AL Conveying Practice Questions - Alabama Conveying Contractor Examination Exam

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Conveyor idler and pillow-block bolts repeatedly loosen from vibration. Which fastening approach best addresses the cause?

Replace them with the next larger diameter bolt in the same hole Use a prevailing-torque or other approved locking system and tighten to the specified value, and verify the joint is not simply undersized or loose-fitting Tack weld every nut to the bolt Apply grease to the threads so the nut turns more freely

Correct Answer:

Use a prevailing-torque or other approved locking system and tighten to the specified value, and verify the joint is not simply undersized or loose-fitting

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