Page 1521 of 3171
SERVICE DATA AND SPECIFICATIONS (SDS)
EM-139
C
D
E
F
G
H
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MA
EM
Valve Seat
Unit: mm (in)
Items Standard Oversize [0.5 (0.02)] (Service)
Cylinder head seat (1) recess diam-
eter “D”Intake 30.000 - 30.016 (1.1811 - 1.1817) 30.500 - 30.516 (1.2008 - 1.2014)
Exhaust 29.000 - 29.016 (1.1417 - 1.1424) 29.500 - 29.516 (1.1614 - 1.1620)
Valve seat outer diameter “d”Intake (A) 30.080 - 30.100 (1.1842 - 1.1850) 30.580 - 30.600 (1.2039 - 1.2047)
Exhaust (B) 29.080 - 29.096 (1.1449 - 1.1455) 29.580 - 29.596 (1.1646 - 1.1652)
Valve seat interference fitIntake (A) 0.064 - 0.100 (0.0025 - 0.0039)
Exhaust (B) 0.064 - 0.096 (0.0025 - 0.0038)
Diameter “d1”Intake (A) 27.15 - 27.65 (1.0689 - 1.0886) 26.05 - 26.55 (1.0256 - 1.0453)
Exhaust (B) 24.95 - 25.45 (0.982 - 1.0020) 24.15 - 24.65 (0.9508 - 0.9705)
PBIC4054E
JEM253G
Page 1522 of 3171

EM-140
SERVICE DATA AND SPECIFICATIONS (SDS)
CAMSHAFT
Unit: mm (in)
*: Total indicator readingDiameter “d2”Intake (A) 26.00 - 26.50 (1.0236 - 1.0433) —
Exhaust (B) —
Diameter “d3”Intake (A) 25.3 - 25.7(0.996 - 1.012)
Exhaust (B) 23.3 - 23.7 (0.917 - 0.933)
Angle “a”43°30¢-46°30¢
Height “h1”Intake (A) 7.0 - 7.1 (0.276 - 0.280) 6.6 - 6.7 (0.260 - 0.264)
Exhaust (B) 6.7 - 6.8 (0.264 - 0.268) 6.3 - 6.4 (0.248 - 0.252)
Height “h2”Intake (A) 2.23 - 2.43 (0.0878 - 0.0957) 2.13 - 2.53 (0.0839 - 0.0996)
Exhaust (B) 2.76 - 2.96 (0.1087 - 0.1165) 2.66 - 3.06 (0.1047 - 0.1205)
Depth “H”Intake 8.83 - 9.13 (0.3476 - 0.3594)
Exhaust 9.06 - 9.36 (0.3567 - 0.3685)
Projection (L)Intake 36.53 - 36.98 (1.4382 - 1.4559)
Exhaust 36.53 - 37.01 (1.4382 - 1.4571)
Item Standard Limit
Camshaft journal oil clearance 0.045 - 0.086 (0.0018 - 0.0034)
— Camshaft bracket inner diameterNo.1 30.500 - 30.521 (1.2008 - 1.2016)
No. 2, 3, 4, 5 24.000 - 24.021 (0.9449 - 0.9457)
Camshaft journal outer diameterNo. 1 30.435 - 30.455 (1.1982 - 1.1990)
No. 2, 3, 4, 5 23.935 - 23.955 (0.9423 - 0.9431)
Camshaft runout [TIR*] — 0.02 (0.0008)
Camshaft sprocket runout [TIR*] — 0.15 (0.0059)
Camshaft end play 0.070 - 0.148 (0.0028 - 0.0058) 0.24 (0.0094)
Cam height “A”Intake 39.505 - 39.695 (1.5553 - 1.5628)
Exhaust 39.905 - 40.095 (1.5711 - 1.5785)
SEM671
Page 1523 of 3171

SERVICE DATA AND SPECIFICATIONS (SDS)
EM-141
C
D
E
F
G
H
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MA
EM
CYLINDER BLOCK
Unit: mm (in)
PISTON, PISTON RING AND PISTON PIN
Available Piston
Unit: mm (in) Top surface distortionStandard Less than 0.03 (0.0012)
Limit 0.1 (0.004)
Cylinder bore Inner diameterStandardGrade No. 1 89.000 - 89.010 (3.5039 - 3.5043)
Grade No. 2 89.010 - 89.020 (3.5043 - 3.5047)
Grade No. 3 89.020 - 89.030 (3.5047 - 3.5051)
Wear limit 0.07 (0.0028)
Out-of-round (Difference between X and Y)
Limit0.015 (0.0006)
Taper (Difference between A and C) 0.010 (0.0004)
Main bearing housing inner diameter (Without bearing) 66.654 - 66.681 (2.6242 - 2.6252)
Difference in inner diameter
between cylindersLimit Less than 0.05 (0.0020)
SEM899G
Piston outer diameter “A”S
t
a
n
d
a
r
dGrade No. 1 88.928 - 88.942 (3.5011 - 3.5016)
Grade No. 2 88.938 - 88.952 (3.5015 - 3.5020)
Grade No. 3 88.948 - 88.962 (3.5019 - 3.5024)
0.25 (0.0098) O/S (Service) 89.188 - 89.202 (3.5113 - 3.5119)
0.50 (0.0197) O/S (Service) 89.438 - 89.452 (3.5212 - 3.5217)
“a” dimension11.0 (0.43)
MBIA0026E
Page 1524 of 3171
EM-142
SERVICE DATA AND SPECIFICATIONS (SDS)
Piston pin bore diameter 28.003 - 28.009 (1.1025 - 1.1027)
Piston to cylinder bore clearance 0.058 - 0.082 (0.0023 - 0.0032)
Page 1525 of 3171
SERVICE DATA AND SPECIFICATIONS (SDS)
EM-143
C
D
E
F
G
H
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EM
Piston Ring
Unit: mm (in)
Piston Pin
Unit: mm (in) Item Standard Limit
Side clearanceTop 0.050 - 0.090 (0.0020 - 0.0035) 0.2 (0.008)
2nd 0.050 - 0.090 (0.0020 - 0.0035) 0.1 (0.004)
Oil ring 0.030 - 0.070 (0.0012 - 0.0028) —
End gapTop 0.21 - 0.28 (0.0083 - 0.0110)
1.0 (0.039) 2nd 0.32 - 0.47 (0.0126 - 0.0185)
Oil ring 0.30 - 0.55 (0.0118 - 0.0217)
Piston pin outer diameter 27.995 - 28.000 (1.1022 - 1.1024)
Piston to piston pin clearance 0.003 - 0.014 (0.0001 - 0.0006)
Connecting rod bushing clearanceStandard 0.026 - 0.043 (0.0010 - 0.0017)
Limit 0.057 (0.0022)
Page 1526 of 3171
EM-144
SERVICE DATA AND SPECIFICATIONS (SDS)
CONNECTING ROD
Unit: mm (in)
*: After installing in connecting rod
CRANKSHAFT
Unit: mm (in)
*: Total indicator readingCenter distance154.5 (6.083)
Bend [per 100 (3.94)] Limit 0.12 (0.0047)
Torsion [per 100 (3.94)] Limit 0.12 (0.0047)
Connecting rod bushing inner diameter* 28.026 - 28.038 (1.1034 - 1.1039)
Connecting rod big end inner diameter* 55.000 - 55.013 (2.1654 - 2.1659)
Side clearanceStandard 0.20 - 0.35 (0.0079 - 0.0138)
Limit 0.40 (0.0157)
Main journal dia. “Dm” 62.951 - 62.975 (2.4784 - 2.4793)
Pin journal dia. “Dp” 51.954 - 51.974 (2.0454 - 2.0462)
Center distance “r” 49.97 - 50.03 (1.9673 - 1.9697)
Out-of-round (Difference between X
and Y)Standard 0.003 (0.0001)
Limit 0.005 (0.0002)
Taper (Difference between A and B)Standard 0.003 (0.0001)
Limit 0.005 (0.0002)
Runout [TIR*]Standard 0.05 (0.0020)
Limit 0.10 (0.0039)
End playStandard 0.10 - 0.25 (0.0039 - 0.0098)
Limit 0.30 (0.0118)
SEM645SBIA0535E
Page 1527 of 3171

SERVICE DATA AND SPECIFICATIONS (SDS)
EM-145
C
D
E
F
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EM
AVAILABLE MAIN BEARING
Main bearing
Unit: mm (in)
Undersize
Unit: mm (in)
AVAILABLE CONNECTING ROD BEARING
Connecting Rod Bearing
Unit: mm (in)
Undersize
Unit: mm (in)
MISCELLANEOUS COMPONENTS
Flywheel
Unit: mm (in)
*: Total indicator readingGrade number Thickness “T” Width “W” Identification color
STD 0 1.816 - 1.820 (0.0715 - 0.0717)
19.9 - 20.1 (0.783 - 0.791)Black
STD 1 1.820 - 1.824 (0.0717 - 0.0718) Brown
STD 2 1.824 - 1.828 (0.0718 - 0.0720) Green
STD 3 1.828 - 1.832 (0.0720 - 0.0721) Yellow
STD 4 1.832 - 1.836 (0.0721 - 0.0723) Blue
SEM255G
Size Thickness Main journal diameter “Dm”
0.25 (0.0098) 1.949 - 1.953 (0.0767 - 0.0769)Grind so that bearing clearance is the
specified value.
Grade number Thickness “T” Width “W” Identification color (mark)
STD 0 1.492 - 1.496 (0.0587 - 0.0589)
22.9 - 23.1
(0.902 - 0.909)Black
STD 1 1.496 - 1.500 (0.0589 - 0.0591) Brown
STD 2 1.500 - 1.504 (0.0591 - 0.0592) Green
Size Thickness Crank pin journal diameter “Dp”
0.08 (0.0031) 1.536 - 1.540 (0.0605 - 0.0606)
Grind so that bearing clearance is the
specified value. 0.12 (0.0047) 1.556 - 1.560 (0.0613 - 0.0614)
0.25 (0.0098) 1.621 - 1.625 (0.0638 - 0.0640)
Flywheel deflection [TIR]* Standard 0.45 (0.0177) or less
Page 1528 of 3171
EM-146
SERVICE DATA AND SPECIFICATIONS (SDS)
Bearing Clearance
Unit: mm (in)
Main bearing oil clearance Standard 0.047 - 0.077 (0.0019 - 0.0030)
Connecting rod bearing oil
clearanceStandard 0.039 - 0.070 (0.0015 - 0.0028)