Pinion Flange Runout Check - Circular
WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. 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 for pinion flange reindexing or replacement or damage to the component may occur.
- Raise the vehicle on a twin-post hoist that supports the rear axle.
- Remove the driveshaft. Refer to DRIVESHAFT article.
- Check the pinion flange for damage.
- Position special tool on the pinion flange.
Item Part Number Description 1 - Pilot (part of 205-319) (T92L-4851-B) 2 354845 Pinion nut 3 205-319 Gauge, Companion Flange Runout (T92L-4851-B) 4 - Bolts (2 required) (part of 205-320) (T92L-4851-C) 5 205-320 Plate, Companion Flange (T92L-4851-C) 6 4851 Pinion flange - Position the special tools onto the pinion flange.
- Align the holes on the clamp plate with the holes in the pinion flange and install the bolts. Snug the bolts evenly.
- Position the special tool as shown. Turn the special tool, and locate and mark the high spot on the pinion flange with yellow paint.
- Check the runout again. If necessary, rotate 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 replacement of the pinion flange, install a new ring and pinion. Repeat the above checks until the runout is within specifications.
- Install the driveshaft. Refer to DRIVESHAFT article.
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. Refer to REAR DRIVE AXLE/DIFFERENTIAL - FORD 8.8-INCH RING GEAR article, REAR DRIVE AXLE/DIFFERENTIAL - FORD 9.75-INCH RING GEAR article, REAR DRIVE AXLE/DIFFERENTIAL - FORD 10.25-INCH RING GEAR article or FRONT DRIVE AXLE/DIFFERENTIAL article for the flange removal and installation procedures.