Maximum Diameter/Discard Diameter

Brake Drums
Maximum Re-bore Diameter 226.30 mm (8.909 inch)
Discard Diameter 226.57 mm (8.920 inch)
Inside Diameter 225.12 mm (8.863 inch)
Maximum Lateral Runout 0.15 mm (0.006 inch)

All brake drums have a discard dimension cast into them. This is a wear dimension and not a refinish dimension. Replace any drum which does not meet the specification.