Rear Drive Axle/Differential - Ford 10.50-Inch Ring Gear

Drive Pinion Flange and Drive Pinion Seal










Removal

1. NOTICE: The color on the rear face of the drive pinion nut is critical to this repair. Use the same color new drive pinion nut for installation. If a new collapsible spacer must be installed for pinion bearing preload reduction, install the nut supplied with the new spacer kit or damage to the component may occur.

Remove the axle shafts.

2. Remove the driveshaft. For additional information, refer to Drive/Propeller Shafts, Bearings and Joints.

3. Install a Nm torque wrench on the pinion nut and record the rotational torque required to maintain rotation of the pinion through several revolutions.





4. Using the Drive Pinion Flange Holding Fixture to hold the pinion flange, remove the pinion nut.
- Discard the pinion nut.





5. Mark the pinion flange in relation to the drive pinion stem to make sure alignment is correct during installation.





6. Using the 2 Jaw Puller, remove the pinion flange.





7. Force up on the metal flange of the rear axle drive pinion seal. Install gripping pliers to the seal flange and strike with a hammer until the rear axle drive pinion seal is removed.





Installation

1. Lubricate the new pinion seal with clean long-life grease.

2. NOTICE: If the rear axle drive pinion seal becomes misaligned during installation, remove it and install a new seal. Failure to install a new seal will result in a fluid leak and possible component damage.

Using the Drive Pinion Oil Seal Installer, install a new rear axle drive pinion seal.





3. Lubricate the pinion flange splines with clean synthetic rear axle lubricant.

4. NOTE: Disregard the scribe marks if a new pinion flange is being installed.

Align the pinion flange with the drive pinion shaft.





5. Using the Drive Pinion Flange Holding Fixture and Drive Pinion Flange Installer, install the pinion flange.





6. NOTICE: Install a new pinion nut with the same color as the original if not replacing the collapsible spacer or damage to the component may occur.

Install the new washer and pinion nut. Only hand-tighten the pinion nut at this time.

7. NOTICE: Do not loosen the pinion nut to reduce drive pinion bearing preload. Install a new drive pinion collapsible spacer and pinion nut if drive pinion bearing preload reduction is necessary. If a new collapsible spacer must be installed for pinion bearing preload reduction, install the nut supplied with the new spacer kit or damage to the component may occur.

Using the Drive Pinion Flange Holding Fixture to hold the pinion flange, tighten the pinion nut to set the drive pinion bearing preload.

- Tighten the pinion nut, rotating the pinion occasionally to make sure the drive pinion bearings are seating correctly. Take frequent drive pinion bearing preload readings by rotating the drive pinion gear with a Nm (lb-in) torque wrench. The final readings must be 0.56 Nm (5 lb-in) more than the initial reading taken during removal.

8. Install the driveshaft. For additional information, refer to Drive/Propeller Shafts, Bearings and Joints.

9. Install the axle shafts. For additional information, refer to Differential Assembly and/or Axle Shaft Assembly.