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 Chalmers Discussion Forum
:

Allis B ampmeter not reading current

Welcome Guest, Log in or Register
Author 
Al S

05-14-2008 13:29:27




Report to Moderator

Light switch operates the lights: however, no + or - movement in the needle. Have slaved a new guage to it, and at high idle still no movement. Battery stays up on its own (so no short)! Generator puts out 6v to light up a test light. At low idle and operating the light switch, one can hear engine load when generator cuts in. Light switch is supposed to read: low charge, high charge, and operate lights. What is the most likely problem ?

[Log in to Reply]   [No Email]
John T

05-15-2008 05:48:20




Report to Moderator
 Re: Allis B ampmeter not reading current in reply to Al S, 05-14-2008 13:29:27  
If your charging system uses a simple 2 wire Cutout Relay and the combination Low/High charge and light switch YES it should charge at a low rate on LOW and a higher rate on HIGH. For that to happen the light switch needs a good ground, be working, and the wire from the gennys FLD post wired to the switch correctly.

If you temporarily jump the gennys FLD post dead to ground that should make her full/high charge and if it does but NOT when using the switch, the switch is bad or miswired or not grounded or the wires bad from genny to the switch.

As posted below an ammeter wont read the correct charge into the battery or out of it unless the battery is on the Supply side while the gennys output (its ARM post via the cutout relay) is on the other Load side.

Regardless if the ammeter is wired right or works if she is indeed charging the battery voltage should rise from 6.3 volts setting (or low idle) to 6.5 to the 7 range at wide open..... John T

[Log in to Reply]  [No Email]
John T

05-15-2008 05:46:33




Report to Moderator
 Re: Allis B ampmeter not reading current in reply to Al S, 05-14-2008 13:29:27  
If your charging system uses a simple 2 wire Cutout Relay and the combination Low/High charge and light switch YES it should charge at a low rate on LOW and a higher rate on HIGH. For that to happen the light switch needs a good ground, be working, and the wire from the gennys FLD post wired to the switch correctly.

If you temporarily jump the gennys FLD post dead to ground that should make her full/high charge and if it does but NOT when using the switch, the switch is bad or miswired or not grounded or the wires bad from genny to the switch.

As posted below an ammeter wont read the correct charge into the battery or out of it unless the battery is on the Supply side while the gennys output (its ARM post via the cutout relay) is on the other Load side.

Regardless if the ammeter is wired right or works if she is indeed charging the battery voltage should rise from 6.3 volts setting (or low idle) to 6.5 to the 7 range at wide open..... John T

[Log in to Reply]  [No Email]
Bob Bancroft

05-14-2008 17:14:43




Report to Moderator
 Re: Allis B ampmeter not reading current in reply to Al S, 05-14-2008 13:29:27  
Either wiring or a bad ammeter. Wire bringing voltage from the batt. should be alone on one side of the ammeter. Wire from gen/cutout should be on other terminal along with any load wire. Then all you are measuring is what is coming from the batt.( Or going to it when charging.) Pull the lights on with the engine off. You should get a discharge. If you show charge, switch the wires on the ammeter. If ammeter shows no response- get a new one!

[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