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6LY3 Service Manual

5-1

6LY3 Service Manual

Section 5

ENGINE

Page

Safety Precautions .......................................................................... 5-5

Introduction...................................................................................... 5-5

Disassembling the Engine and Components .................................. 5-6

Precautions Before Engine Disassembly .................................. 5-6

Special Tools............................................................................. 5-7

Removing the Engine from the Vessel .................................... 5-18

Draining the Coolant................................................................ 5-18

Draining the Engine Oil............................................................ 5-18

Removing the Electrical Wiring................................................ 5-18

Removing the Fuel Filter and Fuel Hoses ............................... 5-19

Removing the Air Silencer ....................................................... 5-19

Removing the Mixing Elbow .................................................... 5-19

Removing the Turbocharger.................................................... 5-19

Removing the Coolant Hoses.................................................. 5-19

Removing the Intercooler ........................................................ 5-19

Removing the Starter Motor .................................................... 5-20

Removing the Alternator.......................................................... 5-20

Removing the Coolant Tank, Cooler and Pump...................... 5-20

Removing the Seawater Pump................................................ 5-20

Removing the Oil Filter and Oil Cooler .................................... 5-20

Removing the Electronic Control Devices ............................... 5-20

Removing the Fuel Injection Lines .......................................... 5-20

Removing the Fuel Injection Nozzles ...................................... 5-21

Removing the Fuel Injection Pump.......................................... 5-21

Removing the Rocker Arm Shaft Assembly ............................ 5-21

Removing the Cylinder Head................................................... 5-21

Removing the Marine Gear ..................................................... 5-21

Removing the Crankshaft Damper and Pulley ........................ 5-21

Removing the Drive Shaft Housing Cover............................... 5-21

Removing the Flywheel and Flywheel Housing....................... 5-21

Turning the Engine Block Over................................................ 5-21

Removing the Oil Pan and Spacer .......................................... 5-21

Removing the Connection Rod End Caps............................... 5-21

Yanmar 6LY3 series Service Manual

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