Yanmar 3JH4BE Service Manual page 12

5.6 Camshaft and tappets ..........................................................................................................126
5.6.1 Camshaft....................................................................................................................................... 126
5.6.2 Tappets ......................................................................................................................................... 128
5.7 Timing gear ..........................................................................................................................129
5.7.1 Inspecting the gears...................................................................................................................... 129
5.7.2 Gear timing marks......................................................................................................................... 129
5.8 Flywheel and housing ..........................................................................................................130
5.8.1 Position of top dead center and fuel injection timing..................................................................... 130
5.8.2 Damper disc and cooling fan ........................................................................................................ 131
6. Fuel Injection Equipment ............................................................................................. 132
6.1 Fuel Injection pump/governor ...............................................................................................132
6.1.1 Fuel system diagram..................................................................................................................... 132
6.1.2 Fuel injection pump service data .................................................................................................. 133
6.1.3 Fuel injection pump structure........................................................................................................ 136
6.1.4 Removing a fuel injection pump.................................................................................................... 138
6.1.5 Installing a fuel injection pump...................................................................................................... 138
6.1.6 Adjusting fuel injection timing........................................................................................................ 138
6.1.7 Troubleshooting of fuel injection pump ......................................................................................... 139
6.1.8 Major faults and troubleshooting................................................................................................... 139
6.1.9 Tools ............................................................................................................................................. 142
6.2 Fuel feed pump ...................................................................................................................144
6.2.1 Construction of fuel feed pump ..................................................................................................... 144
6.2.2 Fuel feed pump specifications ...................................................................................................... 144
6.2.3 Disassembly and reassembly of fuel feed pump .......................................................................... 145
6.2.4 Fuel feed pump inspection............................................................................................................ 145
.................................................................................................................. 147
6.3 Fuel filter
6.3.1 Fuel filter specifications................................................................................................................. 147
6.3.2 Fuel filter inspection ...................................................................................................................... 147
6.4 Fuel tank ..............................................................................................................................148
7. Intake and Exhaust System ......................................................................................... 149
7.1 Intake system .......................................................................................................................149
7.1.1 Breather system (A reductor to intake air system of blowby gas)................................................. 149
7.1.2 Diaphragm assy inspection........................................................................................................... 150
7.2 Exhaust system ....................................................................................................................151
7.2.1 Construction.................................................................................................................................. 151
7.2.2 Mixing elbow inspection ................................................................................................................ 151