MECHANICAL
01-10–34
PISTON PIN INSPECTION
id011000507500
Caution
•
If the piston or piston pin is replaced, replace the piston, piston pin and the snap ring as a single
component.
1. Measure the piston pin outer diameter using the
micrometer. Measurement positions total eight
and are in the X and Y directions, at four points
(A, B, C, and D) as shown in the figure.
Standard piston pin outer diameter
20.995—21.000 mm {0.82658—0.82677 in}
2. Measure the piston pin hole diameter using the
caliper gauge. Measurement positions total eight
and are in the X and Y directions, at four points
(A, B, C, and D) as shown in the figure.
Standard piston pin hole diameter
21.004—21.008 mm {0.82693—0.82708 in}
3. Calculate the clearance between the piston pin
hole diameter and the piston pin outer diameter.
•
If it is not within the specification, replace the
piston or the piston pin.
Standard clearance between piston pin hole
diameter and piston pin outer diameter
0.004—0.013 mm {0.0002—0.0005 in}
4. Measure the inner diameter on the small end of
the connecting rod using the caliper gauge in the
X and Y directions as shown in the figure.
Standard connecting rod small end inner
diameter
21.002—21.013 mm {0.82686—0.82728 in}
5. Calculate the clearance between the inner
diameter on the small end of the connecting rod
and the piston pin outer diameter.
•
If it is not within the specification, replace the
connecting rod or the piston pin.
Standard clearance between connecting rod small end inner diameter and piston pin outer diameter
0.002—0.018 mm {0.00008—0.00070 in}
End Of Sie
A
B
C
D
X
Y
adj2224e255
A
B
C
D
X
Y
bpe1ze00000085
X
Y
CONNECTING ROD
bpe2ue00000092
1A36-1U-12L.book 34 ページ ２０１２年１２月１０日 月曜日 午前９時２５分
