Mitsubishi S3Q2 User Manual

SERVICE DATA
2-6
Crankshaft
Crankpin outside diameter
ø 58
[2.28]
57.950 to 57.970
[2.2815 to 2.2823]
Crankpin journal outside diameter
ø 65
[2.56]
64.965 to 64.985
[2.5577 to 2.5585]
Distance between centers of journal and
crankpin
51.5
[2.028]
51.46 to 51.54
[2.0260 to 2.0291]
Parallelism between journal and crank-
pin
Pin maximum
defection:
0.01 [0.0004]
or less
Roundness of journals and crankpins
0.01
[0.0004] or less
0.03
[0.0012]
Cylindericity of journals and crankpins
0.01
[0.0004] or less
0.03
[0.0012]
Fillet radius of pin
R3
[0.12]
±0.2
[0.008]
Fillet radius of journals
R3
[0.12]
±0.2
[0.008]
Runout (TIR)
0.04
[0.0016] or less
0.10
[0.0039]
TIR
End play
0.100 to 0.204
[0.0039 to 0.0080]
0.300
[0.0118]
Main bearing
Crankcase hole
(main bearing
lower hole)
Inside diameter
ø 69
[2.72]
69.000 to 69.019
[2.7165 to 2.7173]
When main bearing cap is
tightened.
Circularity
0.02
[0.0008] or less
Coaxiality
0.05
[0.0020] or less
Clearance between main bearing and
crankshaft journal (oil clearance)
0.035 to 0.085
[0.0014 to 0.0033]
0.200
[0.0079]
Thrust bearing width (cap width)
23
[0.91]
22.979 to 23.000
[0.9047 to 0.9055]
Crankcase
Flatness of top surface
0.05
[0.0020] or less
0.20
[0.0079]
Reface minimum thickness.
Cylinder inside
diameter
STD
88
[3.46]
88.000 to 88.035
[3.4646 to 3.4659]
Standard value
+0.2 [+0.008]
0.25
[-0.0098] OS
88.25
[3.4744]
88.250 to 88.285
[3.4744 to 3.4758]
0.50
[-0.0197] OS
88.50
[3.4842]
88.500 to 88.535
[3.4842 to 3.4856]
Cylindricality of cylinder inside
diameter
0.015
[0.0006] or less
Table 2-2 Maintenance service data table - Basic engine (5 / 5) Unit: mm [in.]
Inspection point Nominal Standard Limit Remark

Mitsubishi S3Q2 Specifications

General

Brand	Mitsubishi
Model	S3Q2
Category	Engine
Language	English