Crankshaft - Runout

Special Tool(s) 

Fig 1: Identifying Special Tools

Courtesy of FORD MOTOR CO.

NOTE: Crankshaft main bearing journals must be within specifications before checking runout.
Fig 2: Measuring Crankshaft Runout
Courtesy of FORD MOTOR CO.
1. Use the Dial Indicator with Bracketry to measure the crankshaft runout.
   • 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.