During a pre trip inspection, which statement about brake shoes is true?

During a pre trip inspection, which statement about brake shoes is true?

• A. They may have oil on them
• B. They should not have oil, grease, or fluid on them
• C. They should be hot to the touch
• D. They can be greasy if new

Answer: (B)

During a pre-trip inspection, the brake shoes should be clean and dry. The friction surface needs to grip the drum properly, and any oil, grease, or other fluid on the shoes creates a slick surface that greatly reduces braking effectiveness and can lead to brake failure. Oil can come from leaks in nearby components or the hydraulic system, and contaminated shoes won’t bite the drum reliably. That’s why the true statement is that brake shoes should not have oil, grease, or fluid on them. The other ideas don’t fit: brake shoes should not be hot to the touch during a pre-trip, and new brakes should not be greasy on the friction surface—they should be clean and dry.

During a pre-trip inspection, the brake shoes should be clean and dry. The friction surface needs to grip the drum properly, and any oil, grease, or other fluid on the shoes creates a slick surface that greatly reduces braking effectiveness and can lead to brake failure. Oil can come from leaks in nearby components or the hydraulic system, and contaminated shoes won’t bite the drum reliably. That’s why the true statement is that brake shoes should not have oil, grease, or fluid on them. The other ideas don’t fit: brake shoes should not be hot to the touch during a pre-trip, and new brakes should not be greasy on the friction surface—they should be clean and dry.