Crankshaft Main Bearing Journal - Clearance

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.

Special Tool(s)

Fig 1: Identifying Special Tool(s)

Courtesy of FORD MOTOR CO.

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 2: Positioning Plastigage On Crankshaft Main Bearing Caps
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 ENGINE - 3.9L & 4.2L for the procedure.
If out of specification, install new components as necessary. Refer to ENGINE - 3.9L & 4.2L for the procedure.

Fig 3: Measuring Crankshaft Journal Clearance

Courtesy of FORD MOTOR CO.