Connecting Rod Bearing: Service and Repair

Connecting Rod Bearing Replacement

^ Tools Required
- J 5239 Connecting Rod Bolt Guide Set
- J 36660-A Electronic Torque Angle Meter

Removal Procedure





1. Remove the oil pan.
2. Remove the spark plugs from the cylinders that are being serviced.
3. Position the connecting rod to be serviced to Bottom Dead Center (BDC) by rotating the crankshaft.
4. Remove the oil pump bolt.
5. Remove the oil pump and the oil pump driveshaft.





6. Remove the crankshaft oil deflector nuts.
7. Remove the crankshaft oil deflector.





8. Remove the connecting rod cap nuts.
9. Remove the connecting rod cap and the lower connecting rod bearing.

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

10. Remove the lower connecting rod bearing from the connecting rod cap.
11. Install the J 5239 to the connecting rod.
12. Use the J 5239 to push up the connecting rod and the piston to access the upper connecting rod bearing.
13. Remove the upper connecting rod bearing.
14. Wipe the oil from the bearings.
15. Inspect the connecting rod bearings.
16. 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: Ensure that the connecting rod cap bolt holes and the connecting rod cap mating surfaces are clean and dry.





1. Use clean engine oil in order to lubricate the bearing surface.
2. Install the upper connecting rod bearing.
3. Use the J 5239 to pull down the piston' the connecting rod and the upper connecting rod bearing.
4. Remove the J 5239.
5. Install the lower connecting rod bearing to the connecting rod cap.
6. Install the connecting rod cap.

Notice: Refer to Fastener Notice in Service Precautions.

7. Install the connecting rod cap nuts.
7.1. Tighten the nuts to 20 Nm (15 ft. lbs.).
7.2. Use the J 36660-A to rotate the nuts an additional 75°.
8. Pry the connecting rod back and forth in order to check for binding. If necessary, loosen and then retighten the connecting rod cap nuts.





9. Measure the connecting rod side clearance.





10. Install the crankshaft oil deflector.
11. Install the crankshaft oil deflector nuts.
^ Tighten the nuts to 25 Nm (18 ft. lbs.).





12. Install the oil pump driveshaft and the oil pump.
13. Install the oil pump bolt.
^ Tighten the bolt to 41 Nm (30 ft. lbs.).
14. Install the spark plugs to the cylinders that was serviced.
15. Install the oil pan.
16. Inspect for proper oil pressure.
17. Inspect for leaks.