CORROSION PROTECTION - ALL MODELS
SERVICE MANUAL NUMBER 28
Low Readings (continued)
Cause
Special Instructions
Faulty MerCathode reference electrode.
Disconnect the reference electrode
lead(brown) from the controller “R”
terminal. Connect the lead to the positive
(+)
0-2000
terminal of a digital multimeter (set on
millivolt scale). Connect the
negative (–) meter lead to the negative (–)
battery terminal. Note the meter reading;
then repeat the test using a MerCathode
Reference Electrode Tester 76675A1. You
should obtain the same reading in both
cases. If not, replace the reference
electrode.
Faulty MerCathode Controller.
With anode and reference electrode leads
connected to the controller, connect the
jumper wire between “R” and negative (-)
terminals on the controller. Connect the
positive (+) lead of the volt meter (set on
0-20
scale) to terminal “A” on the
controller. Connect the negative (-) meter
lead to the negative (-) controller terminal.
ReadingD FreshwatershouldAreasbe as-follows:
Electrodes Mounted on boat transom: 7.5
-
Electrode mounted on bottom transom
10.5 Millivolts
assembly:D Saltwater6.2Areas- 11.8- Millivolts
Electrodes mounted on boat transom: 8.8
-
Electrode mounted on bottom of transom
assembly: 7.5 - 11.8 Millivolts
10.5 Millivolts
If the reading is low, replace the controller.
Additional corrosion protection required.
Install additional anodes or MerCathode
Boats equipped with a sizable amount of system 88334A2. If the unit is already
underwater metal (stainless steel prop,
after planes, etc.), or that are moored in
an area with warm or rapid flowing water
may require additional protection.
equipped with a MerCathode system, a
second system may be required.
INDEX
Page 7A-20
90-863160 MAY 2000
| 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