7.12 Coolant Circuit, General, High-Temperature
Circuit 104
7.12.1 Drain and vent points 104
7.12.2 Engine coolant – Level check 108
7.12.3 Engine coolant – Change 109
7.12.4 Engine coolant ‒ Draining 110
7.12.5 Engine coolant – Filling 111
7.12.6 Engine coolant pump – Relief bore check 113
7.12.7 Engine coolant – Sample extraction and
analysis 114
7.13 Belt Drive 115
7.13.1 Drive belt – Condition check 115
7.13.2 Drive belt – Tension check 116
7.13.3 Drive belt ‒ Tension adjustment 118
7.13.4 Drive belt – Replacement 119
7.14 Battery-Charging Generator 120
7.14.1 Battery-charger drive – Drive belt replacement 120
7.15 Fuel Supply System 122
7.15.1 Water drain valve – Check 122
7.15.2 Differential pressure gauge – Check 123
7.15.3 Water level probe (3-in-1 rod electrode) –
Check 124
7.15.4 Pump capacity – Check 125
7.15.5 Coalescer filter element – Replacement 126
7.16 Engine Governor 128
7.16.1 Engine control system – Overview 128
7.16.2 Engine control system – Removal and
installation 129
7.16.3 Engine governor plug connections – Check 130
7.17 Wiring (General) for Engine/Gearbox/Unit 131
7.17.1 Еngine wiring ‒ Check 131
7.18 Accessories for (Electronic) Engine
Governor / Control System 132
7.18.1 Engine governor and connectors – Cleaning 132
7.18.2 Engine governor plug connections – Check 133
8 Appendix A
8.1 List of abbreviations 134
8.2 MTU contact persons/service partners 136
9 Appendix B
9.1 Special Tools 137
9.2 Index 145
4 | Table of Contents | MS150118/00E 2014-07
DCL-ID: 0000033223 - 001
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