MTU 12 V 4000 M23F, Operating Instructions Manual

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6.7.3 Fuel filter – Replacement 187
6.7.4 Fuel system – Venting 189
6.7.5 Fuel prefilter – Differential pressure check
and adjustment of gauge 190
6.7.6 Fuel prefilter – Draining 191
6.7.7 Fuel prefilter – Flushing 193
6.7.8 Fuel prefilter with water separator – Filter
element replacement 195
6.7.9 Fuel prefilter with water separator – O-ring
replacement in rotary slide valve 197
6.8 Exhaust Turbocharger 198
6.8.1 Overview of turbocharger 198
6.8.2 Compressor wheel – Cleaning 205
6.9 Charge-Air Cooling 213
6.9.1 Intercooler – Checking condensate drain for
water discharge and obstruction 213
6.10 Air Filter 214
6.10.1 Air filter – Replacement 214
6.10.2 Air filter – Removal and installation 215
6.11 Air Intake 216
6.11.1 Service indicator – Signal ring position check
(optional) 216
6.12 Starting Equipment 217
6.12.1 Starter – Condition check 217
6.13 Lube Oil System, Lube Oil Circuit 218
6.13.1 Engine oil – Level check 218
6.13.2 Engine oil – Change 219
6.13.3 Engine oil – Sample extraction and analysis 221
6.14 Oil Filtration / Cooling 223
6.14.1 Engine oil filter ‒ Replacement 223
6.14.2 Oil indicator filter – Cleaning and check 225
6.14.3 Centrifugal oil filter – Cleaning and filter
sleeve replacement 227
6.15 Coolant Circuit, General, High-Temperature
Circuit 230
6.15.1 Drain and vent points 230
6.15.2 Engine coolant level – Check 234
6.15.3 Engine coolant – Change 235
6.15.4 Engine coolant – Draining 236
6.15.5 Engine coolant – Filling 239
6.15.6 HT coolant pump – Relief bore check 241
6.15.7 Engine coolant – Sample extraction and
analysis 242
6.15.8 Engine coolant filter – Replacement 243
6.15.9 Preheating unit 244
6.15.10 Preheater – Overhaul 247
6.15.11 Preheater – Function and leak-tightness check 248
6.16 Raw Water Pump with Connections 249
6.16.1 Raw water pump – Relief bore check 249
6.17 Engine Mounting / Support 250
6.17.1 Engine mounting – Check 250
6.18 Battery-Charging Generator 251
6.18.1 Battery-charging generator drive – Coupling
condition check 251
6.19 Auxiliary PTO 252
6.19.1 Bilge pump – Relief bore check 252
6.20 Fuel Supply System 253
6.20.1 Water drain valve – Check 253
6.20.2 Differential pressure gauge – Check 254
6.20.3 Water level probe (3-in-1 rod electrode) –
Check 255
6.20.4 Pump capacity – Check 256
6.20.5 Coalescer filter element – Replacement 257
6.21 Wiring (General) for Engine/Gearbox/Unit 259
6.21.1 Engine wiring harness – Overview 259
6.21.2 Engine wiring – Check 265
6.22 Accessories for (Electronic) Engine
Governor / Control System 266
6.22.1 CDC parameters – Reset 266
6.22.2 Limit switch for start interlock ‒ Check 267
6.22.3 Engine Control Unit ECU 7 – Checking plug
connections 268
6.22.4 Engine Monitoring Unit EMU 7 – Plug
connection check 269
6.22.5 Interface module EIM plug connections –
Check 270
6.22.6 Engine Control Unit ECU 7 – Removal and
installation 271
6.22.7 EMU 7 – Removal and installation 272
6.22.8 Engine Interface Module EIM – Removal and
installation 273
6.22.9 Diagnostic features of EIM 274
7 Appendix A
7.1 Abbreviations 277
7.2 MTU contact persons/service partners 279
8 Appendix B
8.1 Special Tools 280
8.2 Index 285
6 | Table of Contents | MS150068/01E 2014-01
DCL-ID: 0000005758 - 004