Yanmar 2YM15 - Cylinder Block

13. Service standards
204R1
13.2.3 Cylinder block
(1) Cylinder block
(2) Crankshaft
(3) Thrust bearing
mm
Inspection item Standard Limit
Reference
page
Cylinder inside diameter
3YM30 76.000-76.030 76.200
5.1.5
3YM20/2YM15
70.000-70.030 70.200
Cylinder bore
Roundness
0.01 or less 0.03
Inclination
mm
Inspection item Standard Limit
Reference
page
Bending (1/2 the dial gauge reading) - 0.01 5.5.1(2)
Crank pin
3YM30
Pin outside diameter 41.952-41.962 41.902
5.4.2(1)
5.5.1(3)
Metal inside diameter 41.982-42.010 -
Metal thickness 1.503-1.509 -
Clearance 0.020-0.058 0.120
Crank pin
3YM20/2YM15
Pin outside diameter 37.952-37.962 37.902
Metal inside diameter 37.982-38.010 -
Metal thickness 1.503-1.509 -
Clearance 0.020-0.058 0.120
Crank journal
(Selective pairing)
All models
Journal outside diameter 46.952-46.962 46.902
Metal inside diameter 46.982-47.002 -
Metal thickness 2.009-2.014 -
Clearance 0.020-0.050 0.120
mm
Inspection item Standard Limit
Reference
page
Crankshaft side gap 0.111-0.250 0.30 5.5.1(4)