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Yanmar 4JH4E - Page 11

Yanmar 4JH4E
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8.5 Piston cooling oil nozzle ..................................................................................... 259
8.6 Rotary waste oil pump (Optional) ....................................................................... 260
9. Coolant system ............................................................................................................ 261
9.1 Coolant system ................................................................................................... 261
9.2 Seawater pump ................................................................................................... 263
9.2.1 Specifications of seawater pump ............................................................ 264
9.2.2 Seawater pump disassembly .................................................................. 265
9.2.3 Seawater pump Inspection...................................................................... 265
9.2.4 Seawater pump reassembly.................................................................... 266
9.3 Fresh water pump ............................................................................................... 267
9.3.1 Fresh water pump construction............................................................... 267
9.3.2 Specifications of fresh water pump ......................................................... 268
9.3.3 Fresh water pump disassembly .............................................................. 268
9.3.4 Fresh water pump inspection .................................................................. 269
9.4 Heat exchanger .................................................................................................. 271
9.4.1 Heat exchanger construction .................................................................. 271
9.4.2 Specifications of heat exchanger ............................................................ 271
9.4.3 Disassembly and reassembly of the heat exchanger.............................. 271
9.4.4 Heat exchanger inspection...................................................................... 272
9.5 Pressure cap and coolant recovery tank ............................................................ 273
9.5.1 Pressure cap construction....................................................................... 273
9.5.2 Pressure cap pressure control ................................................................ 273
9.5.3 Pressure cap inspection.......................................................................... 273
9.5.4 Replacing filler neck ................................................................................ 274
9.5.5 Function of the coolant recovery tank ..................................................... 275
9.5.6 Specifications of coolant recovery tank................................................... 275
9.5.7 Mounting the coolant recovery tank ........................................................ 276
9.5.8 Precautions on usage of the coolant recovery tank ................................ 276
9.6 Thermostat .......................................................................................................... 277
9.6.1 Functioning of thermostat........................................................................ 277
9.6.2 Thermostat construction.......................................................................... 277
9.6.3 Characteristics of thermostat .................................................................. 277
9.6.4 Thermostat inspection............................................................................. 277
9.6.5 Testing the thermostat ............................................................................ 277
9.7 Bilge pump and bilge strainer (Optional) ............................................................ 278

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