0C-2 Service Data:
Cylinder + Piston + Piston Ring
Unit: mm (in)
Conrod + Crankshaft
Unit: mm (in)
Oil Pump
Clutch
Unit: mm (in)
Item Standard Limit
Compression pressure
(Automatic-decomp. actuated)
Approx. 1 000 kPa (10.0 kgf/cm
2
, 142 psi) —
Piston-to-cylinder clearance 0.030 – 0.040 (0.0012 – 0.0016) 0.120 (0.0047)
Cylinder bore 104.000 – 104.015 (4.0945 – 4.0951)
Nicks or
Scratches
Piston diam.
103.965 – 103.980 (4.0931 – 4.0937)
Measure at 15 mm (0.6 in) from the skirt end.
103.880 (4.0898)
Cylinder distortion — 0.05 (0.002)
Piston ring free end gap
1st R Approx. 13.1 (0.52) 10.5 (0.41)
2nd RN Approx. 14.6 (0.57) 11.7 (0.46)
Piston ring end gap
1st R 0.10 – 0.25 (0.004 – 0.010) 0.50 (0.020)
2nd RN 0.10 – 0.25 (0.004 – 0.010) 0.50 (0.020)
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 I.D. 23.002 – 23.008 (0.9056 – 0.9058) 23.030 (0.9067)
Piston pin O.D. 22.992 – 23.000 (0.9052 – 0.9055) 22.980 (0.9047)
Item Standard Limit
Conrod small end I.D. 23.006 – 23.014 (0.9057 – 0.9061) 23.040 (0.9071)
Conrod deflection — 3.0 (0.12)
Conrod big end side clearance 0.10 – 0.75 (0.004 – 0.030) 1.0 (0.04)
Conrod big end width 24.95 – 25.00 (0.982 – 0.984) —
Crank web to web width 72.9 – 73.1 (2.87 – 2.88) —
Crankshaft runout — 0.08 (0.003)
Item Standard Limit
Oil pressure (at 60 °C, 140 °F)
140 – 180 kPa
(1.4 – 1.8 kgf/cm
2
, 20 – 26 psi)
at 3 000 r/min
—
Item Standard Limit
Clutch wheel I.D. 140.0 – 140.2 (5.512 – 5.520) 140.5 (5.53)
Clutch shoe —
No groove at any
part
Clutch engagement r/min 1 500 – 2 000 r/min —
Clutch lock-up r/min 3 500 – 4 000 r/min —
To Next Page
Loading...
Need help?
General
