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Crankshaft Main Bearing Journal-to-Bearing Clearance

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer toappropriate article in Engine for the specification.
NOTE: Crankshaft main bearing journals must be within specifications before checking journal clearance.
  1. Remove the crankshaft main bearing caps and crankshaft main bearing.
  2. Lay a piece of Plastigage across the face of each crankshaft main bearing surface.
    Fig 1: Checking Bearing Clearance Using Plastigage
    G06064062Courtesy of FORD MOTOR CO.
  3. NOTE: Do not turn the crankshaft while carrying out this procedure.
  4. Install and remove the crankshaft main bearing cap.
  5. Verify the crankshaft journal clearance.
    Fig 2: Measuring Crankshaft Main Bearing Journal-To-Bearing Clearance
    G06064063Courtesy of FORD MOTOR CO.