0C-2 Service Data:
Cylinder + Piston + Piston Ring
Unit: mm (in)
Conrod + Crankshaft
Unit: mm (in)
Item Standard Limit
Compression pressure 1 400 – 1 800 kPa (14 – 18 kgf/cm
2
, 199 – 256 psi)
1 000 kPa
(10 kgf/cm
2
, 142
psi)
Compression pressure difference —
200 kPa
(2 kgf/cm
2
, 28 psi)
Piston-to-cylinder clearance 0.035 – 0.045 (0.0014 – 0.0018) 0.120 (0.0047)
Cylinder bore 81.000 – 81.015 (3.1890 – 3.1896)
No nicks or
Scratches
Piston diam.
80.960 – 80.975 (3.1874 – 3.1880)
Measure 15 mm (0.6 in) from the skirt end.
80.880 (3.1842)
Cylinder distortion — 0.20 (0.008)
Piston ring free end gap
1st — Approx. 6.5 (0.26) 5.2 (0.20)
2nd 2T Approx. 9.0 (0.35) 7.2 (0.28)
Piston ring end gap
1st —
0.06 – 0.18 (0.002 – 0.007) 0.50 (0.020)
2nd 2T
Piston ring-to-groove clearance
1st — 0.180 (0.0071)
2nd — 0.150 (0.0059)
Piston ring groove width
1st
0.83 – 0.85 (0.0327 – 0.0335)
1.30 – 1.32 (0.0512 – 0.0520)
—
2nd 1.01 – 1.03 (0.0398 – 0.0406) —
Oil 2.01 – 2.03 (0.0791 – 0.0799) —
Piston ring thickness
1st
0.76 – 0.81 (0.0299 – 0.0319)
1.08 – 1.10 (0.0425 – 0.0433)
—
2nd 0.97 – 0.99 (0.0382 – 0.0390) —
Piston pin bore 18.002 – 18.008 (0.7087 – 0.7090) 18.030 (0.7098)
Piston pin O.D. 17.996 – 18.000 (0.7085 – 0.7087) 17.980 (0.7079)
Item Standard Limit
Conrod small end I.D. 18.010 – 18.018 (0.7091 – 0.7094) 18.040 (0.7102)
Conrod big end side clearance 0.10 – 0.20 (0.004 – 0.008) 0.3 (0.012)
Conrod big end width 20.95 – 21.00 (0.825 – 0.827) —
Crank pin width 21.10 – 21.15 (0.831 – 0.833) —
Conrod big end oil clearance 0.032 – 0.056 (0.0013 – 0.0022) 0.080 (0.0031)
Crank pin O.D. 37.976 – 38.000 (1.4951 – 1.4960) —
Crankshaft journal oil clearance 0.010 – 0.028 (0.0004 – 0.0011) 0.080 (0.0031)
Crankshaft journal O.D. 39.982 – 40.000 (1.5741 – 1.5748) —
Crankshaft thrust bearing thickness
Right side 2.425 – 2.450 (0.0955 – 0.0965) —
Left side 2.350 – 2.500 (0.0925 – 0.0984) —
Crankshaft thrust clearance 0.055 – 0.110 (0.0022 – 0.0043) —
Crankshaft runout — 0.05 (0.002)
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