This sentence is correct ONLY WHEN generator CHARGING current has pushed the battery voltage so high as to no longer call for charging (typically ~14,4 volts); "The F terminal relay in the regulator is in an open position so there will be no voltage applied to the field coil by applying voltage to the A terminal of the regulator". Just as in the "A" VR, the field contacts in the "B" VR are closed in a static non-running situation, therefore appling 12v ( or 6v in 5v system) to the ARM terminal WILL in fact push current through the field coils. Note: the same is true of field contacts being closed at rest in both the "A" and "B" ckt VRs AND both will be carrying field polarizing current when voltage applied to the ARM terminal..........power path in "B" ckt & ground path in the "A" ckt.
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Today's Featured Article - A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
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