Runout Check - Half-Round Companion Flange (Ford Axles Only)
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Pinion bearing preload must be reset if the pinion nut has been loosened or damage to the component will result.
- Raise the vehicle on a twin-post hoist that supports the rear axle.
- Remove the driveshaft. Refer to DRIVESHAFT .
- Check the pinion flange for damage.
- Insert the correct size Drive Pinion Flange Pin Gauge.
- Position the Drive Pinion Flange Runout Gauge on the pinion flange.
- Align the holes on the Dial Indicator Gauge with Holding Fixture with the holes in the pinion flange and install the bolts and nuts.
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NOTE: Accurate tool setup will result in accurate final readings.
Position the Dial Indicator Gauge with Holding Fixture as shown below. Adjust and lightly tighten the mounting bolts and nuts so the gauge runout is 0.254 mm (0.010 in) or less.
- Position the Dial Indicator Gauge with Holding Fixture on the edge of the gauge. Turn the drive pinion runout gauge, and locate and mark the high spot on the pinion flange with yellow paint.
Courtesy of FORD MOTOR CO.
If the flange runout exceeds 0.25 mm (0.010 in), remove the pinion flange, reindex the flange one-half turn on the pinion and reinstall it.
- Check the runout again. If necessary, reindex the flange until an acceptable runout is obtained. If the flange runout is still more than 0.25 mm (0.010 in), install a new pinion flange.
- If excessive runout is still evident after installing the new pinion flange, install a new ring and pinion. Repeat the above checks until the runout is within specifications.
- Install the driveshaft. Refer to DRIVESHAFT .