Heavy Duty Equipment Technician Red Seal Exam Prep · Question
A heavy-duty truck equipped with a manual transmission exhibits difficulty engaging gears, particularly when stationary, and a strong burning smell is occasionally detected from the bell housing area. The clutch pedal free play is within manufacturer's specifications. What is the most likely cause of these symptoms?
Worn clutch disc facing, indicated by difficulty engaging gears and a burning smell, suggests the clutch is slipping. A failed release bearing would typically c
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Question: A heavy-duty truck equipped with a manual transmission exhibits difficulty engaging gears, particularly when stationary, and a strong burning smell is occasionally detected from the bell housing area. The clutch pedal free play is within manufacturer's specifications. What is the most likely cause of these symptoms?
Answer options: ✅ Worn clutch disc facing
- Failed clutch release bearing
- Seized pilot bearing
- Broken clutch master cylinder pushrod
Correct answer: Worn clutch disc facing
Explanation: Worn clutch disc facing, indicated by difficulty engaging gears and a burning smell, suggests the clutch is slipping. A failed release bearing would typically cause noise, a seized pilot bearing might prevent the input shaft from slowing down properly, and a broken master cylinder pushrod would affect pedal engagement, not necessarily cause a burning smell or slipping.
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