When measuring flywheel radial runout, where should you position the dial indicator?

Positioning the dial indicator at the edge of the flywheel is essential for accurately measuring radial runout. This location maximizes the sensitivity of the measurement because any deviations or imperfections in the flywheel's surface are more pronounced at the outer edge. The edge is where the flywheel interacts with other components, such as the clutch, and any runout here can lead to issues like vibration or clutch engagement problems.

Using this measurement point allows for a clearer assessment of the flywheel's performance and helps ensure that it functions properly in the system. Other positions, such as the center of the flywheel or the rear face, may not provide an accurate representation of the runout that affects the overall operation in practical applications.