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 core and around the lubricating oil core. Raw water, pumped
(4) Replace the 8 bolts which hold front end plate
from the sea through the raw water core, removes the heat
to blower housing.
from the engine coolant and lubricating oil.
(5) Install air inlet housing and air cleaner.
(6) Install governor.
b. Removal.
(1) Drain the fresh water cooling system.
(2) Drain the raw water system.
5-20.
Heat Exchanger (and Oil Cooler)
(3) Remove four capscrews (17, fig. 5-54) and
a. General. The heat exchanger is a liquid-toliquid type
four lockwashers (18), then remove the raw water inlet elbow
which cools both the engine coolant and the engine lubricating
(16) from the heat exchanger (5).
oil. The liquid coolant which circulates through the engine
enters the top. of the heat exchanger and passes around the
raw water
1.
Electrode assembly
11.
Seal rings
2.
Thermostat housing
12.
Gasket
3.
Gasket
13.
Core
4.
Thermostat
14.
Gasket
5.
Heat exchanger
15.
Cover
6.
Retainer
16.
Elbow
7.
Cover
17.
Capscrew
8.
Lockwasher
18.
Lockwasher
9.
Capscrew
19.
Gasket
10.
Gasket
20.
Capscrews
21.
Cap
Figure 5-54. Heat exchanger.
(4) Remove the four capscrews securing the
(5) Remove two hose clamps (17, fig. 5-55) from
thermostat housing (2) to heat exchanger (5), then remove
hose (16) and disconnect fresh water pump suction line from
housing (2), gasket (3), and thermostat (4) from the heat
the heat exchanger (5, fig. 5-54).
exchanger.
(6) Remove capscrews (9) and lockwashers (8)
and disconnect raw water discharge cover (7), then
5-68
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