Measuring Acceptable End Play
Using a magnetic base, mount the dial indicator on the spindle end, making sure the hub face is clean and free of gasket material.
Adjust the arm of the dial indicator, setting the plunger tip of the indicator on the machined face of the hub at the 12 o’clock position. The plunger should be set up so that it is parallel to the axis of the spindle. When positioning the indicator tip, ensure that the indicator has adequate range of travel for proper measurement. Set the indicator to zero.
Grasp the wheel/hub assembly at the 3 o’clock and 9 o’clock positions. Pull the wheel end assembly outward while oscillating the wheel approximately 45.° While continuing to pull, stop oscillating and read the indicator.
Push the wheel assembly inward while oscillating. While continuing to push, stop oscillating and read the indicator.
Read bearing end play as total indicator movement.
***Acceptable end play is .001” to .005” as measured with a dial indicator as per TMC’s Recommended Bearing Adjustment Procedure