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1.Measure the tappet hole inner diameter in X and Y directions at the two points (A and B) shown in the figure.

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Standard tappet bore diameter

31.000—31.030 mm {1.2205—1.2216 in}

2.Measure the tappet body outer diameter in X and Y directions at the two points (A and B) shown in the figure.

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Standard tappet body outer diameter

30.970—30.980 mm {1.2193—1.2196 in}

3.Subtract the tappet body outer diameter from the tappet hole inner diameter.

• If it exceeds the specification, replace the tappet or cylinder head.

Standard clearance between tappet and tappet bore

0.02—0.06 mm {0.001—0.002 in}

Maximum clearance between tappet and tappet bore

0.15 mm {0.0059 in}