[Farmall] Generator/regulator update: Eyes open

[John Paur]

Jim is correct here about charging an 8 volt battery.  The generator would
have to put out more than 8 volts, preferably 8.5+ volts and likely your 6
volt generator will only do about 7 volts+/-.
John

----- Original Message -----
From: "Jim Becker" <jim.becker at verizon.net>
To: "Farmall/IHC mailing list" <farmall at lists.antique-tractor.com>
Sent: Saturday, September 09, 2006 9:08 PM
Subject: Re: [Farmall] Generator/regulator update: Eyes open


> The switch you have will work fine.  Wire it NOT using the switch to
control
> the field.  Hard wire the generator F to a direct ground on the generator.
> Then the ground of the light switch won't make any difference.  Wire the
> rest of it using the cut-out diagram.  This MAY charge the 8-volt battery.
>
> If you get it charging this way, you can IF YOU WANT then try wiring the
> generator F to the light switch to get the H L to work.  Then the switch
> will need to be grounded.
>
> I doubt that it will charge an 8-volt battery if you us the regulator as a
> regulator.
>
> Jim Becker        jim.becker at verizon.net
>
> ----- Original Message -----
> From: "Dean Vinson" <dean at vinsonfarm.net>
> To: "'Farmall/IHC mailing list'" <farmall at lists.antique-tractor.com>
> Sent: Thursday, September 07, 2006 11:38 PM
> Subject: [Farmall] Generator/regulator update: Eyes open
>
>
> > Okay, if I get "hit with the obvious bat" again, it's going to start
> > leaving
> > a mark.
> >
> > I took the switch box off the tractor, cleaned it all up, wire brushed
it
> > where the cover grounds to the box itself, shined up all the contacts,
and
> > methodically tested each position of the switch, the ammeter, etc.
> > Ammeter
> > works.  Dim and bright positions on the light switch work.  So I'm
sitting
> > there staring at it, not seeing anything wrong at all, when it occurs to
> > me
> > that those other positions on the switch aren't what I remember from the
> > Super M I'd had a while back.  That switch just had Off, Dim, and
Bright.
> > This one has Dim and Bright but also H and L.  Hmmmm.  Better go look
and
> > make sure I know what those are supposed to do.
> >
> > So, of course, big as life in the operator's manual that I've only read
> > about a hundred times over the years, is the section about the various
> > types
> > of starting equipment.  I have a switch intended for use with a cutout
> > relay, so the H and L are High charge and Low charge.  In that system,
the
> > wire from the switch is grounded and runs to the F terminal on the
> > generator, directly grounding it either with or without a resistor
> > depending
> > on whether the switch is set to Low or High.
> >
> > But instead of a cutout relay, I have a voltage regulator.  Tractors
with
> > regulators are supposed to only have the Off, Dim, and Bright switch,
> > since
> > the regulator controls the charging rate.  In that system, the wire from
> > the
> > switch runs to the L terminal on the regulator.
> >
> > So I'd wired the switch as if it were grounding the generator F
terminal,
> > and I'd wired the regulator as if the switch was supposed to connect to
> > the
> > L terminal.  Result:  Grounded L terminal, which is common with the BAT
> > terminal, which meant the battery was directly grounded, resulting in
the
> > hot wire and big discharge I'd seen on the ammeter yesterday.
> >
> > Seems to me now, the thing to do is buy the correct switch and start
over
> > with the wiring.  Yes?
> >
> > The other thing I noticed tonight is that the battery is an 8 volt
rather
> > than 6.  It's nice and new, which explains why the tractor will start
even
> > though the charging circuit is dorked up.  Assuming I eventually get
> > everything else set up correctly, will a six-volt generator and
regulator
> > keep an 8 volt battery working?
> >
> > Dean Vinson
> > Dayton, Ohio
> > www.vinsonfarm.net
> >
> >
> >
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