Heavy Duty Equipment Technician Red Seal Exam Prep · Question
A tandem drive construction machine experiences a loud 'clunking' noise coming from the rear axle whenever the machine changes direction (forward to reverse or vice-versa). What component is the most likely source of this noise?
A loud 'clunking' when changing direction is a classic symptom of excessive backlash or wear in the differential spider gears and their cross shaft. As the torq
Start free practice for Heavy Duty Equipment Technician Red Seal Exam Prep
300 questions · no signup required · 40 free questions per day
Question: A tandem drive construction machine experiences a loud 'clunking' noise coming from the rear axle whenever the machine changes direction (forward to reverse or vice-versa). What component is the most likely source of this noise?
Answer options:
- Worn planetary gears in the final drive
- Spalling on the ring and pinion gear teeth ✅ Worn spider gears/cross shaft in the differential carrier
- A broken axle shaft
Correct answer: Worn spider gears/cross shaft in the differential carrier
Explanation: A loud 'clunking' when changing direction is a classic symptom of excessive backlash or wear in the differential spider gears and their cross shaft. As the torque reverses direction, the slack in these worn components takes up, creating the metallic clunk. Worn planetary gears in the final drive would likely cause noise under constant load. Spalling on ring and pinion gears or a broken axle shaft would cause more continuous noise, grinding, or complete loss of drive.
Start free practice for Heavy Duty Equipment Technician Red Seal Exam Prep
300 questions · no signup required · 40 free questions per day
More about Heavy Duty Equipment Technician Red Seal Exam Prep
Related Questions
- What is the primary purpose of a 'lock-up clutch' in a modern heavy-duty torque converter?
- A technician is performing a visual inspection of a heavy-duty truck's air brake system. Which of the followin
- During a pre-trip inspection of an air-braked commercial vehicle, the operator observes a sudden drop in air p
- A technician is preparing to lift a heavy engine component using a shop crane. The component's manufacturer sp
- A technician has completed a repair on a hydraulic cylinder on a piece of articulated equipment. Before connec
- A technician is installing a new final drive assembly on an excavator. The assembly weighs approximately 250 k
More for Heavy Duty Equipment Technician Red Seal Exam Prep candidates
FAQs
Question explanations
- What is the primary purpose of a 'lock-up clutch' in a modern heavy-duty torque converter?
- A technician is performing a visual inspection of a heavy-duty truck's air brake system. Which of the followin
- During a pre-trip inspection of an air-braked commercial vehicle, the operator observes a sudden drop in air p
- A technician is preparing to lift a heavy engine component using a shop crane. The component's manufacturer sp
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Heavy Duty Equipment Technician Red Seal Exam Prep Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.