Crankshaft Main Bearing Journal-to-Bearing Clearance

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to SPECIFICATIONS .

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.

Fig 2: Measuring Plastigage Across Crankshaft Journal Surface

Courtesy of FORD MOTOR CO.