Table of Contents
Systems Operation Section
General Information
Introduction ..........................................................4
Engine Operation
Basic Engine.........................................................9
Air Inlet and Exhaust System (Single
Turbocharger) ...................................................13
Air Inlet and Exhaust System (Series
Turbochargers)..................................................19
Clean Emissions Module (Diesel Oxidation Catalyst
(DOC) and Selective Catalytic Reduction (SCR)
System) ............................................................24
Clean Emissions Module (Diesel Oxidation Catalyst
(DOC), Diesel Particulate Filter (DPF) and Selective
Catalytic Reduction (SCR) System) ....................26
DEF Dosing Control System ................................29
Cooling System ..................................................35
Lubrication System .............................................37
Electrical System ................................................37
Cleanliness of Fuel System Components ..............39
Fuel Injection .....................................................40
Electronic Control System ...................................48
Power Sources ...................................................69
Glossary of Electronic Control Terms ....................74
Testing and Adjusting Section
Fuel System
Fuel System - Inspect ..........................................80
Air in Fuel - Test ..................................................80
Finding Top Center Position for No. 1 Piston .........82
Fuel Injection Timing - Check ...............................83
Fuel Quality - Test ...............................................84
Fuel System - Prime ............................................85
Gear Group (Front) - Time ...................................86
Air Inlet and Exhaust System
Air Inlet and Exhaust System - Inspect ..................87
Turbocharger - Inspect (Series Turbochargers)......88
Turbocharger - Inspect (Single Turbocharger) .......91
Exhaust Cooler (NRS) - Test ................................94
Compression - Test .............................................95
Engine Valve Lash - Inspect .................................96
Valve Depth - Inspect...........................................97
Valve Guide - Inspect...........................................98
Diesel Exhaust Fluid Quality - Test........................99
Aftertreatment SCR System Dosing - Test........... 100
Diesel Exhaust Fluid Tank - Flush ....................... 104
Lubrication System
Engine Oil Pressure - Test ................................. 107
Engine Oil Pump - Inspect.................................. 107
Excessive Bearing Wear - Inspect ...................... 108
Excessive Engine Oil Consumption - Inspect....... 108
Increased Engine Oil Temperature - Inspect ........ 109
Cooling System
Cooling System - Check .................................... 110
Cooling System - Inspect ................................... 110
Cooling System - Test........................................ 111
Engine Oil Cooler - Inspect ................................ 112
Water Temperature Regulator - Test ................... 113
Water Pump - Inspect ........................................ 113
Basic Engine
Position the Valve Mechanism Before Maintenance
Procedures ..................................................... 114
Piston Ring Groove - Inspect.............................. 114
Connecting Rod - Inspect................................... 115
Cylinder Block - Inspect ..................................... 116
Cylinder Head - Inspect ..................................... 116
Piston Height - Inspect....................................... 117
Flywheel - Inspect ............................................. 118
Flywheel Housing - Inspect ................................ 119
Gear Group - Inspect......................................... 120
Crankshaft Pulley - Check.................................. 121
Electrical System
Alternator - Test................................................. 122
Battery - Test .................................................... 124
Charging System - Test ..................................... 124
V-Belt - Test ...................................................... 125
Electric Starting System - Test............................ 125
Index Section
Index................................................................ 129
UENR4490-01 3
Table of Contents
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