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Flywheel Runout Check

WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools

Illustration Tool Name Tool Number
GF0000024
 Dial Indicator Gauge with Holding Fixture 100-002 (TOOL-4201-C) or equivalent
  1. Push the flywheel forward.
  2. Install the special tool against the flywheel face 25 mm (1 in) from the outer edge of the flywheel. Zero the dial indicator.
    Fig 1: Identifying Special Tool
    GF0007134Courtesy of FORD MOTOR CO.
  3. Turn the flywheel one complete revolution while observing the total indicator runout (TIR). The flywheel TIR must not exceed the specification.
    • If the flywheel TIR does not exceed the specification, proceed to the next step in this procedure to check the ring gear runout.
    • If the flywheel TIR exceeds the specification, remove the flywheel. For additional information, refer to CLUTCH article. Check for burrs between the flywheel and the crankshaft mounting flange. If burrs exist, remove them. Check the crankshaft flange runout.
      • If the crankshaft flange TIR does not exceed specification, and no burrs were found between the flywheel and the crankshaft mounting flange, install a new flywheel.
      • If the crankshaft flange TIR does not exceed specification, but burrs were removed from between the flywheel and the crankshaft mounting flange, reinstall the flywheel. For additional information, refer to CLUTCH article. Recheck the flywheel runout. If the flywheel TIR exceeds the specification, install a new flywheel.
      • If the crankshaft flange TIR exceeds specification, repair as necessary. Refer to the appropriate Engine article for the procedure. Reinstall the flywheel. For additional information, refer to CLUTCH article. Recheck the flywheel runout. If the flywheel TIR exceeds the specification, install a new flywheel.
    Fig 2: Checking Flywheel Runout
    GF0007135Courtesy of FORD MOTOR CO.
  4. Install the special tool against the ring gear face adjacent to the teeth. Zero the dial indicator.
    Fig 3: Identifying Special Tool On Ring Gear Face
    GF0007136Courtesy of FORD MOTOR CO.
  5. Turn the flywheel one complete revolution while observing the TIR. The ring gear TIR must not exceed the specification.
    • If the ring gear TIR exceeds the specification, install a new flywheel and ring gear assembly.
    Fig 4: Checking Total Indicator Runout Of Ring Gear
    GF0007137Courtesy of FORD MOTOR CO.
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