ENGINE DISASSEMBLY
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3.2.10. Piston pin
1) 1) Wear
z
Measure the amount of wear on the piston pin
at the points as shown.
z
If the measured values are beyond the limit
(0.005 mm or greater), replace the pin.
2) Clearance
z
Measure the clearance between the piston pin
and connecting rod bushing, and replace either
of them, whichever damaged more, if the
measured value is beyond the limit.
3) Condition check
z
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.
3.2.11. Connecting rod
1) Distorsion
z
Check the connecting rod for distortion.
z
As shown in the figure below, install the connecting rod to the connecting rod tester, and check for
distortion using a feeler gauge.
z
If the connecting rod is found distorted, never re-use it but replace with a new one.
2) Holes alignment (parallelism)
z
Measure the alignment of the connecting rod
small bushing hole with connecting rod big end
hole.
z
At this time also, use both connecting rod tester
and feeler gauge.
EA0M4031
Standard Limit
ø
44.995 ~
ø
45.0 mm
ø 44.990 mm or less
EA3M2047
Limit
0.011 mm
EA0M4034
Feeler
gauge
Standard Limit
0.05 mm
0.1 mm or less
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