Accord EX Coupe V6-3.0L (2001)
Connecting Rod Bearing: Service and Repair
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. Do not rotate the crankshaft.
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, 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
1. Inspect the connecting rods for cracks and heat damage.
Connecting Rod Bore/Journal Code Locations
2. Each rod has a tolerance range (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 code (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 III
in any engine.
Half of the code is stamped on the bearing cap and the other half is stamped on the rod. If the codes are indecipherable because of an accumulation
of dirt and dust, do not scrub them with a wire brush or scraper. Clean them only with solvent or detergent.
Connecting Rod Journal Code Locations