RL V6-3.5L (2007)
Connecting Rod Bearing: Service and Repair
Connecting Rod Bearing Replacement
Rod Bearing Clearance Inspection
1. Remove the connecting rod cap and bearing half.
2. Clean the crankshaft rod journal and bearing half with a clean shop towel.
3. Place a strip of plastigage across the rod journal.
4. Reinstall the bearing half and cap, and torque the bolts.
Tightening Torque 20 Nm (2.0 kgf-m, 14 ft. lbs.) + 90°
Apply new engine oil to the bolt threads.
NOTE: Do not rotate the crankshaft during inspection.
5. Remove the rod cap and bearing half and measure the widest part of the plastigage.
6. If the plastigage measures too wide or too narrow, remove the upper half of the bearing, then install a new, complete bearing with the same color
code, and recheck the clearance. Do not file, shim, or scrape the bearings or the caps to adjust clearance.
7. If the plastigage shows the clearance is still incorrect, try the next larger or smaller bearing (the color listed above or below that one), and check
clearance again. If the proper clearance cannot be obtained by using the appropriate larger or smaller bearings, replace the crankshaft and start
over.
Rod Bearing Selection
Each rod falls into one of four tolerance ranges (from 0 to 0.024 mm (0.0009 inch), in 0.006 mm (0.0002 inch) increments) depending on the size of
its big end bore. It's then stamped with a number or bar (1, 2, 3, or 4/I, II, III, or IIII) indicating the range. You may find any combination of 1, 2, 3, or
4/I, II, III, or IIII in any engine.
Normal Bore Size: 58.0 mm (2.28 inch)
Inspect the connecting rod for cracks and heat damage.
Connecting Rod Journal Code Locations
