PISTON PIN CLEARANCE INSPECTION


BME011011010504

1. Measure each piston pin bore diameter in X and Y directions at the four points (A, B, C, and D) as indicated in the figure.

Standard diameter
21.008-21.012 mm {0.82709-0.82724 in}

2. Measure each connecting rod small end inner diameter in X and Y directions as indicated in the figure.

Standard diameter
21.017-21.031 mm {0.82744-0.82799 in}

3. Measure each piston pin diameter in X and Y directions at the four points (A, B, C and D) as indicated in the figure.

Standard diameter
21.011-21.013 mm {0.82721-0.82728 in}

4. Calculate the piston pin-to-piston pin bore clearance.

• If not as specified, replace the piston, piston pin, piston ring and connecting rod as a single unit or piston pin.
Standard clearance
-0.005-0.001 mm {-0.00019-0.00003 in}

5. Calculate small end-to-piston pin clearance of the connecting rod.

• If small end-to-piston pin clearance of the connecting rod exceeds the maximum clearance, replace the connecting rod or piston pin.
Standard clearance
0.004-0.020 mm {0.00016-0.00078 in}
Maximum clearance
0.035 mm {0.0013 in}