Heavy Duty Equipment Technician Red Seal Exam Prep · Question
During an inspection, a technician observes excessive backlash and noise from a final drive assembly. What is a common cause for these symptoms in a planetary final drive?
In a planetary final drive, wear in the sun gear or planet gears, along with their bearings or shafts, will increase clearances and lead to excessive backlash a
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Question: During an inspection, a technician observes excessive backlash and noise from a final drive assembly. What is a common cause for these symptoms in a planetary final drive?
Answer options: ✅ Worn sun gear or planet gears
- Over-tightened wheel bearings
- Incorrect tire pressure
- Insufficient brake pad material
Correct answer: Worn sun gear or planet gears
Explanation: In a planetary final drive, wear in the sun gear or planet gears, along with their bearings or shafts, will increase clearances and lead to excessive backlash and noise.
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