CYLINDER BLOCK INSPECTION/REPAIR [MZR-CD 2.2]

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1. Measure the distortion of the cylinder block top surface in seven directions as shown in the figure.

• If it exceeds the maximum specification, replace the cylinder block.

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Cylinder block maximum distortion, head gasket side

X direction : 0.01 mm {0.0004 in}

Y direction : 0.03 mm {0.0012 in}

2. Measure the cylinder bores in X and Y directions at three levels (A,B and C) in each cylinder as shown.

• If the cylinder bore exceeds the wear limit, replace the cylinder block or rebore the cylinder and install the oversize pistons so that the specified piston-to-cylinder clearance is obtained.

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Note

• Base the boring diameter on the diameter of an oversize piston. All cylinders must have the same diameter.

Cylinder bore diameter

STD: 86.000—86.022 mm {3.3859—3.3866 in}

O.S. 0.25 mm {0.01 in}: 86.250—86.272 mm {3.3957—3.3965 in}

O.S. 0.50 mm {0.02 in}: 86.500—86.522 mm {3.4056—3.4063 in}

Cylinder wear limit

0.15 mm {0.006 in}