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7.6.2 Air filter – Removal and installation 187

7.7 Lube Oil System, Lube Oil Circuit 188

7.7.1 Engine oil level – Check 188

7.7.2 Engine oil – Change 189

7.7.3 Engine oil – Sample extraction and analysis 190

7.8 Oil Filtration / Cooling 191

7.8.1 Engine oil filter – Replacement 191

7.9 Coolant Circuit, General, High-Temperature

Circuit 192

7.9.1 Engine coolant – Level check 192

7.9.2 Engine coolant – Change 193

7.9.3 Engine coolant – Draining 194

7.9.4 Engine coolant – Filling 196

7.9.5 Vent line of engine coolant circuit –

Replacement 197

7.10 Low-Temperature Circuit 198

7.10.1 Mixture coolant level – Check 198

7.10.2 Mixture coolant level – Check 199

7.10.3 Mixture coolant – Change 200

7.10.4 Mixture coolant – Draining 201

7.10.5 Mixture coolant – Filling 202

7.11 Wiring (General) for Engine/Gearbox/Unit 203

7.11.1 Engine cabling – Check 203

7.11.2 Sensors – Overview 204

7.11.3 Sensors – Removal 208

7.11.4 Sensors – Installation 210

8 Appendix A

8.1 Abbreviations 211

8.2 MTU Onsite Energy contact person / service

partner 213

9 Appendix B

9.1 Special Tools 214

9.2 Index 218

4 | Table of Contents | MS150122/02E 2017-09

DCL-ID: 0000038701 - 003

MTU 20V4000L32FNER User Manual

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