Page 2297 of 2898
Lifter guide inner diameter 30.000 - 30.021 (1.1181 - 1.1819)
Clearance between lifter and lifter guide 0.025 - 0.061 (0.0010 - 0.0024)
VALVE GUIDENJEM0078S06Unit: mm (in)
JEM156G
Standard Service
Valve guide Outer diameter 10.023 - 10.034 (0.3946 - 0.3950) 10.223 - 10.234 (0.4025 - 0.4029)
Valve guide Inner diameter (Finished size) 6.000 - 6.018 (0.2362 - 0.2369)
Cylinder head valve guide hole diameter 9.975 - 9.996 (0.3927 - 0.3935) 10.175 - 10.196 (0.4006 - 0.4014)
Interference fit of valve guide 0.027 - 0.059 (0.0011 - 0.0023)
Standard Limit
Stem to guide clearanceIntake 0.020 - 0.053 (0.0008 - 0.0021) 0.08 (0.0031)
Exhaust 0.040 - 0.073 (0.0016 - 0.0029) 0.1 (0.004)
Valve deflection limit0.15 (0.0059)
Projection length10.4 - 10.6 (0.4094 - 0.4173)
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Valve (Cont'd)
EM-163
Page 2298 of 2898
Valve SeatNJEM0079Unit: mm (in)
SEM546G
JEM253G
Standard Service
Cylinder head seat recess diameter (D)Intake 30.000 - 30.016 (1.1181 - 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 interference fitIntake 0.064 - 0.100 (0.0025 - 0.0039)
Exhaust 0.064 - 0.096 (0.0025 - 0.0038)
Valve seat outer diameter (d)Intake 30.080 - 30.100 (1.1842 - 1.1850) 30.580 - 30.600 (1.2039 - 1.2047)
Exhaust 29.080 - 29.096 (1.1449 - 1.1455) 29.580 - 29.596 (1.1646 - 1.1652)
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Valve Seat
EM-164
Page 2299 of 2898
Height (h)Intake 7.0 - 7.1 (0.276 - 0.280) 6.60 - 6.70 (0.2598 - 0.2638)
Exhaust 6.7 - 6.8 (0.264 - 0.268) 6.3 - 6.4 (0.248 - 0.252)
Depth (H)Intake 8.83 - 9.13 (0.3476 - 0.3594)
Exhaust 9.06 - 9.36 (0.3567 - 0.3685)
Depth (L)Intake 36.53 - 36.98 (1.4382 - 1.4559)
Exhaust 36.53 - 37.01 (1.4382 - 1.4571)
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Valve Seat (Cont'd)
EM-165
Page 2300 of 2898
Camshaft and Camshaft Bearing=NJEM0080Unit: mm (in)
Standard Limit
Camshaft journal to bearing clearance 0.045 - 0.086 (0.0018 - 0.0034) 0.045 - 0.086 (0.0018 - 0.0034)
Inner diameter of camshaft bearingNo. 1
30.500 - 30.521 (1.2008 - 1.2016)
No. 2, 3, 4, 5
24.000 - 24.021 (0.9449 - 0.9457)Ð
Outer diameter of camshaft journalNo. 1
30.435 - 30.455 (1.1982 - 1.1990)
No. 2, 3, 4, 5
23.935 - 23.955 (0.9423 - 0.9431)Ð
Camshaft runout [TIR*] Ð 0.02 (0.0008)
Camshaft sprocket runout [TIR*] Less than 0.15 (0.0059) Ð
Camshaft end play 0.070 - 0.148 (0.0028 - 0.0058) 0.24 (0.0094)
*: Total indicator reading
EM671
Cam height ªAºIntake 39.505 - 39.695 (1.5553 - 1.5628)
Exhaust 39.905 - 40.095 (1.5711 - 1.5785)
Wear limit of cam height 0.15 (0.0059)
Valve timing
EM120
Unit: degree
a bcde f
224 212 2 30 ±2 46
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Camshaft and Camshaft Bearing
EM-166
Page 2301 of 2898

Cylinder BlockNJEM0081Unit: mm (in)
JEM207G
Surface flatnessStandardLess than 0.03 (0.0012)
Limit0.04 (0.0016)
Cylinder bore Inner diameterStandardGrade No. 1 86.000 - 86.010 (3.3858 - 3.3862)
Grade No. 2 86.010 - 86.020 (3.3862 - 3.3866)
Grade No. 3 86.020 - 86.030 (3.3866 - 3.3870)
Wear limit 0.07 (0.0028)
Out-of-round (X þ Y)Less than 0.015 (0.0006)
Taper (AþBþC)Less than 0.010 (0.0004)
Main journal inner
diameter grade
(Without bearing)Grade No. 0
Grade No. 1
Grade No. 266.654 - 66.663 (2.6242 - 2.6245)
66.663 - 66.672 (2.6245 - 2.6249)
66.672 - 66.681 (2.6249 - 2.6252)
Difference in inner
diameter between
cylindersLimitLess than 0.05 (0.0020)
Piston, Piston Ring and Piston PinNJEM0082AVAILABLE PISTONNJEM0082S01Unit: mm (in)
SEM882E
Piston skirt diameter ªAº StandardGrade No. 1 85.920 - 85.930 (3.3827 - 3.3831)
Grade No. 2 85.930 - 85.940 (3.3831 - 3.3835)
Grade No. 3 85.940 - 85.950 (3.3835 - 3.3839)
0.25 (0.0098) oversize (Service) 86.170 - 86.200 (3.3925 - 3.3937)
0.50 (0.0197) oversize (Service) 86.420 - 86.450 (3.4024 - 3.4035)
ªaº dimension58.0 (2.28)
Piston pin hole diameter27.997 - 28.005 (1.1022 - 1.1026)
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Cylinder Block
EM-167
Page 2302 of 2898

Piston clearance to cylinder block 0.070 -0.090 (0.0028 - 0.0035)
PISTON RINGNJEM0082S02Unit: mm (in)
Standard Limit
Side clearanceTop 0.120 - 0.180 (0.0047 - 0.0071) 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) Ð
End gapTop 0.20 - 0.35 (0.0079 - 0.0138) 1.0 (0.039)
2nd 0.39 - 0.54 (0.0154 - 0.0213) 1.0 (0.039)
Oil (rail ring) 0.25 - 0.50 (0.0098 - 0.0197) 1.0 (0.039)
PISTON PINNJEM0082S03Unit: mm (in)
Piston pin outer diameter27.994 - 28.000 (1.1021 - 1.1024)
Interference fit of piston pin to piston 0.002 - 0.006 (0.0001 - 0.0002)
Piston pin to connecting rod bushing clearanceStandard 0.026 - 0.044 (0.0010 - 0.0017)
Limit 0.057 (0.0022)
*: Values measured at ambient temperature of 20ÉC (68ÉF)
Connecting RodNJEM0083Unit: mm (in)
Center distance157.5 (6.201)
Bend [per 100 (3.94)] Limit 0.12 (0.0047)
Torsion [per 100 (3.94)] Limit 0.12 (0.0047)
Connecting rod small end inner diameter 30.080 - 31.000 (1.1842 - 1.2205)
Piston pin 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 0.200 - 0.350 (0.0079 - 0.0138)
Limit 0.4 (0.016)
*: After installing in connecting rod
CrankshaftNJEM0084Unit: mm (in)
Main journal dia. ªDmº gradeGrade No. 0
Grade No. 1
Grade No. 262.967 - 62.975 (2.4790 - 2.4793)
62.959 - 62.967 (2.4787 - 2.4790)
62.951 - 62.959 (2.4784 - 2.4787)
Pin journal dia. ªDpºGrade No. 0 51.968 - 51.974 (2.0460 - 2.0462)
Grade No. 1 51.961 - 51.968 (2.0457 - 2.0460)
Grade No. 2 51.954 - 51.961 (2.0454 - 2.0457)
Center distance ªrº46.97 - 47.03 (1.8492 - 1.8516)
Out-of-round (X þ Y) Standard/Limit Less than 0.003 (0.0001)/Less than 0.005 (0.0002)
Taper (A þ B) Standard/Limit Less than 0.003 (0.0001)/Less than 0.005 (0.0002)
Runout [TIR*]Standard Less than 0.05 (0.0020)
Limit Less than 0.10 (0.0039)
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Piston, Piston Ring and Piston Pin (Cont'd)
EM-168
Page 2303 of 2898

Free end playStandard 0.10 - 0.25 (0.0039 - 0.0098)
Limit 0.30 (0.0118)
SEM645EM715
*: Total indicator reading
Available Main BearingNJEM0085
SEM255G
Grade number Thickness ªTº mm (in) Width ªWº mm (in) Identification color
0 1.816 - 1.820 (0.0715 - 0.0717)
19.9 - 20.1 (0.783 - 0.791)Black
1 1.820 - 1.824 (0.0717 - 0.0718) Red or Brown
2 1.824 - 1.828 (0.0718 - 0.0720) Green
3 1.828 - 1.832 (0.0720 - 0.0721) Yellow
4 1.832 - 1.836 (0.0721 - 0.0723) Blue
UNDERSIZENJEM0085S01Unit: mm (in)
Thickness Main journal diameter ªDmº
0.25 (0.0098) 1.949 - 1.953 (0.0767 - 0.0769)Grind so that bearing clearance is the specified
value.
Available Connecting Rod BearingNJEM0086CONNECTING ROD BEARINGNJEM0086S01
Grade number Thickness ªTº mm (in) Width ªWº mm (in) Identification color (mark)
0 1.492 - 1.496 (0.0587 - 0.0589)
22.9 - 23.1
(0.902 - 0.909)Black
1 1.496 - 1.500 (0.0589 - 0.0591) Brown
2 1.500 - 1.504 (0.0591 - 0.0592) Green
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Crankshaft (Cont'd)
EM-169
Page 2304 of 2898
UNDERSIZENJEM0086S02Unit: mm (in)
Thickness Crank pin journal diameter ªDpº
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)
Miscellaneous ComponentsNJEM0087Unit: mm (in)
Flywheel runout [TIR]*Less than 0.15 (0.0059)
*: Total indicator reading
BEARING CLEARANCENJEM0087S01Unit: mm (in)
Main bearing clearanceStandard 0.039 - 0.066 (0.0015 - 0.0026)
Limit 0.10 (0.0039)
Connecting rod bearing clearanceStandard 0.031 - 0.061 (0.0012 - 0.0024)
Limit 0.09 (0.0035)
SERVICE DATA AND SPECIFICATIONS (SDS)YD
Available Connecting Rod Bearing (Cont'd)
EM-170