Re: (ET) E12 lost power

[Jim Coate <jbc coate org>]

In general the drive motor is the last thing I'd suspect (anyone ever 
blown one?), so I'd agree with the plan to check the field circuits very 
carefully. If the motor did burn out, I'd expect it to smell terrible so 
it would be obvious.

But as long as you have the motor off, could test it as a confidence 
booster. Hook the field to 12 volts, then hook the armature to 12 volts 
and watch it go.


Richard Zachary wrote:
> Put in new solenoid coil at 1F just 3 weeks ago and everything seemed 
> fine.  Mowed weekend before last and everything was like new.     Went 
> to mow today and seemed fine for two seconds, it went about a foot and 
> half, and then POW! everything stopped.  99.9% of power lost (very 
> slight amount of movement possible both forward and back, but the power 
> usage gauge was pinned to the highest point).  Noticed an electric 
> smell, and found a lot of heat up front.  Three coils in front of the 
> charger where RED and giving off loads of heat.  One of the large wires 
> coming off coil 2F was also hot.
> I tried the PTO switch and the mower deck by itself ran just fine, 
> leading me to believe that the batteries are OK.
> Pulled the motor off and tested the resistance across the two main 
> connection posts.  The meter went to the top indicating a short across 
> these posts.
> Had the motor redone with new bearings, brushes, rotor cut in April.
> Question is, could it be something other than the motor?
> Thanks in advance for any advise,
> Richard "Zack" Zachary
>
>
>
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--

_________
Jim Coate
1970's Elec-Trak
1992 Chevy S-10 BEV
1997 Chevy S-10 NGV
http://www.eeevee.com