Yanmar 6BY2 - Cooling System

BY Service Manual
7-1
© 2009 Yanmar Marine International
BY Service Manual
Section 7
COOLING SYSTEM
Page
Safety Precautions .......................................................................... 7-3
Introduction...................................................................................... 7-4
Specifications .................................................................................. 7-4
Test and Adjustment Specifications .......................................... 7-4
Repair Specifications................................................................. 7-4
Special Torque Chart................................................................. 7-4
Special Service Tools...................................................................... 7-5
Measuring Instruments.................................................................... 7-5
Cooling Flow Diagram ..................................................................... 7-6
Tests and Adjustments.................................................................... 7-7
Pressure Test Cooling System and Filler Cap........................... 7-7
Test Thermostat ........................................................................ 7-8
Repair.............................................................................................. 7-8
Drain and Refill Seawater Cooling System................................ 7-8
Check and Replace Anodes...................................................... 7-9
Drain and Fill Closed Cooling System..................................... 7-10
Disconnect and Connect Quick-Connect Fittings.................... 7-11
Remove and Install Hydraulic Oil Cooler................................. 7-11
Inspect and Clean Hydraulic Oil Cooler................................... 7-12
Remove and Install Charge Air Cooler.................................... 7-12
Disassemble and Assemble Charge Air Cooler ...................... 7-13
Remove and Install Heat Exchanger....................................... 7-13
Disassemble and Assemble Heat Exchanger ......................... 7-14
Remove and Install Coolant Pump.......................................... 7-15
Remove and Install Thermostat............................................... 7-16
Seawater Pump....................................................................... 7-18