TM 9-2320-366-20-4
11-2. FRONT BRAKE SHOES REPLACEMENT/ADJUSTMENT (CONT)
NOTE
Over time a ridge will form on the outer edge of the brake shoes. This is normal and does not affect
brake shoe serviceability.
It is normal for the leading edge of the front brake shoes to wear faster than the remaining area of the
lining.
(3) Inspect brake shoes for OUT-OF-SERVICE and IN-SERVICE criteria as shown in Figure 11-1. Front Brake Shoe
Service Criteria.
OUT-OF-SERVICE
IN-SERVICE
Cracks or voids that exceed 1/16 in. in width.
Vertical or horizontal cracks in lining edge not exceeding
1/16 in. in width or not exceeding 1-1/2 in. in length.
Cracks that exceed 1-1/2 in. in length.
Portion of lining missing that exposes a fastening device,
Corner segment missing with no fastening device (rivet or
or worn to the point that a fastening device is exposed.
bolt) exposed.
Cracks across the lining face that extend through the lining
Surface cracks in lining face that can extend from hole to
edges.
hole.
Pitting and material erosion on the lining face.
