720 generater

This is one method of testing a generator.

Remove the lead wire from the voltage regulator to the A - Armature terminal.

Remove the lead wire from the voltage regulator to the F - Field terminal.

Take a look at the photos below.

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Attach one end of a jumper wire to the F - Field terminal and ground the other end of the jumper wire.

a168347.jpg" width="650"


Start the tractor.

Using a voltmeter, attach the RED lead to the A - Armature and the BLACK lead to ground on the tractor.

The volt meter should display a voltage reading greater than the battery.

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Hope this helps.
 

I just loosen off the fan belt and take the cover off the regulator . Then take something non conductive and push the cut out contacts together , the generator should spin as a motor.
Now open the field contacts while the cut out is still be held closed and the generator is "motoring" over, the rpm should increase.
No fuss, no muss .
 
I never thought about anyone getting hurt, but if the ground is on the outside of the battery box. and connected to the rockshaft housing that might not be dangerous place to take it off?? what you think?? we don.t need anyone getting hurt that first statement I made might be bad advice, sorry. I've had two batteries blow up from loose connections not something you should ever have happen to anyone.
 
Heres how to test a charging system to see if non charging is due to the Genny or the Voltage Regulator or elsewhere. It includes the field grounding test as well as the Motor test.


http://www.ytmag.com/cgi-bin/viewit.cgi?bd=jd&th=458743

John T
John Ts Charging Troubleshooting
 

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