From: kuhrick (kuhrick@comcast.net)
Date: Mon Jun 23 2003 - 04:41:49 PDT
you apply power too the field to polerzie it
that starts the mag field that will let the generator charge
At 08:06 PM 6/22/03 -0700, J wrote:
> I'm working on a M43 ambulance, which is pretty much the same as a
> M37. It won't charge the batteries now, for some reason. There is no
> voltage on the field or armature wires. I have a test kit (some short
> breakout wire cables) and found this by touching a 24v test light to each
> terminal. I have 24v entering the regulator, which is the newer style,
> all solid state unit. The generator itself seems to be fine, because it
> passes the 'motor test', where you put 24v on both the field and
> armature, and it spins up, just like a DC motor, which it actually is.
> This is not an alternator.
> I read several places that generators (not alternators) need to be
> repolarized after you reconnect them. I searched for "polarizing a
> generator" on GOOGLE and found these references. Click on
> http://bioengr.ag.utk.edu/Extension/ExtProg/Safety/Tractor/TechTips/PolarizeGenerator.html
>for the story.
> I made up a jumper and hit the armature with 24v for a fraction of a
> second as recommended. It still does not put out current. It could be
> the voltage regulator itself, but I'm trying to do whatever tests I can,
> first.
> Any ideas out there from those that have been in this position?
> Thanks. Jim
>
>
>
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