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Heavy Duty Equipment Technician Red Seal Exam Prep · Question

A heavy-duty articulated dump truck requires maximum traction on a steep, slippery muddy slope. Which power train component, when engaged, will provide the most benefit in this situation?

Engaging the differential lock forces both wheels on an axle to turn at the same speed, preventing power from being lost to a slipping wheel and maximizing trac

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Question: A heavy-duty articulated dump truck requires maximum traction on a steep, slippery muddy slope. Which power train component, when engaged, will provide the most benefit in this situation?

Answer options: ✅ Differential lock

  • Torque converter lock-up clutch
  • Auxiliary brake retarder
  • Limited-slip differential

Correct answer: Differential lock

Explanation: Engaging the differential lock forces both wheels on an axle to turn at the same speed, preventing power from being lost to a slipping wheel and maximizing traction, which is crucial on slippery terrain.

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