Connecting Rod Bearing: Service and Repair

Connecting Rod Bearing Replacement

Tools Required

* J 41507 Connecting Rod Assembly Guide
* J 45059 Electronic Torque Angle Meter

Removal Procedure

1. Remove the oil pan.
2. Remove the spark plugs from the cylinders that is being serviced.
3. Position the connecting rod to be serviced to Bottom Dead Center (BDC) by rotating the crankshaft.




4. Remove the connecting rod cap bolts.
5. Remove the connecting rod cap and lower connecting rod bearing.

Important: Keep the bearings with the original connecting rod and cap. Do this in order to reassemble the connecting rod.

6. Remove the lower connecting rod bearing from the connecting rod cap.




7. Install the J 41507 to the connecting rod.
8. Use the J 41507, in order to push up the connecting rod and piston and access the upper connecting rod bearing.
9. Remove the upper connecting rod bearing.
10. Wipe the oil from the bearings.
11. Inspect the connecting rod bearings.
12. Measure the bearing clearance.

Installation Procedure





Notice: Do not scrape, shim, or file bearing inserts. If the bearing surface of the insert is touched with bare fingers, the skin oil and acids will etch the bearing surface.

Important: Make sure that the connecting rod cap bolt holes and the connecting rod cap mating surfaces are clean and dry.

1. Dip the connecting rod cap bolts in clean engine oil.
2. Use clean engine oil in order to lubricate the bearing surface.
3. Install the upper connecting rod bearing.
4. Use the J 41507, in order to pull down the piston, connecting rod and upper connecting rod bearing.
5. Remove the J 41507.




6. Install the lower connecting rod bearing to the connecting rod cap.
7. Install the connecting rod cap.

Notice: Refer to Fastener Notice in Service Precautions.

8. Install the connecting rod cap bolts.
1. Tighten the connecting rod cap bolts to 27 N.m (20 lb ft).
2. Use the J 45059 to rotate the connecting rod cap bolts an additional 50 degrees.
9. Pry the connecting rod back and forth in order to check for binding. If necessary, loosen and then retighten the connecting rod cap bolts.




10. Measure the connecting rod side clearance.
11. Install the spark plugs to the cylinders.
12. Install the oil pan.
13. Inspect for proper oil pressure.
14. Inspect for leaks.