Maintenance
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4) Piston pin inspection
a) Wear
Measure the amount of wear on the
piston pin at the points as shown. The
measured values are beyond the limit
(0.08 mm or greater), replace the pin.
b) Clearance
Measure the clearance between the
piston pin and Piston pin hole, and
replace either of them, whichever
damaged more, if the measured
value is beyond the limit.
c) Condition check
Check the engaged condition of the piston 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.
Standard Limit
41.994
~
42.000
mm 41.94
mm
Standard Limit
0.003 ~ 0.015 mm 0.08 mm
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