Runout Check - Half-Round Companion Flange (Ford Axles Only)
WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Pinion bearing preload must be reset if the pinion nut has been loosened or removed.
- Raise the vehicle on a twin-post hoist that supports the rear axle.
- Remove the driveshaft. For additional information, refer to DRIVESHAFT article.
- Check the pinion flange for damage.
- Insert the correct size special tool.
- Position the special tool on the pinion flange.
- Align the holes on the gauge with the holes in the pinion flange and install the bolts and nuts.
- Position the special tool as shown. Adjust and lightly tighten the mounting bolts and nuts so the gauge runout is 0.254 mm (0.010 inch) or less.
- Position the special tool 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.
- 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 inch), 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. For additional information, refer to DRIVESHAFT article.
NOTE:
Accurate tool setup will result in accurate final readings.
If the flange runout exceeds 0.25 mm (0.010 inch), remove the pinion flange, reindex the flange 1/2 turn on the pinion and reinstall it.