4. Remove the anode assembly.
a - Intercooler
b - Anode plug
c - Anode length 20 mm (0.79 in.)
Cleaning and Inspection
Inspection and replacement interval will vary according to the condition of the seawater and the mode of engine operation.
NOTE: Use 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 - Anode plug
b - Sacrificial anode
c - Length
d - Diameter
e - Sealing washer
Sacrificial anode measurements (new)
Length 20.0 mm (0.79 in.)
Diameter 9.9 mm (0.390 in.)
3. Discard the sealing washer.
Installation
1. Install a new sealing washer on the anode assembly.
a -
Anode assembly
b - Sealing washer
Section 4 - Maintenance
90-8M0133568 eng JUNE 2017 Page 51
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