Camshaft And Gear Train - Yanmar 3JH4E Service Manual

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,
fuel injection pump gear and seawater pump gear
3JH4E/ 4JH4E
4JH4-TE/ 4JH4-HTE
Bushing inside diameter
Camshaft outside
diameter
Clearance
Bushing inside diameter
Camshaft outside
diameter
Clearance
Bushing inside diameter
Camshaft outside
diameter
Clearance
Standard
0.05-0.20
0.02 or less
38.600-38.800
39.800-40.000
44.990-45.055
44.925-44.950
0.040-0.130
45.000-45.025
44.910-44.935
0.065-0.115
45.000-45.025
44.925-44.950
0.050-0.100
Standard
45.950-45.975
46.000-46.025
0.025-0.075
Standard
0.07-0.15
321
13. Service standards
Limit Reference page
0.35 5.6.1(1)
0.05 5.6.1(4)
38.350
5.6.1(2)
39.550
45.130
44.890
0.240
45.100
44.875 5.6.1(3)
0.225
45.100
44.890
0.210
Limit Reference page
45.880
46.075 5.7.1(3)
0.150
Limit Reference page
0.17 5.7.1(2)
mm
mm
mm