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Question:

According to federal regulations on air brakes, the brake linings of drum brakes must be at least _______ thick.

A 1/4 inch

explanation

A peace officer may place your vehicle out of service if drum brake linings are less than 1/4 inch (6.4 mm) thick or air disc brake pads are less than 1/8 inch (3.2 mm) thick. [Driving Commercial Vehicles Manual]

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4 years ago

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4 years ago

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4 years ago

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