Connecting Rod Bearing Journal Taper and Out-of-Round

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. 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.
- Stage 1: Tighten to 45 Nm (33 lb-ft).
- Stage 2: Tighten an additional 90 degrees.

4. Use a telescoping gauge and a 50-75 mm (2-3 in) micrometer to measure the connecting rod bearing bore. Measure and record the connecting rod bearing bore as indicated.
- Measure the connecting rod bearing bore again 90 degrees from the 1st measurement. Measure and record the connecting rod bearing bore.

- Install a new connecting rod if not within specification. For additional information, refer to Specifications.





5. 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.
- The difference between the 2 readings is the bore taper. Install new connecting rods if not within specifications. For additional information, refer to Specifications.