Manitoba Airbrake Practice Exam

For the brakes to function correctly, should the brake-shoe lining be greased?

1. Yes, always

2. No, never

3. Yes, but only lightly

4. Yes, but only in wet conditions

The correct answer is: No, never

The other options are incorrect for various reasons A. Greasing the brake-shoe lining can actually decrease its effectiveness by creating a slippery surface that reduces friction, making it harder for the brakes to grip the wheels. This can lead to longer stopping distances and potentially dangerous situations. C. While some older brake systems may recommend light greasing, modern brake systems are designed to function best without any grease applied to the brake-shoe lining. Applying even a small amount of grease can negatively affect the brakes' performance. D. Only greasing in wet conditions might seem logical, as it could help prevent rust and corrosion. However, this is not necessary as modern brake materials are specifically designed to resist rust and last longer without greasing. Additionally, greasing in wet conditions can still damage the brake-shoe lining's effectiveness. Therefore, the best option is to never grease the brake-shoe lining