Posted by Janicholson on October 01, 2019 at 10:18:45 from (199.17.6.141):
In Reply to: Leader D tractor posted by Genmark on September 30, 2019 at 20:29:21:
If it is a Delco, or Prestolite, or other identifiable brand, you can find the voltage by an on line search. The Delco cutout system uses three wires It is an "A" circuit". If there are no lights, the generator is usually connected to a cutout with 3 terminals one will be labeled Bat, one will say ARM (or Gen), and the third will be Field, (FLD or F). Bat goes to the ammeter load side and from there to the starter switch battery side (10 gauge wire). ARM goes to Generator Armature (A) connection (10 gauge wire) the third is Field, and it connects to the Generator F terminal (12 gauge wire). This is a grounding of the field through a resistor to complete the field circuit (which gets its voltage from a third brush (or the hot brush) inside the generator. If lights, the light switch usually has multiple positions. The Delco switch uses 2 sections, one for light power, and the other for grounding the Field, as above but with the lights on gives full charge, with lights off, it gives a maintenance charge through a resistor, as though there were no lights. A "B" circuit (Autolite Prestolite quite often) uses cutout power (battery voltage through the F terminal to power the fields, which are grounded internally. To polarize an "A" type, Jump from Bat to Arm with a wire for 1 second. To polarize a "B: circuit generator, jump from the Bat to the "F" terminal. Jim
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Today's Featured Article - Field Modifications (Sins of the Farmer) - by Staff. Picture a new Chevrolet driving down the street without it's grill, right fender and trunk lid. Imagine a crude hole made in the hood to accommodate a new taller air cleaner, the fender wells cut away to make way for larger tires, and half of a sliding glass door used to replace the windshield. Top that off with an old set of '36 Ford headlight shells bolted to the hood. Pretty unlikely for a car... but for a tractor, this is pretty normal. It seems that more often than not they a
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