Over time a ridge will form on the outer edge of the brake shoes. This is normal and does not
affect brake shoe serviceability.
(3) Inspect rear brake shoes for OUT-OF-SERVICE and IN-SERVICE criteria as shown in Figure 11-2. Rear Brake
Shoe Service Criteria.
Figure 11-2. Rear Brake Shoe Service Criteria
Cracks or voids that exceed 1/16 in. in width.
Cracks that exceed 1-1/2 in. in length.
Vertical or horizontal cracks in lining edge not
exceeding 1/16 in. in width or not exceeding 1-1/2 in.
Portion of lining missing that exposes a fastening
Corner segment missing with no fastening device
(rivet or bolt) exposed.
Cracks across the lining face that extend through the
Surface cracks in lining face that can extend from
hole to hole.
Pitting and material erosion on the lining face.