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Tractor Talk Discussion Board

Re: Momentary Swiths on Dash for Polarizing the Generator


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Posted by John T on November 04, 2022 at 05:50:55 from (45.16.200.171):

In Reply to: Momentary Swiths on Dash for Polarizing the Generator posted by Big_Guy on November 03, 2022 at 13:44:54:

Especially as long as the generator remains assembled, if alls well, POLARIZATION CAN REMAIN OKAY AND
UNCHANGED for months upon months,,,,,,,,,,Re-Polarization is NOT required prior to each tractor re
start,,,,,,,,,,,,,,Polarization is NOT necessarily required if battery is removed or replaced.

HERES WHY Polarization simply passes current through the field coils which imparts a degree of residual
magnetism in the soft iron poles at a certain North South magnetic polarity resulting in the certain + or
- Electrical polarity so it charges at the correct polarity to match the battery. When you remove the
battery thats the same as the VR's Cutout Relay opening which it should?? when the tractor shuts down IE
just because you remove the battery you dont need to re polarize (its already removed by an open cutout
relay)

Failure to charge can happen even if the genny is fine DUE TO A FAULTY REGULATOR

To determine the cause of non charging and see if its more likely a genney orrrrrrr a VR problem, try my
Troubleshooting Procedure linked below. If you want to install a method to polarize fine BUT I DONT THINK
THATS YOUR PROBLEM

https://www.yesterdaystractors.com/cgi-bin/viewit.cgi?bd=ttalk&th=2060825

Hope this helps

John T



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