F 350 4WD Super Duty V8-6.4L DSL Turbo (2008)
Connecting Rod Bearing: Testing and Inspection
Connecting Rod Bearing Journal Taper and Out-of-Round
Connecting Rod Bearing Journal Taper and Out-of-Round
Inspection
1. Mark each connecting rod and its corresponding rod cap for correct installation.
2. Using a suitable solvent, thoroughly clean the connecting rod and rod cap.
3. Use a telescoping gauge and a 50-75 mm (2-3 inch) micrometer to measure the connecting rod bearing bore.
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Remove the connecting rod bearings from the connecting rod and the connecting rod cap. Install the connecting rod cap onto the connecting
rod and tighten the bolts in 2 stages.
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Stage 1: Tighten to 45 Nm (33 lb-ft).
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Stage 2: Tighten to 68 Nm (50 lb-ft).
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Measure and record the connecting rod bearing bore as indicated. Install new connecting rods if not within specification.
4. Use a telescoping gauge and a 50-75 mm (2-3 inch) micrometer to measure the connecting rod bearing bore taper.
1
Measure the bearing bore inside diameter near the large chamfer.
2
Measure the bearing bore inside diameter near the small chamfer.
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The difference between the 2 readings is the bore taper. Install new connecting rods if not within specifications.
