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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 142 (Rear Drive Axle/Differential - Ford 9.75-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. Using the Drive Pinion Oil Seal Installer, install a new drive pinion seal.
    Fig 1: Installing Drive Pinion Seal
    G06166958Courtesy of FORD MOTOR CO.
  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: Identifying Index-Mark Pinion Flange In Relation To Drive Pinion Stem
    G06166955Courtesy 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
    G06166960Courtesy 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, as indicated in the chart below, or damage to the component may occur.
    Fig 4: Identifying Pinion Nut
    G06166961Courtesy of FORD MOTOR CO.
  6. Position the new pinion nut.
    9.75 INCH DRIVE PINION NUT

    Part Number Color Description Application
    19G405 Green Axles built before 7/16/07
    4320 White Axles built after 7/16/07
    4C121 White Kit with spacer for all 9.75-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: 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 specification, tighten to the appropriate specification 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 the SPECIFICATION  portion of this section.
      Fig 5: Tightening Pinion Nut
      G06142591Courtesy of FORD MOTOR CO.
  8. Position the driveshaft and align the index mark on the pinion flange.
    Fig 6: Aligning Index Mark On Pinion Flange
    G06166963Courtesy of FORD MOTOR CO.
    9. NOTE: The driveshaft centering socket yoke fits tightly on the pinion flange pilot. To make sure that the driveshaft centering socket yoke seats squarely on the pinion flange, tighten the driveshaft flange bolts evenly in a cross pattern.
  9. Install the 4 new driveshaft flange bolts.
    • Tighten to 103 Nm (76 lb-ft).
      Fig 7: Locating Driveshaft Flange Bolt
      G06166964Courtesy of FORD MOTOR CO.
  10. Install the rear brake disc. For additional information, REFER to REAR DISC BRAKE .
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