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International Automotive Technicians Network
Re: Brake Drum Tolerance
Posted to HD/Fleet Forum on 7/1/2019

A drum could show eccentricity multiple ways. If the "bore" is out of round, it's not round. If the bore has it's center on a line that is not perpendicular to the mounting surface, it will be round, but eccentric. Or if the bore is square and true to the moun... Login to read more.