MAINTENANCE
SECTION 5
Page 78 CMD-4081877 / 90-865861040 MARCH 2004
0161.02
Corrosion Protection
Whenever two or more dissimilar metals are submerged in a conductive solution, such as
saltwater, polluted water or water with a high mineral content, a chemical reaction takes
place causing electrical current to flow between metals. The electrical current flow causes
the metal that is most chemically active, or anodic, to erode. This is known as galvanic
corrosion and, if not controlled, it will in time cause the need for replacement of power
package components exposed to water. Refer to the Marine Corrosion Protection Guide
(90-88181301).
CE550
Antifouling Paints
In some areas it may be advisable to paint the bottom of the boat to help prevent marine
growth. Contact your authorized Cummins MerCruiser Diesel dealer / distributor for
recommendations for your boat.
00000
Internal Components
Sacrificial anode locations:
• Starboard, aft-end of the heat exchanger / fluid cooler.
• Top of the aftercooler end cover.
REMOVAL
1. Allow the engine to cool.
2. Remove anode plugs and sacrificial anodes.
80059
b
c
a
c
a-Heat exchanger
b-Aftercooler end cover
c-Anode plug and sacrificial anode
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