Davida, In response to your statement: "The A terminal is grounded to the housing"
As Bob M pointed out below THATS NOT EXACTLY SO its indeed very low ohms because those big copper armature windings and carbon brushes have very low resistance, therefore, many meters especially a non precision at low ohms unit, may read near zero ohms. The current actually flows from the ARM post,,,,,,, to the ungrounded brush,,,,,,through the armature,,,,,,,,,,,out the grounded brush,,,,,,,,,to case/frame.
ALSO to read the gennys output voltage you need to put the meter on the ARM post and case/frame NOT on the ARM and FLD posts.
Being Pos or Neg ground has nothing to do with FLD and ARM posts connections, the genny can charge at EITHER polarity. Once polarized to where the iron field poles have a certain North/South MAGNETIC POLARITY, when spun the genny will charge at the correct corresponding ELECTRIC POLARITY Pos ORRRRRR Neg.
So polarize it n spin it and put a meter on the ARM and case/frame and thennnnnnnnnnnnn see what voltage is produced ??? and/or run the Motor test I described below.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Harvestin Corn in Southern Wisconsin: The Early Years - by Pat Browning. In this area of Wisconsin, most crops are raised to support livestock production or dairy herds in various forms. Corn products were harvested for grain, and for ensilage (we always just called it 'silage'). Silo Filling Time On dairy farms back in the 30's and into the first half of the 40's, making of corn silage was done with horses pulling a corn binder producing tied bundles of fresh, sweet-smelling corn plants, nice green leaves with ear; the
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
