[Farmall] Oliver Cletrac HG Question

[James & Linda Whittington]

I like to watch,and sorta keep quite.This all is very important,whats 
written below!! If the coil is reversed,the spark on the plug will jump 
backwards,from the ground side (tang to tip),instead of from tip to 
tang,which will make the engine preform not as good as 
possible.Also,these old systems,would cut down on electrolis,with the 
positive ground.So,there is many things,going for a proper system.JimW

Mike Sloane wrote:

> Two points:
>
> 1. While your old tractor will work fine if the battery is installed 
> backwards, you will have to polarize the generator to get it charging 
> properly. At least that has been my experience. (The voltage regulator 
> and starter are polarity insensitive, as are the lights. You can live 
> with "wrong" ammeter indication, but it is a good idea to reverse the 
> wires and keep everything "sane".)
>
> 2. While the tractor will run with no other changes than above, it 
> will not run well until you reverse the coil connections. Automotive 
> coils are "auto transformers" with both high and low voltage common on 
> one side. It is my understanding that the running them reversed will 
> degrade spark voltage significantly. Fortunately, it takes only a few 
> seconds to reverse the wiring on a coil - make sure that the wire 
> connected to the distributor goes to the terminal marked the same as 
> your ground (if you battery is negative ground, connect that wire to 
> the terminal marked with a "-" and the wire from the switch to the "+" 
> terminal).
>
> BIRDDOG wrote:
>
>> In most cases, John, I do not think re-polarization would be 
>> necessary.  The only time I have had to do it is with a new 
>> installation.  I have to be honest and state that when and why to 
>> polarize has always been a bit of a mystery to me.   I have never had 
>> a full understanding of the subject.
>> Charlie
>>
>> John McDevitt wrote:
>>
>>> Thanks Charlie.  Good to know that.  I believe it does have an ammeter.
>>> If we did hook it up wrong, would we have to re-polarize then generator
>>> after hooking it up correctly?
>>>
>>> Thanks,
>>>
>>> John
>>
>