8.4 Fan Drive 116
8.4.1 Drive belt – Condition check 116
8.4.2 Drive belt – Tension check 117
8.4.3 Drive belt ‒ Tension adjustment 119
8.4.4 Drive belt – Replacement 120
8.5 Valve Drive 121
8.5.1 Valve clearance – Check and adjustment 121
8.5.2 Cylinder head cover – Cylinder head cover 124
8.6 Injector 126
8.6.1 Injector ‒ Replacement 126
8.6.2 Injector – Removal and installation 127
8.6.3 Injector functions 132
8.7 Fuel System 133
8.7.1 HP fuel line and pressure pipe neck –
Replacement 133
8.7.2 Fuel system – Venting 136
8.7.3 Fuel – Draining 137
8.7.4 Fuel cooler – External contamination and leak-
tightness check 138
8.7.5 Fuel cooler – Cleaning 139
8.8 Fuel Filter 141
8.8.1 Fuel filter – Replacement 141
8.8.2 Fuel prefilter – Draining 142
8.8.3 Fuel prefilter (non-switchable) – Draining 143
8.8.4 Fuel prefilter (switchable) – Draining 145
8.8.5 Fuel prefilter – Pressure ratios 148
8.8.6 Fuel prefilter (switchable) – Low pressure
indicator check 149
8.8.7 Fuel prefilter (non-switchable) – Filter element
replacement 150
8.8.8 Fuel prefilter (switchable) – Filter element
replacement 152
8.8.9 Fuel prefilter – Venting 155
8.9 Air Filter 157
8.9.1 Air filter – Replacement 157
8.9.2 Air filter – Removal and installation 158
8.10 Air Intake 159
8.10.1 Service indicator – Signal ring position check 159
8.11 Starting Equipment 160
8.11.1 Electric starter ‒ Overview 160
8.11.2 Starter – Removal 161
8.11.3 Starter – Installation 162
8.11.4 Pneumatic starter – Overview 163
8.11.5 Starter – Removal 164
8.11.6 Starter ‒ Installation 165
8.12 Lube Oil System, Lube Oil Circuit 166
8.12.1 Engine oil level – Check 166
8.12.2 Engine oil – Change 167
8.13 Oil Filtration / Cooling 168
8.13.1 Engine oil filter – Replacement 168
8.14 Coolant Circuit, General, High-Temperature
Circuit 169
8.14.1 Engine coolant – Level check 169
8.14.2 Engine coolant – Change 170
8.14.3 Engine coolant – Draining 171
8.14.4 Engine coolant – Filling 172
8.14.5 Engine coolant pump – Relief bore check 174
8.14.6 Engine coolant – Sample extraction and
analysis 175
8.15 Low-Temperature Circuit 176
8.15.1 Charge-air coolant – Filling 176
8.15.2 Charge-air coolant – Draining 178
8.15.3 Charge-air coolant – Change 179
8.15.4 Charge-air coolant level – Check 180
8.15.5 Charge-air coolant pump – Relief bore check 181
8.15.6 Intercooler – Checking condensate drain for
coolant discharge and obstructions 182
8.16 Battery-Charging Generator 183
8.16.1 Drive belt – Condition check 183
8.16.2 Drive belt – Tension check 184
8.16.3 Drive belt ‒ Tension adjustment 186
8.16.4 Drive belt – Replacement 187
8.17 Preheater 188
8.17.1 Preheater – Overhaul 188
8.17.2 Preheater – Function and leak check 189
8.17.3 Preheater – Heating element and housing
check 190
8.17.4 Preheater – Heating element and housing
check 193
8.17.5 Preheater – Heating element and housing
check 196
8.17.6 Preheater – Solenoid switch replacement 199
8.17.7 Preheater – Solenoid switch replacement 201
8.17.8 Preheater – Solenoid switch replacement 203
8.17.9 Preheater thermostats – Replacement 205
8.17.10 Preheater thermostats – Replacement 208
8.17.11 Preheater thermostats – Replacement 211
8.18 Engine Mounting / Support 214
8.18.1 Engine mounting – Checking securing screws
for firm seating 214
8.18.2 Engine mounting – Checking condition of
resilient mounts 215
8.19 Generator 216
8.19.1 Generator mounting – Checking condition of
resilient mounts 216
8.19.2 Generator mounting – Checking firm seating
of securing screws 217
8.20 Engine Governor 218
8.20.1 Engine Control Unit – Overview 218
8.20.2 Engine Control Unit – Removal and
installation 219
8.20.3 Engine governor plug connections – Check 220
8.21 Wiring (General) for Engine/Gearbox/Unit 221
4 | Table of Contents | MS15054/03E 2018-07
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