CLOSED COOLING SYSTEM
SERVICE MANUAL NUMBER 22
90-860074-1 FEBRUARY 2002 Page 6B-27
Removal
NOTICE
Refer to Cold Weather or Extended Storage, Draining Instructions in SECTION 1B and
Precautions in this section, BEFORE proceeding.
1. Drain the seawater system.
2. Drain the closed cooling system.
NOTE: In the following instructions, obtain clean, suitable devices and plug hoses to avoid
loss of engine oil.
3. Disconnect oil lines from oil cooler fittings near each end of oil cooler on heat exchanger.
Quickly plug lines.
NOTE: Components shown removed for visual clarity.
a
75301
c
b
a-Heat Exchanger With Oil Cooler
b-Starboard Oil Line And Fitting
c-Port Oil Line And Fitting
4. Disconnect seawater and closed cooling hoses as required to allow removal of heat
exchanger.
5. Disconnect turbocharger coolant vent hose from fitting on upper-port side of the heat
exchanger.
6. Remove the two large screw clamps retaining the heat exchanger to the port and
starboard brackets.
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