[AT] question on use of resistor on coil

[Dean VP]

Cecil:

It is amazing how some suppliers can make things inordinately complex. I
sometimes wonder if it is deliberately done to frustrate us home mechanics
trying to force us to use shop labor. But it is just probably laziness of
the original vendor when marking and packaging the part. I see no reason to
label a coil 12 V when in application it is intended to be applied with 6V
nominal on it. 

It would make sense to me if a coil with an internal resistor was marked 12V
and one w/o marked 6V but I guess that would be too simple. 

However, I think your real problem is nothing more than a new set of points
would solve. 

Dean A. Van Peursem
Snohomish, WA 98290

I'm a walking storeroom of facts..... I've just lost the key to the
storeroom door 


www.deerelegacy.com

http://members.cox.net/classicweb/email.htm



-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Bigdog
Sent: Sunday, October 24, 2004 7:21 AM
To: Antique tractor email discussion group
Subject: Re: [AT] question on use of resistor on coil

Cecil, 
    To answer your original question:  The ballast resistor should be used
when using the coil on a 12 volt system.

Bigdog
  ----- Original Message ----- 
  From: Cecil E Monson 
  To: Antique tractor email discussion group 
  Sent: Saturday, October 23, 2004 5:05 PM
  Subject: Re: [AT] question on use of resistor on coil


  What gets me about this business, Charlie and Dean, is that
  the coil I just tried is listed as a direct replacement for not only
  AM791T but also for Delco Remy 1115379. I am just smart enough to know
  that something is fishy with this as this coil, #AM373T, is also listed
  in the Parts Catalog for my JD 2010 as the correct coil and we all know
  the 2010 was never anything but a 12 volt system.

  When you go to a JD dealer today and ask for a new coil for the
  40 or the 420 or the 2010, this is what you are going to get and whether
  you have a 6 volt system or a 12 volt system doesn't matter to the parts
  man.

  Getting back to my original question, are we supposed to use a
  resistor with the coil in a 12 volt system or when used in a 6 volt
  system?  I think the 12 volt system needs the resistor, not the 6 volt
  but the instructions say boldly on the box "must be used with a resistor"
  which is what puzzles me.

  FWIW, Dean, I have full sets of manuals for all of my JD tractors
  - all three of them. grins. I bought the manuals shortly after I bought
  each tractor so they would be as current with the model as possible.

  Cecil
  -- 
  The nicest thing about telling the truth is you never have to wonder
  what you said.

  Cecil E Monson
  Lucille Hand-Monson
  Mountainville, New York   Just a little east of the North Pole

  Allis Chalmers tractors and equipment

  Free advice

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