QuestionAugust 23, 2025

Which of these drum brake defects may be repairable by re-surfacing the drum? Select all the correct answers. Glazed spots (hot spots) Scoring Cracks Contamination

Which of these drum brake defects may be repairable by re-surfacing the drum? Select all the correct answers. Glazed spots (hot spots) Scoring Cracks Contamination
Which of these drum brake defects may be repairable by re-surfacing the drum? Select all the correct answers.
Glazed spots (hot spots)
Scoring
Cracks
Contamination

Solution
4.0(133 votes)

Answer

Scoring Explanation 1. Identify Repairable Defects Re-surfacing can address defects that involve surface irregularities without compromising structural integrity. 2. Evaluate Each Defect - **Glazed spots (hot spots):** Not typically repairable by re-surfacing as they indicate heat damage. - **Scoring:** Repairable by re-surfacing to smooth out the grooves. - **Cracks:** Not repairable by re-surfacing; structural integrity is compromised. - **Contamination:** Not repairable by re-surfacing; requires cleaning or replacement.

Explanation

1. Identify Repairable Defects<br /> Re-surfacing can address defects that involve surface irregularities without compromising structural integrity.<br /><br />2. Evaluate Each Defect<br /> - **Glazed spots (hot spots):** Not typically repairable by re-surfacing as they indicate heat damage.<br /> - **Scoring:** Repairable by re-surfacing to smooth out the grooves.<br /> - **Cracks:** Not repairable by re-surfacing; structural integrity is compromised.<br /> - **Contamination:** Not repairable by re-surfacing; requires cleaning or replacement.
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