Re: need help with farmall 400

Posted by Alont on October 31, 2011 at 07:59:16 from (204.237.29.117):

In Reply to: need help with farmall 400 posted by John Seasly on October 31, 2011 at 06:47:11:

[What would happen if I changed it to a positive ground?]-You would straight away blow the diodes in the alternator and let all the smoke out-LEAVE IT AT NEGATIVE ground

[I did not change the fields in the starter]-Not required-starter is a series wound motor and will rotate in the same direction whether + or -ve ground

I have it neg. ground but I went to IH and they say positive ground on the 12 volt gas. Is that my problem?-NO YOU-PRESUMABLY-correctly changed it to Negative ground to fit the Alternator

I would guess your problem is a bad connection, somewhere in the wiring from the +ve battery terminal to the starter solenoid operating coil connection [Sometimes marked S]-you say there is no solenoid "click" when it fails.
So, whatever you do, don't change the Polarity and post back with the results of the checking for +12 volts at the solenoid S terminal on an attempted start.
Make sure you are not going to be run over etc if it does start

Good Luck

Alont

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