Crankshaft Runout

Fig 1: Special Tool Chart

Courtesy of FORD MOTOR CO.

NOTE: Crankshaft main bearing journals must be within specifications before checking runout.

Fig 2: Measuring Crankshaft Runout, Using Dial Indicator Gauge

Courtesy of FORD MOTOR CO.

Use the Dial Indicator Gauge with Holding Fixture to measure the crankshaft runout.
- Refer to the appropriate article in ENGINES for the procedure.
- Rotate the crankshaft and subtract the lowest dial indicator reading from the highest dial indicator reading to figure the crankshaft runout. If it is out of specification, install new components as necessary. Refer to the appropriate article in ENGINES for the procedure.