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1.Install the main bearing cap. (See CYLINDER BLOCK ASSEMBLY (I).)

2.Measure the crankshaft end play.

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• If it exceeds the specification, replace the thrust bearing or crankshaft so that the specified end play is obtained.

Crankshaft end play (Standard)

0.22—0.45 mm {0.0087—0.0177 in}

Crankshaft end play (Maximum)

0.55 mm {0.0216 in}

3.Remove the main bearing cap. (See CYLINDER BLOCK DISASSEMBLY (II).)

4.Measure the crankshaft runout.

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• If it exceeds the specification, replace the crankshaft.

Crankshaft runout (Maximum)

0.05 mm {0.0019 in}

5.Measure the journal diameter in X and Y directions at the two points (A and B) as indicated in the figure.

• If it exceeds the specification, replace the crankshaft or grind the journal and install the undersize bearing.

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Main journal bearing size

STD: 51.980—52.000 mm {2.0464—2.0472 in}

OS0.25: 51.730—51.750 mm {2.0366—2.0373 in}

OS0.50: 51.480—51.500 mm {2.0268—2.0275 in}

Main journal out of round (Maximum)

0.05 mm {0.0019 in}

Crank pin journal diameter [LF]

STD: 46.980—47.000 mm {1.8497—1.8503 in}

OS0.25: 46.730—46.750 mm {1.8398—1.8405 in}

OS0.50: 46.480—46.500 mm {1.8300—1.8307 in}

Crank pin journal diameter [L3]

STD: 49.980—50.000 mm {1.9677—1.9685 in}

OS0.25: 49.730—49.750 mm {1.9579—1.9586 in}

OS0.50: 49.480—49.500 mm {1.9481—1.9488 in}

Crank pin out of round (Maximum)

0.05 mm {0.0019 in}

6.Install the main bearing caps and crankshaft.

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

8.Install the main bearing caps and cylinder block. (See CYLINDER BLOCK ASSEMBLY (I).)

9.Remove the main bearing caps. (See CYLINDER BLOCK DISASSEMBLY (II).)

10.Measure the main journal oil clearance.

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

Main journal oil clearance (Standard)

0.019—0.035 mm {0.0007—0.0013 in}

Main journal oil clearance (Maximum)

0.10 mm {0.0039 in}

Main bearing size (UPPER)

STD: 2.501—2.522 mm {0.0985—0.0992 in}

OS0.25: 2.623—2.629 mm {0.1033—0.1035 in}

OS0.50: 2.748—2.754 mm {0.1082—0.1084 in}

Main bearing size (LOWER)

STD: 2.501—2.529 mm {0.0985—0.0995 in}

OS0.25: 2.624—2.630 mm {0.1034—0.1035 in}

OS0.50: 2.749—2.755 mm {0.1083—0.1084 in}