Yanmar 3JH4E Service Manual page 12

4.2.2 Special Handtools ........................................................................................................................... 62
4.2.3 Measuring Instruments ................................................................................................................... 65
4.2.4 Other material ................................................................................................................................. 66
4.2.5 Measuring Instruments ................................................................................................................... 69
4.3 Disassembly and Reassembly ...............................................................................................72
4.3.1 Disassembly.................................................................................................................................... 72
4.3.2 Reassembly .................................................................................................................................... 82
5. Inspection and Servicing of Basic Engine Parts ............................................................ 93
5.1 Cylinder Block ........................................................................................................................93
5.1.1 Inspection of parts........................................................................................................................... 93
5.1.2 Cleaning of oil holes .................................................................. 93
5.1.3 Color check procedure.................................................................................................................... 93
5.1.4 Replacement of cup plugs .............................................................................................................. 94
5.1.5 Cylinder bore measurement............................................................................................................ 95
5.2 Cylinder Head ........................................................................................................................96
5.2.1 Inspecting the cylinder head ........................................................................................................... 97
5.2.2 Valve seat correction procedure........................................................ 98
5.2.3 Intake/exhaust valves, valve guides .................................................... 99
5.2.4 Valve springs ................................................................................................................................ 101
5.2.5 Assembling the cylinder head......................................................... 102
5.2.6 Measuring top clearance ............................................................. 102
5.2.7 Intake and exhaust rocker arms ....................................................... 103
5.2.8 Adjustment of valve clearance ...................................................................................................... 103
5.3 Piston and Piston Pins ..........................................................104
5.3.1 Piston ............................................................................................................................................ 104
5.3.2 Piston pin .......................................................................... 105
5.3.3 Piston rings ........................................................................ 105
5.4 Connecting Rod ................................................................108
5.4.1 Inspecting the connection rod......................................................... 108
5.4.2 Crank pin metal............................................................................................................................. 109
5.4.3 Piston pin bushing .................................................................. 111
5.4.4 Assembling piston and connecting rod ................................................. 111
5.5 Crankshaft and Main Bearing ...............................................................................................112
5.5.1 Crankshaft..................................................................................................................................... 112
5.5.2 Main bearing ....................................................................... 115
5.6 Camshaft and Tappets .........................................................................................................116
5.6.1 Camshaft .......................................................................... 116
5.6.2 Tappets ......................................................................................................................................... 118