Valves, grinding ...................................................... 113 Valve stem seals, replacing .................................... 114 Cylinder head, pressure testing ............................... 116 Copper sleeve for unit injector, replacing ................. 119 Camshaft, checking for wear ................................... 123 Camshaft bearing housing, replacing ....................... 124 Camshaft sensor distance, checking ...................... 125 Transmission, replacing .......................................... 126 Group 22: Lubrication system .............................. 132 When working with chemicals, fuel and lubricating oil ... 132 Overview, control valves ......................................... 132 Pressure reduction valve, replacing ........................ 133 Bypass valve, oil filter, replacing ............................. 133 Oil pressure safety valve, replacing ........................ 134 Piston cooling valves, replacing .............................. 134 Bypass valve oil filters, full flow, replacing .............. 135 Oil filters, checking ................................................. 136 Oil pressure sensor, checking ................................. 136 Engine oil and oil filters, replacing ........................... 137 Pressure reduction valve, checking ........................ 138 Safety valve, checking ............................................ 138 Oil pump, replacing ................................................. 139 Oil pump, checking ................................................. 140 Oil cooler ................................................................ 141 Oil cooler, leakage test ........................................... 142 Bypass valve oil cooler, replacing ........................... 143 Group 23: Fuel system .......................................... 144 Draining, fuel channel in cylinder head .................... 144 Control module, replacing ........................................ 145 Fuel filters, replacing ............................................... 147 Primary fuel filter, change ....................................... 148 Fuel feed pump, replacing ....................................... 149 Unit injector, replacing ............................................. 150 Venting the fuel system .......................................... 153 Group 25: Inlet / exhaust systems ........................ 154 Turbo, replacing ...................................................... 154 Group 26: Cooling system .................................... 156 Cooling system, draining ......................................... 156 Cooling system, cleaning ........................................ 157 Cooling system, pressure-testing ............................ 158 Cooling system, filling ............................................. 159 Coolant pump, replacing .......................................... 160 Thermostat, functional check .................................. 161 Thermostat, replacing ............................................. 161 Coolant filter, changing ............................................ 162 Alternator belt/ Drive belt, checking ........................ 163 Drive belt, changing ................................................ 163 Alternator belts, changing ....................................... 164
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