7.6 Fuel Filter 119
7.6.1 Fuel filter – Replacement 119
7.6.2 Fuel prefilter – Draining 120
7.6.3 Fuel prefilter – Filter element replacement 121
7.6.4 Fuel prefilter – Venting 123
7.7 Air Filter 124
7.7.1 Air filter – Replacement 124
7.7.2 Air filter – Removal and installation 125
7.8 Air Intake 126
7.8.1 Service indicator – Signal ring position check 126
7.9 Starting Equipment 127
7.9.1 Electric starter ‒ Overview 127
7.9.2 Starter – Removal 128
7.9.3 Starter ‒ Installation 129
7.10 Lube Oil System, Lube Oil Circuit 130
7.10.1 Engine oil – Level check 130
7.10.2 Engine oil – Change 131
7.11 Oil Filtration / Cooling 132
7.11.1 Engine oil filter – Replacement 132
7.11.2 Centrifugal oil filter – Cleaning and filter-
sleeve replacement 133
7.12 Coolant Circuit, General, High-Temperature
Circuit 135
7.12.1 Engine coolant – Level check 135
7.12.2 Engine coolant – Change 136
7.12.3 Engine coolant – Draining 137
7.12.4 Engine coolant – Filling 138
7.12.5 Engine coolant pump – Relief bore check 140
7.12.6 Engine coolant – Sample extraction and
analysis 141
7.13 Low-Temperature Circuit 142
7.13.1 Charge-air coolant – Filling 142
7.13.2 Charge-air coolant – Draining 144
7.13.3 Charge-air coolant – Change 145
7.13.4 Charge-air coolant – Level check 146
7.13.5 Charge-air coolant pump – Relief bore check 147
7.13.6 Intercooler – Checking condensate drain for
coolant discharge and obstructions 148
7.14 Belt Drive 149
7.14.1 Drive belt – Condition check 149
7.14.2 Drive belt – Tension check 150
7.14.3 Drive belt ‒ Tension adjustment 152
7.14.4 Drive belt – Replacement 153
7.15 Battery-Charging Generator 154
7.15.1 Battery-charger drive – Drive belt replacement 154
7.16 Fuel Supply System 156
7.16.1 Differential pressure gage – Check 156
7.16.2 Coolant level sensor – Check 157
7.16.3 Pump capacity – Check 158
7.17 Engine Governor 159
7.17.1 Engine control system – Overview 159
7.17.2 Engine governor – Removal and installation 160
7.17.3 Engine governor plug connections – Check 161
7.18 Wiring (General) for Engine/Gearbox/Unit 162
7.18.1 Engine cabling – Check 162
7.19 Accessories for (Electronic) Engine
Governor / Control System 163
7.19.1 Engine governor and connector – Cleaning 163
8 Appendix A
8.1 List of abbreviations 164
8.2 MTU contact persons/service partners 166
9 Appendix B
9.1 Special Tools 167
9.2 Index 175
4 | Table of Contents | MS15054/00E 2015-09
DCL-ID: 0000037216 - 002
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