Connecting Rod Bearing Journal-to-Bearing Clearance

General Procedure

NOTE: Refer to general specifications in the appropriate Engine article for the appropriate specification.

NOTE: The crankshaft connecting rod journals must be within specifications to check the connecting rod bearing journal clearance.

1.

Remove the connecting rod bearing cap.

2.

Position a piece of Plastigage across the bearing surface.

GFD33979

Courtesy of FORD MOTOR COMPANY

3.

NOTE: Do not turn the crankshaft during this step.

Install and tighten to specifications, then remove the connecting rod bearing cap.

4.

Measure the Plastigage to get the connecting rod bearing journal clearance. The Plastigage should be smooth and flat. A changing width indicates a tapered or damaged connecting rod or connecting rod bearing.

GFD33980

Courtesy of FORD MOTOR COMPANY