Cleaning And Inspection - Mercury 92-8M0069603 Operation & Maintenance Manual

Section 4 - Maintenance
4. Remove the anode assembly (anode plug, sealing washer, and the sacrificial anode) from the aftercooler end cover.

Cleaning and Inspection

NOTE: Use sandpaper, fiber brush, or a cleaning pad to remove the deposits from the surface of the anode before trying to
determine the amount of erosion. Do not use a 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
Sacrificial anode measurements (new)
Length
Diameter
3. Discard the sealing washer.
Page 54
Seawater system anode assembly location
e
b
d
c
Anode assembly
a - Anode plug
b - Sacrificial anode
c - Length
d - Diameter
e - Sealing washer
19226
53216
19 mm (3/4 in.)
16 mm (5/8 in.)
90-8M0113986 DECEMBER 2015
eng