Wheel Hub Bolt Circle RUNOUT

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Mazda B4000, 2003 Mazda B4000, 2002 Mazda B4000, 2002 Mazda B3000, and 2001 Mazda B4000. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The brake discs/drums must be removed to perform all runout measurements.

Position the Dial Indicator with Bracketry perpendicular to the wheel hub or axle flange bolt, as close to the hub or flange face as possible. Zero the indicator to allow the pointer to deflect either way.

Fig 1: Wheel Hub Bolt Circle Runout Setup
Courtesy of MAZDA MOTORS CORP.
Rotate the hub or flange until the next bolt is contacted. Record the measurement and continue until each bolt is checked. The difference between the maximum and minimum contact readings will be the total wheel hub or axle flange bolt pattern runout. The runout must not exceed 0.38 mm (0.015 inch).