USN Road Grader Practice Exam 2025 – Complete Study Guide

Question: 1 / 400

When should a grader tooth be replaced?

1/2" from the shank

3/4" from the shank

A grader tooth should typically be replaced when it has worn down to a depth of approximately 3/4" from the shank. This measurement indicates that the tooth has reached a level of wear where it can no longer effectively perform its intended function of grading or moving material. Replacing the tooth at this point ensures that the grader maintains optimal performance and efficiency, as excessively worn teeth can lead to poor grading results, increased wear on the equipment, and potentially more extensive damage.

The choice of a 3/4" depth aligns with common maintenance practices in grading equipment management, helping to ensure precise control and maintenance of the grader's operational capabilities. This proactive approach to maintenance is vital for maintaining the longevity of the equipment and achieving the required grading results.

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1" from the shank

1 1/2" from the shank

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