Re: (ET) help

["RJ Kanary" <rjkanary nauticom net>]

Since there have been so many 'updates', diagnosing the is unit remotely is
going to be virtually impossible, unless you can send photographs of what 
is
there, or are really good at observing a circuit, and drawing a schematic
from it.
     Having observed that handicap, lets get the batteries fully charged,
get the multimeter out, and start checking. Low system voltage will make 
all
sorts of gremlins surface.


RJ Kanary  Bandi Bros. Inc.
Member TRNi  Since 1998
ASE® Certified Master Auto Technician

rjkanary nauticom net

----- Original Message -----
From: "Tickners" <tickners valinet com>
To: <elec-trak cosmos phy tufts edu>
Sent: Saturday, January 04, 2003 11:37 AM
Subject: (ET) help


> My tractor just died while blowing snow. We got a ton and I didn't get 
> far
> at all before it died. I did some testing and initial R&R. My main
> disconnect was acting funny previously so I pulled that and cleaned it 
> up,
> works better now. The lift and PTO still work fine.
>
> What happens is when I put it in forward the L contactor just clicks. It
has
> 36V at the big lugs and when I put it in forward the small lugs get about
> 12-15V like the voltage supplied to the coil is rapidly switching. When 
> it
> first died it smelled hot and I stopped to check the blower motor and
drive
> motor with my hand. Then it would kind of edge forward in reverse and 
> edge
> in reverse in forward, now it does nothing. Since it's dead in my 
> driveway
> with about 16" of snow around it I tried jumping the L contactor coil 
> from
> the big lug to the small lug, just to see if I could get the thing to 
> move
> out of the way and it does the same thing, clicking. I thought maybe the
> contactor coil had partially shorted so I swapped the L contactor for the
2A
> contactor and it still does it.
>
> Now the fine print, I have an E15DA, and it seems like the wiring doesn't
> always match my shop manual. To compound that the PO had the reverse 
> relay
> die so he replaced that with a DPDT toggle, which has worked fine for the
> past 2 years. So to go in reverse you flip the toggle and push the speed
> control forward. Also, the brake switch and seat switch have been
bypassed,
> and he told me that he had disabled the 1st 2 speeds since he thought the
> resistors up front just wasted battery power. I agree and using low gear
on
> the transaxle works just fine, but I have never sat down and figured how
he
> did that.
>
> Thanks for any help
>
>