Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Allis B
:

Glowing where it's not supposed to

Welcome Guest, Log in or Register
Author 
Scott M

08-21-2000 20:07:01




Report to Moderator


Well, you guys helped me through the governor thing and for that, thanks. Now on to the new thing. When the light switch is in the off position and the tractor is running at medium to higher RPMs, the resistor on the bottom of the switch is glowing. Assuming the this tractor didn't come with a cigarette lighter option installed, what would make it do this? BTW, it is getting hot enough that it is beginning to melt the insulation on some of the wiring inside the box. At low beam position or high beam position, no glow. Why is it getting so hot? Is this normal? Also, even though the bulbs are good, they will not light up with the switch. Are the problems related? If so, how?

[Log in to Reply]   [No Email]
Ted Seifert

08-22-2000 09:51:23




Report to Moderator
 Re: Allis B - Glowing where it's not supposed to in reply to Scott M, 08-21-2000 20:07:01  
The resistor is in series with the field winding of the generator ONLY in low charge. In all other switch positions the resistor is shorted out and the generator is in high charge. Look for a short to ground (chassis) for the wire going to the "F" terminal of the generator. Look for misswiring or a shorted field in the generator.

Good luck.



[Log in to Reply]  [No Email]
Scott Murphy

08-24-2000 11:23:38




Report to Moderator
 Re: Re: Allis B - Glowing where it's not supposed to in reply to Ted Seifert, 08-22-2000 09:51:23  

That explains why it only gets hot when the switch is in the closed position. It still doesn't seem like it should get that hot (in the closed position) unless there is a problem somewhere else. Would a short on the "F" terminal wire or in the generator cause the extra load across the resistor or should I look elsewhere?



[Log in to Reply]  [No Email]
Karl in MD

08-21-2000 21:42:56




Report to Moderator
 Re: Allis B - Glowing where it's not supposed to in reply to Scott M, 08-21-2000 20:07:01  
I don't think it should get hot enough to glow, but charging resistors do get hot. The reason it doesn't get hot with the lights on is that it's not needed. The lights use enough juice that the generator's full output is used (probably about 8 amps). Without the lights, and with the resistor in the circuit, it limits the generator's output to @2-3amps. The excess amperage is dissipated as heat. If it's getting hot enough to melt insulation, the resistor is bad, possibly shorted, and could, over time, damage the generator (especially if it burns out and allows an open circuit, which will fry the generator windings). Sorry so windy, hope this helps; Karl

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
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 ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

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.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy