Ontario MTO Truck Knowledge Practice Test 2025 – The Comprehensive All-in-One Guide to Exam Success!

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Question: 1 / 400

You should not activate the differential lock when the wheels are actually spinning. True or False?

True

The correct answer is true. Activating the differential lock while the wheels are spinning can lead to significant mechanical damage to your vehicle's drivetrain. The purpose of a differential lock is to allow the wheels to turn at the same speed, which enhances traction in slippery conditions. However, if the wheels are spinning, engaging the lock can cause excessive stress on the components since it does not allow the wheels to slip when needed, potentially leading to breakdowns or malfunctions.

In summary, engaging the differential lock should be done when the vehicle is stationary or when the wheels are experiencing some slippage, rather than during active wheel spinning. This practice ensures safe and efficient operation of the vehicle under different driving conditions.

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False

Sometimes true, sometimes false

Depends on the weather

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