F 350 2WD Super Duty V8-6.4L DSL Turbo (2009)
Connecting Rod: Service and Repair
Connecting Rod Bearing Journal Taper and Out-of-Round
All Engines
Connecting Rod Bearing Journal Taper and Out-of-Round
NOTE: Refer to the Engine system level for the specification.
1. Measure the crankshaft connecting rod journal diameters in 2 directions perpendicular to one another at each end of the connecting rod journal.
The difference in the measurements from one end to the other is the taper. Verify measurement is within the wear limit.
Diesel Engine
Connecting Rod Bearing Journal Taper and Out-of-Round
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 in) 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. For additional
information, refer to Specifications.
4. Use a telescoping gauge and a 50-75 mm (2-3 in) 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. For additional information,
refer to Specifications.