What would cause brake pedal pulsations on a heavy-duty hydraulic brake system?
Understand the Problem
The question is asking what causes brake pedal pulsations in a heavy-duty hydraulic brake system, specifically looking for factors related to the brake drum.
Answer
An out-of-round brake drum.
The final answer is D) An out-of-round brake drum.
Answer for screen readers
The final answer is D) An out-of-round brake drum.
More Information
Out-of-round brake drums can cause uneven contact with the brake shoes, leading to the pulsations felt in the brake pedal.
Tips
A common mistake is not realizing that minor drum distortions can significantly impact braking performance and cause pulsation.
Sources
- What causes your brake pedal to pulse, and how do you fix - Quora - carcare.quora.com
- Brake Rotor runout and causes - Brake and Frontend - brakeandfrontend.com
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