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CYLINDER BLOCK
EM-257
[VK45DE]
C
D
E
F
G
H
I
J
K
L
M
A
EM
Revision: 2004 November 2004 FX35/FX45
● When replacing piston and piston pin assembly, refer to EM-260, "PISTON TO CYLINDER BORE
CLEARANCE" .
NOTE:
● Piston is available together with piston pin as assembly.
● Piston pin (piston pin hole) grade is provided only for the parts installed at the plant. For service parts,
no piston pin grades can be selected. (Only “0” grade is available.)
PISTON RING SIDE CLEARANCE
● Measure side clearance of piston ring and piston ring groove
with feeler gauge.
● If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit,
replace piston also.
PISTON RING END GAP
● Make sure that cylinder bore inner diameter is within specifica-
tion. Refer to EM-260, "
Cylinder Bore Inner Diameter" .
● Lubricate with new engine oil to piston and piston ring, and then
insert piston ring until middle of cylinder with piston, and mea-
sure piston ring end gap with feeler gauge.
● If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit,
re-bore cylinder and use oversize piston and piston rings.
Standard:
Top ring : 0.045 - 0.080 mm (0.0018 - 0.0031 in)
2nd ring : 0.030 - 0.070 mm (0.0012 - 0.0028 in)
Oil ring : 0.065 - 0.135 mm (0.0026 - 0.0053 in)
Limit:
Top ring : 0.11 mm (0.0043 in)
2nd ring : 0.1 mm (0.004 in)
SEM024AA
Standard:
Top ring : 0.22 - 0.32 mm (0.0087 - 0.0126 in)
2nd ring : 0.22 - 0.32 mm (0.0087 - 0.0126 in)
Oil ring : 0.20 - 0.60 mm (0.0079 - 0.0236 in)
Limit:
Top ring : 0.56 mm (0.0220 in)
2nd ring : 0.56 mm (0.0220 in)
Oil ring : 0.96 mm (0.0378 in)
PBIC0118E
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