Operation CHARM: Car repair manuals for everyone.

Brake Drum

Rear Drum Specifications

11" Rear Drum

Nominal Diameter 11.030"

Maximum Machine Limit 11.090"

Discard Diameter *

Runout Limit 0.008"

12" Rear Drum

Nominal Diameter 12.125"

Maximum Machine Limit 12.185"

Discard Diameter *

Runout Limit 0.008"


* - Discard when diameter is greater than Maximum Machine