Crankshaft Main Bearing Journal - Clearance

WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

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

Remove the crankshaft main bearing caps and crankshaft main bearing.
Lay a piece of Plastigage across the face of each crankshaft main bearing surface.

Fig 1: Locating Plastigage Across Crankshaft Main Bearing Surface
Courtesy of FORD MOTOR CO.

NOTE: Do not turn the crankshaft while carrying out this procedure.

Install and remove the crankshaft main bearing cap.
Verify the crankshaft journal clearance.
- Refer to appropriate ENGINE article for the procedure.
- If out of specification, install new components as necessary. Refer to appropriate ENGINE article for the procedure.
  
  Fig 2: Measuring Plastigage Across Crankshaft Journal Surface
  Courtesy of FORD MOTOR CO.