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Home >> Ford >> 2002 >> Excursion 7.3 F, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 353 (Manual Transmission, Clutch & Transfer Case - General Information - Excursion & F250-F550 Super Duty) >> General Procedures >> Flywheel Runout Check

Flywheel Runout Check

WARNING: This page is about a different car, the 2002 Ford Pickup, 2002 Ford F550 Super Duty, and 2002 Ford F450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Special Tool
G03414163Courtesy of FORD MOTOR CO.
  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 2: Installing Special Tool Against Flywheel Face
    G03414164Courtesy 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 . 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 . 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 article in ENGINE for the procedure. Reinstall the flywheel. For additional information, refer to CLUTCH . Recheck the flywheel runout. If the flywheel TIR exceeds the specification, install a new flywheel.
        Fig 3: Checking Flywheel Runout
        G03414165Courtesy of FORD MOTOR CO.
  4. Install the special tool against the ring gear face adjacent to the teeth. Zero the dial indicator.
    Fig 4: Installing Special Tool Against Ring Gear Face Adjacent To Teeth
    G03414166Courtesy of FORD MOTOR CO.
  5. Turn the flywheel one complete revolution while observing the total indicator runout (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 5: Checking Flywheel Runout By Turn Flywheel One Complete Revolution
      G03414167Courtesy of FORD MOTOR CO.
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