Clean each main journal and the bearing half with a clean shop towel.
2.
Place one strip of plastigage across each main journal.
3.
Apply new engine oil to the bearing cap bolts (A) threads and flanges.
4.
Install the bearing cap bolts to the main bearing cap (B).
5.
Set the bearing halves (C), the main bearing caps, and the bearing cap bolts in place. Then loosely tighten the bearing cap bolts.
NOTE:
Install the main bearing caps aligning the arrows (D) with the direction to the cam chain case.
When loosely tightening the bearing cap bolts, do not sit the bolts on the bearing caps.
6.
Lightly tap the main bearing caps with a plastic mallet until the main bearing caps sit on the engine block.
7.
Tighten the bearing cap bolts, in the numbered sequence shown, to the specified torque.
Specified Torque:
30 N·m (3.1 kgf·m, 22 lbf·ft)
NOTE: Do not rotate the crankshaft during inspection.
8.
Tighten the bearing cap bolts an additional 40 °.
9.
Remove the main bearing cap and the bearings again, and measure the widest part of the plastigage.
Main Bearing-to-Journal Oil Clearance
Standard (New):
0.018?0.036 mm (0.00071?0.00142 in)
Service Limit:
0.050 mm (0.00197 in)
10.
If the plastigage measures too wide or too narrow, remove the crankshaft, and remove the upper half of the bearing. Install a new, complete bearing with the appropriate color code(s), and recheck the clearance. Do not file, shim, or scrape the bearings or the caps to adjust clearance.
11.
If the plastigage shows the clearance is still incorrect, try the next larger or smaller bearing (the color listed above or below the current one), and check again. If the proper clearance cannot be obtained by using the appropriate larger or smaller bearings, replace the crankshaft and start over.
11.
Crankshaft Main Bearing - Select
Block Bore Code Location
1.
Numbers, letters, or bars have been stamped on the end of the engine block as a code for the size of each of the five main journal bores. Use them, and the numbers stamped on the crankshaft (codes for main journal size), to choose the correct main bearings.
NOTE: 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.
Main Journal Code Location
2.
The main journal codes are stamped on the crankshaft.
Bearing Identification
3.
Use the block bore codes and the main journal codes to select the appropriate replacement bearings from the following table.
NOTE:
Color code is on the edge of the bearing.
When using bearing halves of different colors, it does not matter which color is used in the top or bottom.
12.
All Removed Parts - Install
1.
Install the parts in the reverse order of removal.
