CRANKSHAFT OIL CLEARANCE INSPECTION/REPAIR

Caution

• Because the bolts are pliant bolts, they cannot reused. Use new bolts for inspection. The bolts may be reused for assembly.

1. Install the upper main bearing and crankshaft.

2. Position a plastigage atop the journals in the axial direction.

3. Install the lower mainbearing and lower cylinder block, and tighten the bolts in the order indicated in the figure.

37-43 N·m {3.7-4.4kgf·m, 27-31 ft·lbf}

4. Tighten the bolts by turning each 85° - 95° in the sequence as indicated in the figure.

5. Loosen the bolts in the reverse order of tightening.

6. Measure the main journal oil clearance.

• If the clearance exceeds the maximum, replace the main bearing using the main bearing selection table or grind the main journal and install the undersize bearings so that the specified oil clearance is obtained.

0.025-0.045 mm {0.0010-0.0017 in}

0.050 mm {0.0019 in}

mm {in}

Bearing size	Grade	Bearing thickness
		Upper: No.1, 2, 3, 4 Lower: No.1, 2, 3	Lower: No.4
Standard	1	2.494-2.500 {0.09819-0.09842}	2.492-2.498 {0.09812-0.09834}
	2	2.498-2.504 {0.09835-0.09858}	2.496-2.502 {0.09827-0.09850}
	3	2.502-2.508 {0.09851-0.09873}	2.5000-2.5006 {0.09843-0.09844}
0.25 {0.01} undersize	-	2.623-2.629 {0.10327-0.10350}	2.621-2.627 {0.10319-0.10342}

Main bearing selection table

Example of main bearing selection