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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 970 (Driveline System - General Information -- F150) >> Diagnosis And Testing >> Driveline System >> Pinion Flange Runout Check - Circular

Pinion Flange Runout Check - Circular

WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Pinion bearing preload must be reset if the pinion nut has been loosened or removed for pinion flange reindexing or installation.
  1. Raise the vehicle on a twin-post hoist that supports the vehicle. For additional information, refer to JACKING & LIFTING .
  2. Remove the driveshaft. For additional information, refer to DRIVESHAFT .
  3. Check the pinion flange for damage.
  4. Position the Companion Flange Runout Gauge on the pinion flange.
    Fig 1: Identifying Companion Flange Runout Gauge & Pinion Flange
    G03959907Courtesy of FORD MOTOR CO.
  5. Position the Clamp Plate onto the Companion Flange Runout Gauge.
    Fig 2: Positioning Clamp Plate Onto Companion Flange Runout Gauge
    G03912417Courtesy of FORD MOTOR CO.
  6. Align the holes on the clamp plate with the holes in the pinion flange and install the bolts. Snug the bolts evenly.
    Fig 3: Aligning Holes On Clamp Plate With Holes In Pinion Flange And Installing Bolts
    G04582824Courtesy of FORD MOTOR CO.
  7. Position the Dial Indicator/Magnetic Base as shown. Turn the Companion Flange Runout Gauge, and locate and mark the high spot on the pinion flange with yellow paint.
    Fig 4: Positioning Dial Indicator/Magnetic Base
    G04001039Courtesy of FORD MOTOR CO.

    If the flange runout exceeds 0.25 mm (0.010 inch), remove the pinion flange, reindex the flange one-half turn on the pinion, and reinstall it. For additional information, refer to REAR DRIVE AXLE/DIFFERENTIAL - FORD 8.8-INCH RING GEAR or FRONT DRIVE AXLE/DIFFERENTIAL for the flange removal and installation procedures.

  8. Check the runout again. If necessary, rotate the flange until an acceptable runout is obtained. If the flange runout is still more than 0.25 mm (0.010 inch), install a new pinion flange.
    Fig 5: Checking Runout
    G03878430Courtesy of FORD MOTOR CO.
  9. For the rear axle, if excessive runout is still evident after installation of the pinion flange, install a new ring and pinion. Repeat the above checks until the runout is within specifications.
  10. Install the driveshaft. For additional information, refer to DRIVESHAFT .
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