6B-42 - CLOSED COOLING MODELS 90-823225--1 1096
3. Follow instructions “a” or “b”:
a. On Engines With
Cool Fuel System: Re-
move drain plug from Cool Fuel System sea-
water pipe.
b
74988
a
a - Cool Fuel System Cooler
b - Seawater Pipe Drain Plug
b. On Engines Without Cool Fuel System:
Remove drain plug from port side seawater
pipe.
b
a
74988
a - Seawater Pipe
b - Seawater Pipe Drain Plug
4. Repeatedly clean out drain holes using a stiff
piece of wire. Do this until entire system is
drained.
5. Remove end cover, attaching screw, O-ring and
rubber gasket, from port and starboard ends of
heat exchanger.
IMPORTANT: Use compressed air to blow any
remaining water from tubes in the heat
exchanger.
b
c
d
a
71515
Typical Engine and Heat Exchanger Shown
a - End Cover
b - Screw
c - O-ring
d - Rubber Gasket
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