Cylinder Block - Yanmar 3YM30 Sevice Manual

13. Service standards

13.2.3 Cylinder block

(1) Cylinder block
Inspection item
Cylinder inside diameter
Cylinder bore
(2) Crankshaft
Inspection item
Bending (1/2 the dial gauge reading)
Crank pin
Crank journal
(Selective pairing)
(3) Thrust bearing
Inspection item
Crankshaft side gap
3YM30
3YM20
Roundness
Inclination
Pin outside diameter
Metal inside diameter
Metal thickness
Clearance
Journal outside diameter
Metal inside diameter
Metal thickness
Clearance
Standard
0.111-0.250
Standard
76.000-76.030
70.000-70.030
0.01 or less
Standard
-
41.952-41.962
41.982-42.010
1.503-1.509
0.020-0.058
46.952-46.962
46.982-47.002
2.009-2.014
0.020-0.050
Limit
0.30
204
Reference
Limit
page
76.200
70.200
5.1.5
0.03
Reference
Limit
page
0.01 5.5.1(2)
41.902
-
-
0.120
5.4.2(1)
5.5.1(3)
46.902
-
-
0.120
Reference
page
5.5.1(4)
mm
mm
mm