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Scoring on drum brakes is typically measured by visually inspecting the brake drum's inner surface for grooves, scratches, or uneven wear. A micrometer or caliper can be used to check the drum's diameter against manufacturer specifications, ensuring it hasn't exceeded allowable limits. Additionally, measuring the depth of any grooves can help assess the severity of scoring, which may require resurfacing or replacement of the drum. Regular inspections and maintenance are vital to ensure optimal braking performance.

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1d ago

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