Yanmar 3JH4E Service Manual page 13

5.7 Timing Gear .........................................................................................................................119
5.7.1 Inspecting the gears...................................................................................................................... 119
5.7.2 Gear timing marks .................................................................. 119
5.8 Flywheel and Housing ..........................................................................................................120
5.8.1 Position of top dead center and fuel injection timing..................................................................... 120
5.8.2 Damper disc and cooling fan ........................................................................................................ 121
6. FUEL INJECTION EQUIPMENT ................................................................................. 122
6.1 Fuel Injection Pump/Governor .............................................................................................122
6.1.1 Fuel system diagram ................................................................ 122
6.1.2 Fuel injection pump service data .................................................................................................. 123
6.1.3 Fuel injection pump structure........................................................................................................ 125
6.1.4 Removing a fuel injection pump.................................................................................................... 127
6.1.5 Installing a fuel injection pump...................................................................................................... 127
6.1.6 Adjusting fuel injection timing........................................................................................................ 127
6.1.7 Troubleshooting of fuel injection pump ......................................................................................... 128
6.1.8 Major faults and troubleshooting................................................................................................... 128
6.1.9 Tools ............................................................................................................................................. 131
6.2 Fuel Feed Pump ................................................................133
6.2.1 Construction of fuel feed pump........................................................ 133
6.2.2 Fuel feed pump specifications ...................................................................................................... 133
6.2.3 Disassembly and reassembly of fuel feed pump .......................................................................... 134
6.2.4 Fuel feed pump inspection............................................................................................................ 134
6.3 Fuel Filter .....................................................................136
6.3.1 Fuel filter specifications................................................................................................................. 136
6.3.2 Fuel filter inspection ...................................................................................................................... 136
6.4 Fuel Tank .............................................................................................................................137
7. INTAKE AND EXHAUST SYSTEM ............................................................................. 138
7.1 Intake System ......................................................................................................................138
7.1.1 Breather system (A reductor to intake air system of blowby gas)........................... 138
7.1.2 Diaphragm assy inspection........................................................................................................... 139
7.2 Exhaust System ...................................................................................................................140
7.2.1 Construction.................................................................................................................................. 140
7.2.2 3Mixing elbow inspection .............................................................................................................. 140
8. LUBRICATION SYSTEM ............................................................................................. 141
8.1 Lubrication System ...............................................................................................................141
8.2 Lube Oil Pump .....................................................................................................................142
8.2.1 Lube oil pump construction ........................................................... 142
8.2.2 Specifications of lube oil pump ..................................................................................................... 142