0C-6 Service Data:
Conrod + Crankshaft
Unit: mm (in)
Oil Pump
Clutch
Unit: mm (in)
Drive Train
Unit: mm (in) Except ratio
Piston diam.
81.930 – 81.945 (3.2256 – 3.2262)
Measure at 15 mm (0.6 in) from the skirt end.
81.880 (3.2236)
Cylinder distortion — 0.05 (0.002)
Piston ring free end gap
1st R Approx. 8.9 (0.35) 7.1 (0.28)
2nd R Approx. 10.4 (0.41) 8.3 (0.33)
Piston ring end gap
1st 0.15 – 0.27 (0.006 – 0.011) 0.50 (0.020)
2nd 0.15 – 0.27 (0.006 – 0.011) 0.50 (0.020)
Piston ring to groove clearance
1st — 0.180 (0.0071)
2nd — 0.150 (0.0059)
Piston ring groove width
1st 1.01 – 1.03 (0.0398 – 0.0406) —
2nd 1.01 – 1.03 (0.0398 – 0.0406) —
Oil 2.01 – 2.03 (0.0791 – 0.0799) —
Piston ring thickness
1st 0.970 – 0.990 (0.0382 – 0.0390) —
2nd 0.970 – 0.990 (0.0382 – 0.0390) —
Piston pin bore 20.002 – 20.008 (0.7875 – 0.7877) 20.030 (0.7886)
Piston pin O.D. 19.996 – 20.000 (0.7872 – 0.7874) 19.980 (0.7866)
Item Standard Limit
Conrod small end I.D. 20.006 – 20.014 (0.7876 – 0.7879) 20.040 (0.7890)
Conrod deflection — 3.0 (0.12)
Conrod big end side clearance 0.00 – 0.55 (0.000 – 0.022) 1.0 (0.04)
Conrod big end width 21.95 – 22.00 (0.864 – 0.866) —
Conrod web to web width 59.9 – 60.1 (2.36 – 2.37) —
Crankshaft runout — 0.080 (0.0031)
Item Standard Limit
Oil pressure (at 60 °C, 140 °F)
Above 60 kPa (0.6 kgf/cm
2
, 9 psi)
Below 100 kPa (1.0 kgf/cm
2
, 14 psi)
at 3 000 r/min
—
Item Standard Limit
Clutch release screw 1/16 – 1/8 turns back —
Drive plate thickness 2.92 – 3.08 (0.115 – 0.121) 2.62 (0.103)
Drive plate claw width 13.85 – 13.95 (0.545 – 0.549) 13.05 (0.514)
Driven plate distortion — 0.10 (0.004)
Clutch spring free length 37.44 (1.47) 35.6 (1.40)
Clutch wheel I.D. 140.0 – 140.2 (5.512 – 5.520) 140.5 (5.53)
Clutch shoe thickness —
No groove at any
part
Clutch engagement r/min 1 500 – 2 000 r/min —
Clutch lock-up r/min 3 300 – 3 900 r/min —
Item Standard Limit
Item Standard Limit
Primary reduction ratio 2.392 (67/28) —
Secondary reduction ratio 1.133 (17/15) —
Final reduction
ratio
Front 3.600 (36/10) —
Rear 3.600 (36/10) —
Transfer
reduction ratio
Low 2.435 (35/13 x 19/21) —
High 1.296 (35/27) —
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