CONTENTS
1. General ............................................................................................................................ 1
1.1 Exterior views ......................................................................................................... 1
1.2 Specifications .......................................................................................................... 4
1.3 Fuel oil, lubricating oil and coolant ........................................................................ 10
1.3.1 Fuel oil....................................................................................................... 10
1.3.2 Lubricating oil ............................................................................................ 12
1.3.3 Coolant...................................................................................................... 13
1.4 Engine outline ....................................................................................................... 14
1.5 Piping diagrams .................................................................................................... 33
1.6 Exhaust Gas Emission Regulation in U.S.A. only ................................................. 46
1.6.1 Engines under 37kw: 3JH4E..................................................................... 46
1.6.2 Engines of 37kW or more: 4JH4-TE and 4JH4-HTE................................. 49
2. Inspection and adjustment ............................................................................................. 52
2.1 Periodic maintenance schedule ............................................................................ 52
2.2 Periodic inspection and maintenance procedure .................................................. 54
2.2.1 Check before starting ................................................................................ 54
2.2.2 Inspection after initial 50 hours or one month operation ........................... 60
2.2.3 Inspection every 50 hours or monthly ....................................................... 69
2.2.4 Inspection every 250 hours or one year.................................................... 74
2.2.5 Inspection every two years........................................................................ 84
2.2.6 Inspection every 1,000 hours or four years............................................... 84
2.3 Adjusting the no-load maximum or minimum speed ............................................. 94
2.4 Sensor inspection ................................................................................................. 95
2.4.1 Oil pressure switch.................................................................................... 95
2.4.2 Thermo switch........................................................................................... 95
2.5 Thermostat inspection .......................................................................................... 96
2.6 Adjusting operation ............................................................................................... 97
2.6.1 Preliminary precautions............................................................................. 97
2.6.2 Adjusting operation procedure .................................................................. 97
2.6.3 Check points and precautions during running........................................... 98
2.7 Long storage ......................................................................................................... 99
3. Troubleshooting ........................................................................................................... 100
3.1 Preparation before troubleshooting .................................................................... 100