Re: (ET) ET No Go

["RJ Kanary" <rjkanary nauticom net>]

The fact that there is a large amount of current drawn, and the armature
resistors are turning red, it is safe to assume that the armature circuit 
is
intact.



RJ Kanary @ Bandi Bros. Inc.
Member TRNi  Since 1998
ASE® Certified Master Auto Technician
Member Tech Line Associates Since 1987
rjkanary nauticom net

----- Original Message -----
From: "Jim (fiskfarm)" <fiskfarm mediaone net>
To: "SteveS" <ssawtelle fcc net>
Cc: <elec-trak cosmos phy tufts edu>
Sent: Thursday, February 07, 2002 4:55 PM
Subject: Re: (ET) ET No Go


> Steve,
>
> Let me get this straight: The motor spins by hand? I would check the 
> brush
> continuity. Just like a car starter that has sat around, the brushes may
need
> to be jarred loose with a not so gentle tap of a hammer on the motor 
> case.
> (We've all had a car at one time with that problem) This is assuming that
you
> get no continuity reading thru them. (remove one of the 2 large wires and
test
> accross both terminals). Hell, there might not be any brushes, but I am
betting
> there are and they are stuck or insulated from the comutator with old
glazing.
> Worth a try as it might just be a little "glazing" on the armature thats'
> holding you back from that first ride!
>
> Let us know,
> Jim
>
> SteveS wrote:
>
> > Thanks for the suggestions.
> >
> > I forgot to mention that the motor spins free and quiet, so I discount
the
> > brake and transaxle, so sounds like I should look at the field circuit.
> >
> > The schematic I have shows a Varistor/Diode assembly. Is that part of
the
> > circuit board behind the control panel that has a bunch of SCRs and
diodes
> > on it? The schematic doesn't show all the other parts on the board, so
maybe
> > I have a newer or older model.
> >
> > Guess its time to trace thru the wires.
> >
> > - Steve
> > E12
> >
> > ----- Original Message -----
> > From: "David Roden (Akron OH USA)" <roden ald net>
> > To: <>
> > Sent: Thursday, February 07, 2002 10:46 AM
> > Subject: Re: (ET) ET No Go
> >
> > > On 6 Feb 2002 at 21:17, SWS wrote:
> > >
> > > > - Are the 10 and 49 wires the field connections?
> > >
> > > I don't know about the numbers (don't have my manual handy), but the
> > > smaller-diameter wires going to the motor are the field connections.
The
> > > larger ones are the armature connections.
> > >
> > > The symptoms you describe could be caused by an open connection in 
> > > the
> > > field circuit.  This could be the reversing relay, dirty connections,
or
> > > even an open field in the motor (unlikely).
> > >
> > > They could also be caused by a mechanical problem such as locked
brakes
> > > or a seriously munged transaxle.
> > >
> > > I recommend obtaining the Homeowner's Service Manual from Bill Gunn.
It
> > > has excellent troubleshooting flowcharts.  You'll also need a
multimeter
> > > (analog or digital).  You can get a suitable one for $40 or so at
Radio
> > > Shack.
> > >
> > >
> > > David Roden - Akron, Ohio, USA
> > > 1991 Solectria Force 144vac
> > > 1991 Ford Escort Green/EV 128vdc
> > > 1970 GE Elec-trak E15 36vdc
> > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> > > Thou shalt not send me any thing which says unto thee, "send this to
all
> > > thou knowest."  Neither shalt thou send me any spam, lest I smite
thee.
> > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> > >
> > >
>
>