NCCER Millwright Practice Exam

What common issue can arise from uneven tightening of the end shield plate?

1. Increased lubrication loss

2. Alignment problems with bearings

3. Excessive wear on seals

4. Overheating of the motor

The correct answer is: Alignment problems with bearings

Uneven tightening of the end shield plate can lead to misalignments, particularly with the bearings. When the plate is not properly aligned, the shaft may not be correctly positioned, which can cause bearings to experience uneven loading and stress. This misalignment can subsequently lead to increased vibration and reduced performance efficiency of the machinery. In the context of millwright work, ensuring even torque application during assembly is crucial for maintaining proper alignment and function. Proper alignment of the bearings is vital for preventing premature wear and failure of the bearings, which could ultimately compromise the operation of the machinery. This is why alignment problems with bearings is the correct choice in this scenario.