Yanmar 1GM User Manual page 138

132
Table 1 ENGINE SPECIFICATIONS (20M AND 2GM20)
CHAPTER SIX
Bore
2GM
2GM20
Stroke
Displacement
2GM
2GM20
Number of cylinders
Firing order
Cylinder liner diameter (2GM)
Cylinder liner protrusion (2GM)
Cylinder bore diameter (2GM20)
Borelliner out-of-round-max.
Cylinder block warpage-max.
Piston diameter
2GM
Standard
Wear limit
2GM20
Standard
Wear limit
Piston top clearance
Piston ring side clearance
Top ring
Second ring
011 ring
Ring end gap (all rings)
Piston pin diameter
Piston pin hole diameter
In piston
In rod
Piston pin clearance
In rod
In piston
Piston ring width
Top and second ring
011 control ring
Cylinder liner protrusion (2GM)
Crankshaft main journal diameter
Timing gear end
Center
Flywheel end
Journal out-of-round-max.
Crankshaft end play
Crankshaft runout-max.
Main bearing clearance
Timing gear end
Center
Flywheel end
Intermediate thrust bearing wldth-mln.
Crankpln diameter
Journal out-of-round-max.
Crankpln bearing clearance
Connecting rod side clearance
Cylinder head warpage-max.
Camshaft
Valve lobe 11ft
Fuel pump lobe 11ft
Journal diameter
Runout
72 mm (2.83 In.)
75 mm (2.95 In.)
72 mm (2.83 In.)
586 cc (35.7 cu. In.)
636 cc (38.8 cu. In.)
2
1-2
72.000 mm (2.8346 In.)
0.005-0.075 mm (0.0002-0.0030 in.)
75.000-75.030 mm (2.9528-2.9540 ln.)
0.02 mm (0.0008 In.)
0.05 mm (0.002 In.)
71.913-71.943 mm (2.8312-2.8324 In.)
71.850 mm (2.8287 In.)
74.910-74.940 mm (2.9492-2.9504 In.)
74.850 mm max. (2.9468 In.)
0.68-0.88 mm (0.027-0.035 In.)
0.065-0.100 mm (0.0026-0.0039 In.)
0.035-0.070 mm (0.0014-0.0028 In.)
0.020-0.055 mm (0.0008-0.0022 In.)
0.20-0.40 mm (0.008-0.016 In.)
19.991-20.000 mm (0.7870-0.7874 In.)
19.995-20.008 mm (0.7872-0.7877 In.)
20.000 mm (0.7874 In.)
0.025-0.047 mm (0.0010-0.0019 In.)
0.005 mm tlght-o.017 mm loose
(0.0002 In. tlght-o.0007 In. loose)
1.97-1.99 mm (0.0776-0.0783 In.)
3.97-3.99 mm (0.1563-0.1571 In.)
0.005-0.075 mm (0.0002-0.0030 In.)
43.950-43.964 mm (1.7303-1.7309 In.)
43.950-43.964 mm (1.7303-1.7309 In.)
59.950-59.964 mm (2.3602-2.3608 In.)
0.01 mm (0.0004 In.)
0.09-0.19 mm (0.0035-0.0075 In.)
0.15 mm (0.006 In.)
0.036-0.092 mm (0.0014-0.0036 in.)
0.03&-0.092 mm (0.0014-0.0036 In.)
0.03&-0.095 mm (0.0014-0.0037 In.)
24.63 mm (0.970 In.)
39.950-39.964 mm (1.5728-1.5734 In.)
0.01 mm (0.0004 In.)
0.028-0.086 mm (0.0011-0.0034 In.)
0.2-0.4 mm (0.008-0.016 In.)
0.07 mm (0.003 In.)
35.000 mm (1.3780 In.)
33.000 mm (1.2992 In.)
30.000 mm (1.1811 In.)
0.02 mm max. (0.0008 In. max.)
(continued)