REAR BRAKE SHOE, WHEEL CYLINDER & BRAKE DRUM (for TMC Made): Inspection

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

Standard inside diameter: 200.0 mm (7.874 in.) 

Maximum inside diameter: 201.0 mm (7.913 in.) 

Fig 1: Measuring Inside Diameter Of Brake Drum

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard thickness: 4.4 mm (0.173 in.) 

   Minimum thickness: 1.0 mm (0.039 in.) 

   If the lining thickness is at the minimum thickness or less, or if there is severe, uneven wear, replace the brake shoe.

   Fig 2: Measuring Thickness Of Shoe Lining

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Apply chalk to the inside surface of the drum, then grind drum on the brake shoe lining to fit.

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

   Fig 3: Applying Chalk To Inside Surface Of Drum

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check the cylinder bore and piston for rust or scoring.

   If necessary, replace the brake wheel cylinder assembly.