Re: (ET) Re: pack not isolated from frame??

["T Humphrey" <thumphrey mynra com>]

Red-orange paint huh?  It may be an I-5, they do use frame 
grounding, on the horn circuit.




---------- Original Message ----------------------------------
From: Humphrey Timothy H Contr AFRL/IFEC 
<Timothy Humphrey rl af mil>
Date:  Mon, 26 Jan 2004 17:22:17 -0000

>
>
>-----Original Message-----
>From: Dave & Debbie Barden [mailto:daveb seanet com] 
>Sent: Monday, January 26, 2004 3:39 AM
>To: rjkanary nauticom net; tcoate coate org; elec-
trak cosmos phy tufts edu;
>daveb seanet com
>Subject: (ET) Re: pack not isolated from frame??
>
>
>because of some red-orange paint I thought for a while it might 
be a
>wheelhorse 
>but the the GE symbol is there on the front grill.  there's no 
hole up front
>
>where the PTO plug may've been. The tractor has been painted JD 
green
>including 
>the name plate on top of the dash unfortunately and the data 
plate under the
>
>hood isn't there.  Unless I can get some info off the painted 
plate atop the
>
>dash I'm afraid all I'll have to go on is physical description.  
the
>tractor's 
>on the island and it'll be friday before I can get there again.
>
>thanks for the warning/confirmation that I've a dangerous 
situation that
>must 
>be fixed immediately.  I'm taking that to heart...
>
>dave
>seattle
>
>>       As my Dad, the electrician who had 30 years of experience 
with 
>> DC operated overhead cranes would say, "Son, you've got 
something 
>> that's 'gone to ground'."
>>     {Actually, in most cases two items have to fail to make 
obvious 
>> symptoms.}
>> 
>>     The most common culprits in the Elec-Trak(r) are.......
>> 1.) Armature resistor contactor bushings.
>> 2.) Armature terminal bushings on the traction motor, or brush 
>> rigging.
>> 3.) Lift motor.
>>      This situation is VERY dangerous, and must be investigated 
and
>repaired
>> immediately.
>>     I have never seen a tractor with the PTO outlet where you 
have
>described
>> it. Give us the numbers from the data plate, under the hood, 
and I think
>we
>> can puzzle it out.
>> 
>> ----- Original Message -----
>> From: "Dave & Debbie Barden" <daveb seanet com>
>> To: <rjkanary nauticom net>; <tcoate coate org>;
>> <elec-trak cosmos phy tufts edu>
>> Sent: Sunday, January 25, 2004 2:54 PM
>> Subject: pack not isolated from frame??
>> 
>> 
>> >
>> > I was working on my modified E15 (?) today, and while 
loosening a
>> connection on
>> > one the cable connections I grounded to the body with the 
wrench and 
>> > got
>> an
>> > ugly juicy spark.  That doubly surprised me because I am 
always 
>> > careful
>> around
>> > battery terminals and potential grounds but also because I 
thought 
>> > that if
>> the
>> > pack was not grounded to the frame you wouldn't/shouldn't get 
>> > current
>> flow??
>> >
>> > So what gives here am I under a mis-impression and showing my 
>> > ignorance or
>> do I
>> > have a ground somewhere that I shouldn't have??
>> >
>> > Also since this tractor has been modified by the previous 
owner I 
>> > don't
>> really
>> > know what model it is.  My E12S has the PTO plug up front on 
the 
>> > left.
>> This
>> > one has the PTO plug down by my right foot.  Would this be an 
E15 or 
>> > E20
>> or???
>> >
>> > thanks much,
>> > dave
>> > Seattle
>> > E12S
>> > E?? modified
>> >
>> >
>> >
>> >
>> >
>> >
>> 
>> 
>
>
>
>
>
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