Crankshaft Main Bearing Journal - Clearance

WARNING: This page is about a different car, the 2002 Ford Econoline, 2002 Ford E550 Super Duty, 2002 Ford E450 Super Duty, and 2002 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: 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: Checking Crankshaft Main Bearing - Clearance (Using Plastigage)
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 the appropriate ENGINE article for the procedure.
- If out of specification, install new components as necessary. Refer to the appropriate ENGINE article for the procedure.
  
  Fig 3: Measuring Crankshaft Journal - Clearance (Using Plastigage)
  Courtesy of FORD MOTOR CO.