Camshaft And Gear Train - Yanmar 3YM30 Sevice Manual

(5) Tappet and push rod
Inspection item
Tappet outside diameter
Tappet guide hole inside diameter (cylinder block)
Tappet oil clearance
Push rod bend

13.2.2 Camshaft and gear train

(1) Camshaft
Inspection item
Side gap
Bending (1/2 the dial gage reading)
Cam height
Shaft outside diameter / Metal inside diameter
Gear side
Intermediate
Flywheel side
(2) Idle gear shaft and bushing
Inspection item
Shaft outside diameter
Bushing inside diameter
Clearance
(3) Backlash of each gear
Inspection item
Crank gear, cam gear, idle gear and fuel injection
pump gear
Bushing inside diameter
Camshaft outside
diameter
Clearance
Bushing inside diameter
Camshaft outside
diameter
Clearance
Bushing inside diameter
Camshaft outside
diameter
Clearance
Standard
20.927-20.960
21.000-21.021
0.040-0.094
Less than 0.03
Standard
0.05-0.15
0.02 or less
34.135-34.265
40.000-40.075
39.940-39.960
0.040-0.135
40.000-40.025
39.910-39.935
0.065-0.115
40.000-40.025
39.940-39.960
0.04-0.085
Standard
44.950-44.975
45.000-45.025
0.025-0.075
Standard
0.06-0.12
203
13. Service standards
Reference
Limit
page
20.907
21.041 5.6.2(2)
0.134
0.03 5.6.2(3)
Reference
Limit
page
0.25 5.6.1(1)
0.05 5.6.1(4)
33.89 5.6.1(2)
40.150
39.905
0.245
40.100
39.875 5.6.1(3)
0.225
40.100
39.905
0.195
Reference
Limit
page
44.900
45.075 5.7.1(3)
0.150
Reference
Limit
page
0.14 5.7.1(1)
mm
mm
mm
mm