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CYLINDER AND PISTON
Cylinder bore "C"
Taper limit "T"
Out of round "R"
"C" = Maximum D
"T" = (Maximum D
"R" = (Maximum D
• If out of specification, replace the cylinder,
and replace the piston and piston rings as
set.
2nd step:
• Measure the piston skirt diameter "P" with
a micrometer.
a 8 mm (0.31 in) from the piston bottom edge
• If out of specification, replace the piston
and piston rings as a set.
3rd step:
• Calculate the piston-to-cylinder clearance
with following formula:
Piston-to-cylinder clearance =
• If out of specification, replace the cylinder,
and replace the piston and piston rings as
set.
4 - 45
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ENG
77.00 ~ 77.01 mm
(3.0315 ~ 3.0319 in)
0.05 mm (0.002 in)
0.05 mm (0.002 in)
or D
) –
1
2
(Maximum D
or D
)
5
6
, D
or D
1
3
(Minimum D
, D
or D
2
4
Piston size "P"
76.955 ~ 76.970 mm
Standard
(3.0297 ~ 3.0303 in)
Cylinder bore "C" –
Piston skirt diameter "P"
Piston-to-cylinder clearance:
0.040 ~ 0.065 mm
(0.0016 ~ 0.0026 in)
<Limit>: 0.1 mm (0.004 in)
) –
5
)
6
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