Brake Drum: Testing and Inspection

BRAKE DRUM INSIDE DIAMETER CHECK
1. Remove the brake drum.





2. Measure the inside diameter of the brake drum at two or more locations.
Standard value: 228.6 mm (9.00 inches)
Limit: 230.6 mm (9.08 inches)
3. Replace the brake drums, shoe and lining assembly when wear exceeds the limit value or is badly imbalanced.