HAIMA 7 - Page 114

Cylinder block and crank connecting rod mechanisms
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5. Place manually the piston ring into the cylinder, use the piston to push the piston ring
to the stroke end of cylinder bore.
6. Measure, with a feeler, the gap of each piston ring. Replace the piston ring when
necessary.
Standard notch clearance
1
st
ring: 0.20～0.35mm{0.008～0.014in}
2
nd
ring: 0.30～0.45mm{0.012～0.018in}
Oil ring: 0.20～0.50mm{0.008～0.020in}
Max.gap: 1.0mm{0.039in}
7. As shown in Fig., measure the diameter of each piston pin hole at 4 points as A, B, C
and D in the directions of X and Y.
Standard diameter: 19.010～19.015mm{0.7484～0.7486in}
8. As shown in Fig., measure the diameter of each piston pin at 4 points as A, B, C and
D in the directions of X and Y.
Standard diameter: 19.002～19.005mm{0.7481～0.7482in}