(2) Clearance
Measure the clearance between the piston
pin and connecting rod bushing, and
replace either of them, whichever dam-
aged more, if the measured value is
beyond the limit.
(3) 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.
5) Connecting rod inspection
(1) Distorsion
Check the connecting rod for distortion. As shown in the figure below, install the connecting
rod to the connecting rod tester, and check for distortion using a feeler gauge. If the con-
necting rod is found distorted, never re-use it but replace with a new one.
(2) Holes alignment (parallelism)
Measure the alignment of the connecting
rod piston pin bushing holes with
connecting rod big end holes. At this time
also, use both connecting rod tester and
feeler gauge.
(3) Wear
•
Assemble the connecting rod to the crankshaft and measure connecting rod big end side
clearance using a feeler gauge.
•
Assemble the connecting rod to the piston and measure connecting rod small end side
clearance.
•
If the measured values are beyond the limit, replace the connecting rod.
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