4th Generation Engines
1 Introduction ..............................................................1-1
1.1 Safety instructions .................................................1-3
1.2 To the user ........................................................1-5
1.2.1 Engine type designations ...........................................1-6
1.2.2 Location of the engine serial number ..................................1-7
1.2.3 Marking of the engine control unit ....................................1-8
1.2.4 Lifting the engine ................................................1-8
1.2.5 Starting the engine after major maintenance . . . . . . . . . . . ..................1-9
1.3 Engine construction ...............................................1-11
1.3.1 Engine construction overview ......................................1-11
1.3.2 Technical data ..................................................1-11
1.3.2.1 Principal dimensions and data ................................1-11
1.3.2.2 Fuel system .............................................1-11
1.3.2.3 Lubrication system ........................................1-12
1.3.2.4 Cooling system ..........................................1-12
1.3.2.5 SCR system technical data ..................................1-13
1.3.3 Cylinder block ..................................................1-13
1.3.4 Flywheel housing ...............................................1-13
1.3.5 Valve mechanism ...............................................1-13
1.3.6 Cylinder head ..................................................1-14
1.3.7 Crank mechanism ...............................................1-14
1.3.8 Timing gears ...................................................1-15
1.3.9 Lubrication system ..............................................1-16
1.3.9.1 Oil pressure regulating valve .................................1-17
1.3.9.2 Oil filter and oil cooler in 33-74 engines .........................1-17
1.3.9.3 Oil filter and oil cooler in 84-98 engines .........................1-17
1.3.10 Cooling system ................................................1-18
1.3.10.1 Thermostat .............................................1-18
1.3.11 Air intake system ...............................................1-19
1.3.11.1 Cooled EGR system ......................................1-20
1.3.11.2 EGR cooler .............................................1-21
1.3.12 Fuel system ..................................................1-21
1.3.13 SCR-system ..................................................1-22
1.3.13.1 SCR system overview .....................................1-22
1.3.13.2 SCR system components and their functions ....................1-23
1.3.14 Engine control system ...........................................1-24
1.3.15 Service tool of the engine control system .............................1-27
2 Specifications ............................................................2-1
2.1 Technical data .....................................................2-3
2.1.1 Cylinder block ...................................................2-3
2.1.2 Cylinder liners ...................................................2-3
2.1.3 Cylinder head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...........2-4
2.1.4 Valves and rockers ...............................................2-5
2.1.5 Tappets and push rods ............................................2-6
2.1.6 Camshaft ......................................................2-7
2.1.7 Crankshaft .....................................................2-8
2.1.8 Flywheel ......................................................2-12
2.1.9 Balancing unit ..................................................2-12
2.1.10 Timing gears ..................................................2-12
2.1.11 Connecting rod ................................................2-13
Table of contents
4th Generation Engines
8370 79492
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