Re: IML: 62 Alternator not charging

[randalpark@xxxxxxx]

Normally, I would completely agree here, but my recollection of the 
original post was that virtually everything had already been replaced 
except the alternator. Usually in a no charge situation, I check all of 
my connections, then test the alternator. If it checks out, I don't 
mind replacing the regulator since I can keep the old one as a spare if 
its good.

The two main reasons I have encountered this problem have been dirty 
connections or a failed alternator. I have never had a regulator go bad 
as far as I know.

Paul W.


-----Original Message-----
From: Geoff Fors <wb6nvh@xxxxxxxx>
To: mailing-list@xxxxxxxxxxxxxxxx
Sent: Mon, 24 Sep 2007 10:55 am
Subject: IML: 62 Alternator not charging



I suggest testing the components to avoid wasting money replacing things
which are still good.

There is a simple procedure shown in any Motor's Manual of the era which
will show you how to use a jumper wire to test the alternator.  By 
jumpering
it, you put the alternator into the full charge mode and bypass the
regulator.  If there's no output at that point, you can assume it's the
alternator/generator and not the regulator.  By following the test 
process
you won't replace any components which are still good.  I would explain 
the
test here but there are quite a few different setups out there and I 
can't
remember off the top of my head what the alternator and regulator look 
like
on the early ones.

In this case it could be the brushes have worn out on the alternator, 
or the
regulator has gone bad.  The big stud on the alternator with the big 
wire
should register charging voltage when the engine is running, and battery
voltage when off.

The small part you mention is an oil filled paper bypass capacitor 
which is
used to suppress alternator noise in the radio. You will probably have 
to
put that on a new alternator (if you indeed need one at all.)  I also
replaced my regulator with a transistorized version, as I found the 
contacts
inside the stock ones create radio static on weak stations, and this 
also
brought the charge level to a more even rate.

Geoff
Monterey CA


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