Companion Flange Runout Check
Companion Flange Runout CheckCAUTION: Pinion bearing preload must be reset if the pinion nut has been loosened or removed for pinion flange re indexing or installation.
1. With the vehicle in NEUTRAL, position it on a hoist. Refer to Vehicle/Application and ID.
2. Remove the driveshaft.
3. Check the pinion flange for damage.
4. Position the Companion Flange Runout Gauge on the pinion flange.
5. Position the special tools on the pinion flange.
6. Align the holes on the clamp plate with the holes in the pinion flange and install the bolts. Snug the bolts evenly.
7. Position the special tool as shown. Turn the Companion Flange Runout Gauge, and locate and mark the high spot on the pinion flange with yellow paint.
If the pinion flange runout exceeds 0.25 mm (0.010 inches), remove the pinion flange, reindex the pinion flange 1/2 turn on the pinion, and reinstall it.
8. Check the runout again. If necessary, rotate the pinion flange until an acceptable runout is obtained. If the pinion flange runout is still more than 0.25 min (0.010 inches), install a new pinion flange.
9. If excessive runout is still evident after installing a new pinion flange, install a new ring and pinion. Repeat the above checks until the runout is within specifications.
10. Install the driveshaft.