4) With a tension tester, measure piston
ring tension. Replace the piston ring if
the measured value is beyond the limit.
3.2.10. Piston pin
1) Measure the amount of wear on the pis-
ton pin
(1) Measure the amount of wear on the
piston pin at the points as shown.
The measured values are beyond
the limit(0.005mm or greater),
replace the pin.
(2) Measure the clearance between the
piston pin and conn. rod bushing,
and replace either of them, which
ever damaged more, if the mea-
sured value is beyond the
limit(0.011mm).
2) Check the engaged condition of the pis-
ton and piston pin. If it is possible to
force the pin into the piston heated with
piston heater, the piston is normal.
When replacing the piston, be sure to
replace the piston pin together.
Dimensions
Standard(mm) Limit(mm)
Descriptions
Top ring -
2nd ring 0.07~0.102 0.15
Oil ring 0.05~0.085 0.15
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