Econoline E150 1/2 Ton V8-5.4L CNG VIN M (1998)
Connecting Rod: Testing and Inspection
Connecting Rod Bearing Journal Clearance
1. Remove the connecting rod bearing cap.
NOTE: The crankshaft connecting rod journals must be within specifications to check the connecting rod bearing journal clearance.
2. Position a piece of Plastigage across the bearing surface.
3. Install and tighten to specifications, then remove the connecting rod bearing cap.
NOTE: Do not turn the crankshaft during this step.
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.
Connecting Rod Bend
1. Measure the connecting rod bend on a suitable alignment fixture. Follow the instructions of the fixture manufacturer. Verify the bend measurement
is within specification.
Connecting Rod Bushing Diameter