Elevator Mechanic Practice Exam

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Prepare for the Elevator Mechanic Exam with comprehensive quizzes, flashcards, and multiple-choice questions. Each question includes hints and detailed explanations to ensure you are ready for your exam!

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If a step sags more than 1/8th inch on an escalator, which part of the truss should be inspected?

Upper assembly
Lower assembly
Both upper and lower truss assemblies
Middle assembly

The correct answer is: Both upper and lower truss assemblies

When a step sags more than 1/8th inch on an escalator, it indicates a potential issue with the overall structural integrity and alignment of the escalator system. As such, both the upper and lower truss assemblies need to be inspected. The upper assembly is crucial because it carries the weight and supports the steps as they ascend, while any misalignment or sagging in the lower assembly can contribute to uneven step placement and additional stress on components. Inspecting both assemblies allows for a thorough examination of the entire escalator mechanism, ensuring that any misalignment or wear can be identified and addressed appropriately. Focusing on only one truss assembly would not provide a complete view of the underlying issues that might be causing the step sagging. Instead, a comprehensive inspection of both the upper and lower assemblies will help maintain the safety and functionality of the escalator.