Pinion Flange Runout Check - Circular

Driveline System

Component Tests

Pinion Flange Runout Check - Circular

NOTICE: Pinion bearing preload must be reset if the pinion nut has been loosened or removed for pinion flange reindexing or replacement or damage to the component may occur.

1. Remove the driveshaft. Refer to Drive/Propeller Shafts, Bearings and Joints.

2. Check the pinion flange for damage.

3. Position the Drive Pinion Flange Runout Gauge and Driveshaft Clamp Plate on the pinion flange.











4. Align the holes on the clamp plate with the holes in the pinion flange and install the bolts. Snug the bolts evenly.

5. Position the Dial Indicator Gauge with Holding Fixture as shown. Turn the Drive Pinion Flange Runout Gauge, and locate and mark the high spot on the pinion flange with yellow paint.





If the flange runout exceeds 0.203 mm (0.008 in), remove the pinion flange, reindex the flange one-half turn on the pinion, and reinstall it. Refer to Differential Assembly &/or Axle Shaft Assembly or Differential Assembly for the flange removal and installation procedures.

6. Check the runout again. If necessary, rotate the flange until an acceptable runout is obtained. If the flange runout is still more than 0.203 mm (0.008 in), install a new pinion flange.






7. If excessive runout is still evident after replacement of the pinion flange, install a new ring and pinion. Repeat the above checks until the runout is within specifications.

8. Install the driveshaft. Refer to Drive/Propeller Shafts, Bearings and Joints.