Posted by Steve@Advance on July 31, 2015 at 20:14:44 from (107.203.134.67):
In Reply to: Oliver electrical posted by deputy dog on July 31, 2015 at 19:19:31:
The Oliver was originally 12v positive ground (according to Tractor Data). If so, it would have been switched to negative ground when the alternator was added.
The amp meter not working...
If it works backward, just switch the wires on the back of the amp meter.
If it doesn't move, possibly it was not properly wired when the alternator was added. This is a simple diagram of how it's wired. http://ww2.justanswer.com/uploads/indytech/2012-03-25_215414_ammeterwiring.jpg
If it's wired properly and doesn't move, or the needle doesn't return to center when the load is removed, the gauge is bad.
Some fuel gauges are polarity sensitive. The way to test it is to remove the gauge wire from the sending unit on the tank. With the ignition on, the gauge should now read empty. Next, connect the wire to a known good ground. The gauge should read full. If it passes this test, the sending unit in the tank is bad. (Be sure the tank is grounded, some are rubber mounted and require a ground wire.)
If the gauge fails this test, either the gauge is defective, it's not wired correctly, or it is polarity sensitive.
Replacing the gauge with a negative ground gauge can be tricky. The gauge must be matched to the sending unit with the proper resistance to work properly.
Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 - 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
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[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.
