Section 4 - Maintenance
4.
Remove the anode assembly (anode plug and the sacrificial anode) from the top of the aftercooler end cover.
b
5.
On 4.2 models, remove the anode assembly (anode plug and the sacrificial anode) from the aft end of the fluid cooler.
a
Cleaning and Inspection
Inspection and replacement interval will vary according to the condition of the seawater and the mode of engine operation.
NOTE: Using sandpaper, fiber brush, or cleaning pad, remove the deposits from the surface of the anode before trying to
determine the amount of erosion. Do not use a mild steel brush, which might leave deposits that could accelerate corrosion.
1.
Remove the deposits.
2.
Inspect and measure the anode. Compare the measurements to the specifications for a new sacrificial anode and replace
the anode assembly when deteriorated 50%.
NOTE: Sacrificial anodes are available only as an assembly. Replace both the plug and anode as a unit.
a
Page 70
a
b
e
b
d
c
a -
Aftercooler end cover
b -
Anode assembly
23266
Anode assembly
a -
Anode plug
b -
Sacrificial anode
c -
Length
d -
Diameter
e -
Sealing washer
19226
4.2
a -
Anode assembly
b -
Fluid cooler
23710
90-8M0113987
DECEMBER 2015
eng