING BRAKE SHOE LINING FOR PROPER CONTACT

    1. C117766

      Apply chalk to the inside surface of the disc. Rub the brake shoe lining against the disc and check that full contact is achieved between the brake shoe and disc (chalk is transferred to the entire brake shoe lining).

      If the disc and brake shoe lining do not have full contact, use a brake shoe grinder or replace the brake shoe.

    2. After the inspection, wipe the chalk off of the inside surface of the disc and the lining surface.