Ontario Class A Practice Test · Question
What is the purpose of inspecting brake drums and shoes before descending a long, steep grade?
Before a steep descent, it's crucial to inspect brake drums and shoes to ensure they are free from contaminants like grease or oil, and that the brake lining ha
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Question: What is the purpose of inspecting brake drums and shoes before descending a long, steep grade?
Answer options:
- To adjust the air pressure in the brake lines. ✅ To ensure they are not contaminated with grease or oil and have sufficient lining thickness.
- To verify they are properly lubricated for smooth operation.
- To increase the braking force by over-tightening the slack adjusters.
Correct answer: To ensure they are not contaminated with grease or oil and have sufficient lining thickness.
Explanation: Before a steep descent, it's crucial to inspect brake drums and shoes to ensure they are free from contaminants like grease or oil, and that the brake lining has sufficient thickness. Contamination or thin linings will severely reduce braking effectiveness and increase the risk of fade.
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