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Alternator Output

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DW1 View Drop Down
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    Posted: May-06-2019 at 7:46pm
CC 200 alternator issue: friends boat has quit charging the battery, dash voltage slowly dropped as the boat was running until of course it would not start. Removed alternator, tested at 16 volt output which seems to indicate the reluctor / regulator is bad.

Question: Since there was too much voltage output from the alternator and the battery was not being charged based on the dash reading, can anybody tell me if there is either a fuse or relay in the circuit that may be faulty? Is there a wiring diagram for a CC 200 available online? Thanks for any suggestions.
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2001 View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote 2001 Quote  Post ReplyReply Direct Link To This Post Posted: June-02-2019 at 3:33am
Originally posted by DW1 DW1 wrote:

CC 200 alternator issue: friends boat has quit charging the battery, dash voltage slowly dropped as the boat was running until of course it would not start. Removed alternator, tested at 16 volt output which seems to indicate the reluctor / regulator is bad.

Question: Since there was too much voltage output from the alternator and the battery was not being charged based on the dash reading, can anybody tell me if there is either a fuse or relay in the circuit that may be faulty? Is there a wiring diagram for a CC 200 available online? Thanks for any suggestions.


The Charging system on your Boat IS; The Battery, Regulator, Rectifier, Stator, Armature,
Radio static suppression condenser, the system which turns the charging system on which is usually the Key switch but, could also be the onboard computer system, the proper system load and the properly balanced system of properly sized wires.   
Contact your dealer when adding electrical items.

The Charging system on your Boat is NOT a Battery charger or for charging a dead or low battery or Jump starting another boat. The charging system is for maintaining the on board battery and the boat systems. A low battery is; anything less than 12.6 volts
while disconnected and has been disconnected for 24 hours.

Yes, there is a system rest button on the back of the engine AND a breaker switch on the dash, system logon or up under the dash a system lock out.

Yes, the rest button May have tripped (as in your case), making the battery go dead, the boat would continue to run but, not start and the Alternator May have survived. The 16 volts output May be because, of improper load testing as in you tested an "open circuit"
and or only one side of the rectifier is working.

Also, please note: Marine Alternators are fairly well built and boats are not used enough to actually wear out an Alternator or an Engine. Failure is always Due to over loading, over RPM for too long, sinking, freezing weather, water damage and lack of use which equates to dead Batteries, Bad Gas, Bad starters, Bad Charging systems, Bad Engines, Cracks and Rust.
Most people neglect the usually rusty ground cables which will lose contact and also burnout the Charging system.
Some people like to remove the Alternator output wire from the rest button and connect the same wire directly to the Battery+ and then the Battery terminals become rusty and the Alternator looses connection damaging the Charging system.

There are a number of things that could happen to a charging system; Too much system load due to added accessories will trip the rest button. Too much system load due to low battery can also trip the rest button. A malfunctioning charging system will trip the Rest button or vis-versa When the rest button trips while the engine is running, the Charging system has no load and burns out the charging system.

The regulator dose NOT regulate or rather cannot regulate without a Battery "Load" in the circuit or for that matter the system voltage is governed for the most part by the Battery.

The regulator has one function;
The regulator varies the Alternator output by variable magnetic field voltage. Hence it's named "Regulator".

In the case of a Generator the Regulator actually turns the generator on and off
or though resistance regulates the system voltage.

In few cases the Regulator fails and the output of the Alternator goes to Max voltage
and burns out one side or the other of the Rectifier or in few cases both sides or in very few cases burns out the Stator.
In most cases the Rectifier fails because, the regulator is telling Alternator to output full voltage for too long causing too much heat, is constantly charging a low battery and battery never gets to full charge due to the Boat isn't used everyday like a car, All boats Need a Battery maintainer.

Most outboards do NOT have a regulator and the system voltage IS regulated solely by the Battery.
1988 2001 Ski Nautique
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8122pbrainard View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8122pbrainard Quote  Post ReplyReply Direct Link To This Post Posted: June-02-2019 at 9:28am
Originally posted by 2001 2001 wrote:

Yes, there is a system rest button on the back of the engine AND a breaker switch on the dash,

Phil,
The "rest button" you refer to, do you mean the RED button? Unless you like to rest your alternator, I think you meant to say the red button on the main overcurrent protection device.


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77 Tique

64 X55 Dunphy

Keep it original, Pete
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Duane in Indy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Duane in Indy Quote  Post ReplyReply Direct Link To This Post Posted: June-02-2019 at 11:49am
Originally posted by 8122pbrainard 8122pbrainard wrote:

The "rest button" you refer to, ]


Think he forgot the second "e" in reset.
Keep it as original as YOU want it
        1978 Mustang (modified)
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KENO View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote KENO Quote  Post ReplyReply Direct Link To This Post Posted: June-02-2019 at 1:04pm
Originally posted by 2001 2001 wrote:


Most outboards do NOT have a regulator and the system voltage IS regulated solely by the Battery.


You must be talking about some old small antique outboards here, otherwise a whole bunch of those semi modern ones and the later really modern ones have an extra useless
part under the cowl

You might want to clarify that statement
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Duane in Indy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Duane in Indy Quote  Post ReplyReply Direct Link To This Post Posted: June-02-2019 at 1:38pm
Mine has a one wire alternator with a built in "extra useless" part inside it.
Keep it as original as YOU want it
        1978 Mustang (modified)
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8122pbrainard View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8122pbrainard Quote  Post ReplyReply Direct Link To This Post Posted: June-02-2019 at 1:51pm
The 25 Yamaha on my Alumacraft wasn't charging the battery so I ripped this thing out and now it's great. It charges the battery up twice as fast



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Keep it original, Pete
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