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Home >> Lincoln >> 2009 >> MKX FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 867 (Rear Drive Axle/Differential - Ford 7.5-Inch Ring Gear) >> In-Vehicle Servicing >> Differential Case >> Installation >> Backlash not within specification

Backlash not within specification

WARNING: This page is about a different car, the 2007 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Differential Bearing Shims
GF0009732Courtesy of FORD MOTOR CO.
  1. To increase or decrease the backlash, remove the bearing caps and install a thicker shim or a thinner shim as shown.
    • If the backlash is not within specification, correct by increasing the thickness of one differential bearing shim and decreasing the thickness of the other differential bearing shim by the same amount.
  2. Fig 2: Rotating Differential Assembly
    GF0000844Courtesy of FORD MOTOR CO.
  3. Rotate the differential several times to make sure the differential bearings are correctly seated.
  4. Fig 3: Measuring Ring Gear Backlash
    G03878618Courtesy of FORD MOTOR CO.
  5. Using the special tools, recheck the backlash.
    • If backlash is within the specification, refer to Backlash within specification in this procedure. If backlash is not within the specification, repeat Backlash not within specification in this procedure.