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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 299 (Front Drive Axle/Differential - Ford 8.8-Inch -- F150) >> General Procedures >> Differential Case Runout Check >> Special Tool(s)

Special Tool(s)

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Fig 1: Identifying Special Tools (1 Of 2)
G02187050Courtesy of FORD MOTOR CO.
Fig 2: Identifying Special Tools (2 Of 2)
G02187051Courtesy of FORD MOTOR CO.
    CAUTION: The fixture mounting bolts must have the minimum specified thread engagement in the carrier.
    Fig 3: Installing Holding Fixture
    G02187052Courtesy of FORD MOTOR CO.
  1. Install the special tool.
  2. Install the special tool.
    Fig 4: Installing Dial Indicator
    G02187053Courtesy of FORD MOTOR CO.
  3. Rotate the differential and check the ring gear backface runout.
    • If the ring gear backface runout exceeds the specification, the cause may be a warped ring gear, differential bearing/case damage. To determine the cause, remove the Dial Indicator with Bracketry, and proceed as follows:
      Fig 5: Measuring Ring Gear Backface Runout
      G02187054Courtesy of FORD MOTOR CO.
  4. Remove the bearing caps.
    1. Remove the bolts.
    2. Remove the bearing caps.
      Fig 6: Removing Bearing Caps
      G02187055Courtesy of FORD MOTOR CO.
  5. Remove the differential case with the bearing cups and the shims from the housing.
    Fig 7: Removing Differential Case
    G02187056Courtesy of FORD MOTOR CO.
  6. Remove the ring gear.
    • Remove the ten bolts.
    • Use a drift punch to separate the ring gear from the differential case.
      Fig 8: Removing Ring Gear
      G02187057Courtesy of FORD MOTOR CO.
    7. NOTE: It may be necessary to use the Differential Carrier Spreader to carry out this step.
  7. Install the differential case with the bearing cups and the shims in the housing.
    1. Position the differential case with the bearing cups and shims.
    2. Install the bearing caps.
    3. Install the bolts.
    4. Rotate the differential case to make sure the bearings have seated correctly.
      Fig 9: Installing Differential Case With Bearing Cups & Shims In The Housing
      G02187058Courtesy of FORD MOTOR CO.
  8. Install the special tool.
    Fig 10: Installing Dial Indicator
    G02187059Courtesy of FORD MOTOR CO.
  9. Rotate the differential case and check the differential case runout.
    • If the runout does not exceed the specification, install a new ring gear and pinion.
    • If runout exceeds the specification, the ring gear is true and the condition is due to differential case/differential bearing damage.
      • Inspect the differential bearings and the differential case. Always install new differential bearings when installing a new differential case, or if a bearing condition is questionable.
        Fig 11: Measuring Differential Case Runout
        G02187060Courtesy of FORD MOTOR CO.
  10. Remove the bearing caps, and the differential case with the bearing cups and shims from the housing.
  11. If necessary, using the special tools, remove the differential bearings.
    Fig 12: Removing Differential Bearing
    G02187061Courtesy of FORD MOTOR CO.
    12. CAUTION: Press against the differential bearing inner cone only.
  12. Install the new differential bearings.
    1. Position the appropriate differential bearing (RH or LH).
    2. Using a suitable press and the special tool, install the differential bearing.
      • Repeat the procedure for the other differential bearing.
        Fig 13: Installing New Differential Bearing
        G02187062Courtesy of FORD MOTOR CO.
    13. NOTE: It may be necessary to use the Differential Carrier Spreader to carry out this step.
    NOTE: Recheck the flange runout.
  13. Install the differential case with the bearing cups and the shims in the housing.
    1. Position the differential case with the bearing cups and shims.
    2. Install the bearing caps.
    3. Install the bolts.
    4. Rotate the differential case to make sure the bearings have seated correctly.
      Fig 14: Installing Differential Case With Bearing Cups & Shims
      G02187063Courtesy of FORD MOTOR CO.
  14. Install the special tool.
    Fig 15: Installing Dial Indicator
    G02187064Courtesy of FORD MOTOR CO.
    15. NOTE: If the runout is still excessive, install a new differential case.
    Fig 16: Checking Runout With New Differential Bearings
    G02187065Courtesy of FORD MOTOR CO.
  15. Check the runout with the new differential bearings. If the runout does not exceed the specification, use the new differential bearings for assembly.
  16. Remove the bolts.
    Fig 17: Removing Bearing Caps
    G02187066Courtesy of FORD MOTOR CO.
  17. Remove the differential case with the bearing cups and the shims from the housing.
    1. Remove the bearing caps.
    2. Remove the differential case with the bearing cups and the shims from the housing.
      Fig 18: Removing Differential Case
      G02187067Courtesy of FORD MOTOR CO.
  18. Install the ring gear and the differential assembly. Refer to AXLE-Front Drive .
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