Battery charging problem.

[Wayne Kerr]

Houston; we have a problem.
Battery is okay but it's not getting a charge.
The V6 has 2 voltage regulators, 1 must be okay as the rev counter works.

How can I check the other?

Or could it be something before the regulator?

What's the test procedure peeps?

[Captain Chaos]

swap the grey wire on the loop to the unused grey wire on the 2nd voltage regulator and see what you get?

[Frenchbruno]

Hi,
Here a procedure to test the regulator on your merc 200 2.5 using analog multimeter.
I've also the procedure for digital multimeter.
and her the procedure for alternator too.
Hope this helps

[Wayne Kerr]

Originally Posted by Captain Chaos

swap the grey wire on the loop to the unused grey wire on the 2nd voltage regulator and see what you get?

I see what your saying here Captain, If the rev counter don't work on the 2nd regulator, that's the faulty item?

[Wayne Kerr]

Captain, finaly got back to checking for the problem.
I've swapped the grey wire from the top regulator to the bottom one, rev counter does not work.
Swapped it back, rev counter works.
No change in charging state either way.

Replace the bottom regulator?

[OCRDA]

You should only have one regulator and one Rectifier !! Grey Tacho wire is connected to one of the 2 yellow wires on the Rectifier. Swapping to the other yellow to see if it still works will indicate a fault but following the test in above post is more accurate.
Being a merc it is almost certainly the Rectifier anyway and not likely to be the regulator that should only have a Red & a Black wire to it.

[Wayne Kerr]

Bob,
I've got 2 units situated behind the trim solenoid plate, both have 2 yellows 2 reds and 1 grey.
The yellows go to the stator, the reds go to the starter solenoid, the upper grey goes to the tacho (lower grey is spare).
Where is the rectifier situated?

[OCRDA]

Maybe I am a bit out of touch but have not seen one with 2 Rectifiers before !!
Area seem right and I assume those are the only three terminals on them. Do you have any pictures of it ? do they look like this ?

http://t1.gstatic.com/images?q=tbn:A...HpZQtMXtjAqL-A

[OCRDA]

Mounted here ?

http://www.marineengine.com/discus/m...479/376515.jpg

[Techteam]

Are they 1 water cooled reg in the exhaust plate behind the coils and one "normal" type

[Wayne Kerr]

Originally Posted by Techteam

Are they 1 water cooled reg in the exhaust plate behind the coils and one "normal" type

Nothing is water cooled in this area ,,,,, unless a pipe bursts.

[Wayne Kerr]

I've got a couple of pictures but to large to post, can't remember how to re-size the feckers, work in progress!

[sinkunit0]

If its the 40 amp system these 2 regulators on the back of the engine . I removed them on mine when I went to 16amp and lightened fly wheel. I might still have them some where.

[OCRDA]

email to ocrda@btconnect.com

Bob

[Wayne Kerr]

Originally Posted by sinkunit0

If its the 40 amp system these 2 regulators on the back of the engine . I removed them on mine when I went to 16amp and lightened fly wheel. I might still have them some where.

Some confusion here, there are 2 regulators on a V6 but where is the rectifier?

[Marinautic]

There isn't one on your motor

[OCRDA]

How does it work without a Rectifier ?? I cant believe even mercury use a Dynamo !!

[OCRDA]

Originally Posted by Wayne Kerr

Some confusion here, there are 2 regulators on a V6 but where is the rectifier?

Is it not like this ??
http://www.marineengine.com/discus/m...479/376515.jpg

[Marinautic]

Originally Posted by OCRDA

How does it work without a Rectifier ??

Witchcraft

[Wayne Kerr]

Originally Posted by OCRDA

Is it not like this ??
http://www.marineengine.com/discus/m...479/376515.jpg

Link don't work Bob.