Hay Banjoman, First, the way I (an Electrical Engineer) was taught and for many many years on many many different tractors (I was a used tractor dealer in the past and used or farmed with many different tractors over 40 years ) I ALWAYS SUCCESSFULLY polarized a generator depended on if it were a Class A (IHC, Deere, Oliver, others) or a Class B (some Fords and some Massey Harris and others) charging systems.
POLARIZATION imparts a degree of the correct residual North South magnetic field into the soft iron field poles by passing current THROUGH THE FIELD WINDINGS which circle the poles. THEREFORE ALL YOU DO IS PASS MOMENTARY CURRENT THROUGH THE FIELD WINDINGS which imparts a degree of residual North South magnetism.
1) That being said for a Class A I used a jumper wirer to momentarily flash/jump from BAT over to GEN/ARM which passed current through the field windings imparting a North South magnetic field.
2) That being said for a Class B I removed the FLD wire and momentarily jumped it over to BAT which passed current through the Field windings imparting a North South magnetic field.
WHY THE FIFFERENCE On a Class B the other end of the fields are grounded so if you apply voltage (such as present on the VR's BAT) to the FLD post you pass current through the field windings to polarize..............On a Class A if you apply hot battery voltage (such as on the BAT) to the GEN/ARM terminal you pass current through the field windings to polarize. On a Class A the fields get their eventual final ground via the VR's connection (via its control relay action) to ground........On a Class B the fields are internally grounded......THATS WHY AND HOW YOU POLARIZE DIFFERENTLY
NOTICE this is how I learned and how I did it SUCCESSFULLY Im NOTTTTTTT saying there may or may not be other methods that work. This is ONLY how I do it and I tried to explain why and how it works so each are free to DO IT HOWEVER THEY PLEASE is fine by me
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Today's Featured Article - Tractor Profile: Oliver 70 Row Crop - by Staff. The Oliver 70 was part of the "Fleetline Series" and was manufacturered from 1937 to 1948. The row-crop configuration could have either dual or single front wheels. The Oliver 70 was also offered in the standard, orchard and industrial configurations. The tractors were sold in Canada. An early advertisement states "Power when you want it - power when you need it - power to help put in crops when field conditions are right and time and help are limited. That's the power you'll find in an Oliv
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