Flywheel Runout Check

WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

SPECIAL TOOL

Dial Indicator Gauge with Holding Fixture 100-002 (TOOL-4201-C) or equivalent

Push the flywheel forward.
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: Installing Special Tool Against Flywheel Face 25 Mm From Outer Edge Of Flywheel
Courtesy of FORD MOTOR CO.
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 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 2: Checking Total Indicator Runout Of Flywheel
    Courtesy of FORD MOTOR CO.
Install the special tool against the ring gear face adjacent to the teeth. Zero the dial indicator.

Fig 3: Installing Special Tool Against Ring Gear Face Adjacent To Teeth
Courtesy of FORD MOTOR CO.
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 4: Checking Total Indicator Runout Of Ring Gear
  Courtesy of FORD MOTOR CO.