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Axle Flange Bolt Circle Runout - Semi-Floating Axle

WARNING: This page is about a different car, the 2002 Ford RV Cutaway, 2002 Ford Econoline, 2002 Ford E550 Super Duty, 2002 Ford E450 Super Duty, and 2002 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The brake discs or drums must be removed to carry out all runout measurements.
  1. Position the Dial Indicator Gauge with Holding Fixture perpendicular to the axle flange bolt, as close to the flange face as possible. Zero the indicator to allow the pointer to deflect either way.
    Fig 1: Measuring Axle Flange Bolt Circle Runout - Semi-Floating Axle
    G03404598Courtesy of FORD MOTOR CO.
  2. Rotate the 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 axle flange bolt pattern runout. The runout must not exceed 0.13 mm (0.005 inch)