Yamaha VK540EF, Руководство по обслуживанию

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5-8
CYLINDER HEAD AND CYLINDER
ENG
Standard Wear limit
Cylinder bore
(C)
73.00 73.02
mm
(2.874 2.875
in)
73.10 mm
(2.878 in)
Taper (T) –
0.05 mm
(0.002 in)
Out of round
(R)
–
0.01 mm
(0.0004 in)
C = Maximum D
T = (Maximum of D
1
or D
2
) –
(Maximum of D
5
or D
6
)
R = (Maximum of D
1
, D
3
or D
5
) –
(Minimum of D
2
, D
4
or D
6
)
If out of specification, replace cylinder, and
replace piston and piston rings as a set.
2nd step:
Measure the piston skirt diameter (P) with a
micrometer.
a 10 mm (0.39 in) from the bottom edge of the piston
Piston size (standard) (P):
72.94 72.95 mm
(2.871 2.872 in)
If out of specification, replace the piston and
piston rings as a set.
3rd step:
Calculate the piston-to-cylinder clearance
with the following formula:
Piston-to-cylinder clearance =
Cylinder bore (C) –
Piston skirt diameter (P)
If out of specification, rebore or replace cylin-
der, and replace piston and piston rings as a
set.
Piston-to-cylinder clearance:
0.055 0.060 mm
(0.0022 0.0024 in)
Limit 0.1 mm (0.004 in)