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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 141 (Rear Drive Axle/Differential - Ford 8.8-Inch Ring Gear -- F150) >> In-Vehicle Repair >> Drive Pinion Flange and Drive Pinion Seal >> Installation

Drive Pinion Flange and Drive Pinion Seal: Installation

WARNING: This page is about a different car, the 2012 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. Lubricate the new drive pinion seal with grease.
    2. NOTE: If the new drive pinion seal becomes misaligned during installation, remove the drive pinion seal and install a new drive pinion seal.
    Fig 1: Installing Drive Pinion Seal
    G06166753Courtesy of FORD MOTOR CO.
  2. Using the Drive Pinion Oil Seal Installer, install a new drive pinion seal.
  3. Lubricate the pinion flange splines with axle lubricant.
    4. NOTE: Disregard the scribe marks if a new pinion flange is being installed.
    Fig 2: Locating Index-Mark On Pinion Flange And Drive Pinion
    G06142836Courtesy of FORD MOTOR CO.
  4. Align the pinion flange with the drive pinion shaft.
  5. Using the Drive Pinion Flange Installer, install the pinion flange.
    Fig 3: Installing Pinion Flange Using Special Tool
    G06166755Courtesy of FORD MOTOR CO.
    6. NOTE: Install a new pinion nut with the same color as the original if not replacing the collapsible spacer. If a new collapsible spacer is installed, install the nut in the kit or damage to the component may occur.
    Fig 4: Locating Pinion Nut
    G07957254Courtesy of FORD MOTOR CO.
  6. Position the new pinion nut.
    8.8-IN DRIVE PINION NUT

    Part Number Color Description Application
    389546-S100 Orange Axles built before 7/16/07
    4320 Purple Axles built after 7/16/07
    4C121 Purple Kit with spacer for all 223.52 mm (8.8 in) axles
    7. NOTE: Under no circumstances is the pinion nut to be backed off to reduce drive pinion bearing preload. If reduced drive pinion bearing preload is required, a new drive pinion collapsible spacer and pinion nut must be installed or damage to the component may occur.
    NOTE: 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 or damage to the component may occur.
    NOTE: Remove the Drive Pinion Flange Holding Fixture while taking drive pinion bearing preload readings with the Nm (lb-in) torque wrench.
  7. Using the Drive Pinion Flange Holding Fixture to hold the pinion flange, tighten the pinion nut.
    • Rotate the drive pinion occasionally to make sure the drive pinion bearings are seating correctly.
    • Install a Nm (lb-in) torque wrench on the pinion nut.
    • Rotating the drive pinion through several revolutions, take frequent drive pinion bearing preload readings until the original recorded drive pinion bearing preload reading is obtained.
    • If the original recorded drive pinion bearing preload is lower than specifications, tighten to the appropriate specifications for used drive pinion bearings. If the drive pinion bearing preload is higher than specification, tighten the pinion nut to the original reading as recorded. For additional information, refer to SPECIFICATIONS  .
      Fig 5: Tightening Pinion Nut
      G06166749Courtesy of FORD MOTOR CO.
  8. Install the driveshaft. For additional information, REFER to DRIVESHAFT .
  9. Install the brake disc. For additional information, REFER to REAR DISC BRAKE .
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