Drive Pinion Flange: Installation
- Inspect the rear axle pinion flange seal journal for rust, nicks, and scratches prior to installing the flange. Polish the seal journal with fine crocus cloth, if necessary.
- Lubricate the rear axle pinion flange splines.
- Use SAE 75W-140 High Performance Rear Axle Lubricant F1TZ-19580-B or equivalent meeting Ford specification WSL-M2C192-A.
- Position the rear axle pinion flange.
- Using the special tools, install the rear axle pinion flange.
- Tighten the nut to set the preload.
- Rotate the pinion occasionally to make sure the pinion bearings (4630) (4621) seat correctly. Take frequent pinion bearing torque preload readings by rotating the drive pinion gear with a N.m (inch/pound) torque wrench.
- If the preload recorded prior to disassembly is lower than the specification for used bearings, then tighten the nut to specification. If the preload recorded prior to disassembly is higher than the specification for used bearings, then tighten the nut to the original reading as recorded.
- Refer to the TORQUE SPECIFICATIONS for used pinion bearings.
- Connect the driveshaft. For additional information, refer to DRIVESHAFT .
- Install the rear brake calipers. For additional information, refer to DISC .
- Install the rear wheel and tire assemblies.
- Lower the vehicle.
NOTE:
Disregard the index marks if installing a new rear axle pinion flange.
CAUTION:
Do not under any circumstance loosen the nut to reduce preload. If it is necessary to reduce preload, install a new differential drive pinion collapsible spacer (4662) and nut.
CAUTION:
Align the index-marks.
CAUTION:
Install the driveshaft with new bolts. If new bolts are not available, apply Threadlock and Sealer EOAZ-19554-AA or equivalent meeting Ford specification WSK-M2G351-A5 to the threads of the original bolts.
CAUTION:
The driveshaft centering socket yoke fits tightly on the rear axle pinion flange pilot. To make sure that the yoke seats squarely on the flange, tighten the bolts evenly in a cross pattern as shown.