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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 556 (Front Drive Axle/Differential) >> In-Vehicle Repair >> Drive Pinion Flange and Seal >> Removal

Drive Pinion Flange and Seal: Removal

WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
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 as the original. 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: This operation disturbs the pinion bearing preload. Carefully reset the pinion bearing preload during assembly.
  1. With the vehicle in NEUTRAL, position it on a hoist. Refer to JACKING & LIFTING .
  2. Remove the front brake pads. Refer to FRONT DISC BRAKE .
  3. Remove the front driveshaft. Refer to DRIVESHAFT .
  4. Measure and record the pinion bearing preload.
    • Using a Nm (lb-in) torque wrench, rotate the pinion gear. Measure the torque required to maintain pinion gear rotation.
      Fig 1: Checking Pinion Bearing Preload Torque Using Torque Wrench
      G06125378Courtesy of FORD MOTOR CO.
  5. Index-mark the pinion flange and the drive pinion gear.
    Fig 2: Locating Index Mark Pinion Flange And Drive Pinion Gear
    G06125379Courtesy 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.

    Using the Drive Pinion Flange Holding Fixture to hold the pinion flange, remove and discard the pinion nut and washer.

    Fig 3: Removing Pinion Nut And Washer Using Drive Pinion Flange Holding Fixture
    G06125380Courtesy of FORD MOTOR CO.
  7. Using the 2 Jaw Puller, remove the pinion flange.
    Fig 4: Removing Pinion Flange Using Jaw Puller
    G06125381Courtesy of FORD MOTOR CO.
  8. Inspect the pinion flange for burrs and damage. Inspect the end of the pinion flange that contacts the pinion bearing cone, pinion nut counterbore and drive pinion seal surface for nicks. Discard the pinion flange if damaged.
  9. NOTE: Do not damage the axle housing.

    Force up on the metal flange of the drive pinion seal. Install gripping pliers and strike with a hammer to remove the drive pinion seal.

    Fig 5: Removing Drive Pinion Seal Using Tool
    G06125068Courtesy of FORD MOTOR CO.
  10. Verify the splines on the drive pinion gear are free of burrs. If burrs are evident, remove them with a fine crocus cloth.
  11. Clean the drive pinion seal bore.
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