Cylinder block and crank connecting rod mechanisms
80
clearance gauge of plastic line, whereby the journal clearance will be achieved. If the
clearance exceeded the max., value, replace the connecting rod bearing or grind the
crankshaft pin, and use the bearing applicable to the reduced size of crankshaft pin to
meet the standard clearance.
Standard clearance: 0.015～0.048mm{0.0006～0.00191in}
Max.clearance: 0.10mm {0.0039in}
mm{in}
Size of connecting rod bearing Thickness of connecting rod bearing
Standard
1.487～1.499{0.05854～0.05902}
0.25{0.01}Oversize:
1.612～1.624{0.06346～0.06394}
0.50{0.02}Oversize:
1.737～1.749{0.06839～0.06886}
3. As shown in Fig., measure the I/D of each connecting rod small end in the directions
X and Y.
Standard diameter: 18.974～18.985mm{0.7476～0.7474in}
Check of piston and connecting rod
As shown in Fig., check the swing torque. If the large end cannot drop in reliance on the
weight of its own, replace the piston or piston pin.
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