SERVICE MANUAL NUMBER 28
TROUBLESHOOTING
Corrosion Protection
NOTE:Refer to “MerCathode Controller Wiring Diagram.”
Corrosion On Underwater Parts, Without MerCathode Or Impressed Current
Protection
Cause
Special Instructions
Replace anode(s) when 50%
consumed.
Sacrificial anode(s) consumed.
Add MerCathode (impressed current
protection) or additional sacrificial
anodes.
Stainless steel propeller installed.
Sacrificial anode(s) not grounded to
drive.
Remove anode(s), clean contact
surface, reinstall and check continuity.
Loss of continuity between underwater
parts & ground.
Provide good ground connections.
Shore power causing overload of
anode(s) and/or MerCathode.
Disconnect shore power or install
Quicksilver isolator.
Paint on drive heavily worn
(exposing more metal).
Prime and repaint and/or install
additional anode(s).
Sacrificial anode(s) painted.
Remove paint or replace anode(s).
Leave drive down, install additional
anode (below waterline) or transom
mount a MerCathode.
Drive tilted so far that anode(s) are out
of the water.
Provide good ground to drive. All parts
must be grounded.
Only power trim cylinders are corroded.
Corrosion in area of exhaust outlets.
Exhaust deposits can cause
corrosion.
Remove deposits with marine or auto
wax.
Corrosion occurring after unit removed
from saltwater.
Wash exterior and flush interior with
fresh water.
Corrosion and/or salt build up between
mating parts.
Exclude moisture from between mating
parts with Quicksilver 2-4-C with Teflon.
Stainless Steel parts corroding:
Tightly wrapped fishing line or foreign
material excludes oxygen, causing
corrosion.
Clean parts, remove foreign material,
ensure continuity.
Iron particles, such as from a wire brush,
cause rusting.
Propeller pitting can occur if electrical
continuity is lost.
INDEX
90-863160
MAY 2000
Page 1C-29
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | MerCruiser Sterndrives 90-863160 |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(1 votes, average: 3 out of 3)
Marine readers have rated Mercury MerCruiser Bravo Outdrives Sterndrives Marine Engines Service Manual Number 28 3.0 out of 3.0 based on 1 product reviews. I could not find any mention of the seawater pump assembly.
Maybe I have the wrong unit