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Combination Braking, Skids & Jackknife Prevention

If your tractor's drive wheels lock during braking and the tractor begins to jackknife, what is the basic recovery?

  • A.Turn the steering wheel hard against the direction of the skid
  • B.Apply more brake so all wheels lock together evenly
  • C.Set the parking brake immediately to lock everything at once
  • D.Release the brakes, steer straight (or gently toward where you want to go) and let the drive wheels roll again, avoiding sudden clutch or throttle changes
Correct answer

D. Release the brakes, steer straight (or gently toward where you want to go) and let the drive wheels roll again, avoiding sudden clutch or throttle changes

Why

Like any skid, a drive-wheel skid ends when the wheels roll and regain grip. Releasing the brakes and steering calmly gives the tractor a chance to straighten before the trailer pushes it fully around.

Manual topic: Combination Vehicles - Skids and Jackknifing · From the Combination Vehicles practice bank (CV-141).

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