Yanmar 2GMF - Page 139

MULTICYLINDER ENGINES
T.ble 1 ENGINE SPECIFICATIONS (20M AND 2OM20) (continued)
133
Timing gear backlash
Maximum allowable
Push rod runout-max.
Valve lifter
Type
Outside diameter
Outside dlameter-mln.
Clearance In block
Max. clearance
Valve face angle
Valve seat angle
Valve head margin
seat width (Int. and eXh.)
Valve
depth-max.
Valve stem clearance
Intake
Exhaust
Max. stem clearance
Valve stem diameter
Valve stem wear limit
Valve stem runout-max.
Valve guide diameter
Valve guide wear
limit
Valve guide protrusion
Valve spring
Standard free length
Min. free length
Installed
height
Pressure at Installed height
Rocker arm shaft clearance
Rocker arm shaft
clearance-max.
Rocker arm bore wear limit
Rocker arm shaft wear limit
011 pump
Inner rotor tlp-to-outer rotor tip
Max.
Outer rotor-ta-pump
body
Max.
Rotor side clearance
Max.
Shaft clearance
Max.
0.05-0.13 mm (0.002-0.005 In.)
0.3 mm (0.012 In.)
0.03 mm (0.0012 In.)
Mechanical
10.000 mm (0.3937 In.)
9.95 mm (0.3917 In.)
0.010-0.040 mm (0.0004-0.0016 In.)
0.10 mm (0.004 In.)
45°
45°
0.75-1.15 mm (0.030-0.045 In.)
1.n mm (0.070 In.)
1.25 mm (0.049 In.)
0.040-0.065 mm (0.0016-0.0026 In.)
0.045-0.070 mm (0.0018-0.0028 In.)
0.15 mm (0.006 In.)
7.000 mm (0.2756 In.)
6.900 mm (0.2717 In.)
0.03 mm (0.0012 In.)
7.000 mm (0.2756 In.)
7.080 mm (0.2878 In.)
7.0 mm (0.276 In.)
38.5 mm (1.52 In.)
37 mm (1.46 In.)
29.2 mm (1.15 In.)
16.16 kg at 29.2 mm (35.63 lb. at 1.15 In.)
0.016-0.052 mm (0.0006-0.0020 In.)
0.15 mm (0.006 In.)
14.10 mm (0.555 In.)
13.90 mm (0.547 In.)
0.050-0.105 mm (0.0020-0.0041 In.)
0.15 mm (0.006 In.)
0.050-0.105 mm (0.0020-0.0041 In.)
0.15 mm (0.006 In.)
0.030-0.080 mm
0.13 mm (0.005 In.)
0.015-0.050 mm (0.0006-0.0020 In.)
0.20 mm (0.0079 In.)
T.ble 2 ENGINE SPECIFICATIONS (30M AND 3GM30)
Bore
3GM
3GM30
Stroke
Displacement
3GM
3GM30
Number of cylinders
Firing
order
Cylinder liner diameter (3GM)
Cylinder
liner protrusion (3GM)
Cylinder bore diameter (3GM30)
Borelliner out-of-round-max.
72 mm (2.83 In.)
75 mm (2.95 In.)
72 mm (2.83 In.)
879 cc (53.6 cu. In.)
954 cc (58.2 cu. In.)
3
1-2-3
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 In.)
0.02 mm (0.0008 In.)
(continued)
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