Welcome! Please use the navigational links on your left to explore our website.

Company Logo Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Classified Ads
Photo Ads
Tractor Parts

Community
Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Kountry Life
  
Allis Chalmers Discussion Forum
:

Allis chalmers c cut out

Welcome Guest, Log in or Register
Author 
Dustin hartmann

01-18-2008 05:58:42




Report to Moderator

I have a 1942 Allis chalmers c that i compleaty restored just finshed last summer.I turned on the lights and it blew both bulbs so i chcked the voltage and it said 8 volts. Is the the cut out acting up the genrator was rebulit but it is the orignal 1942 cut out. the cut out was ruff inside the cut out. but it was working at the time. what else could it be




[Log in to Reply]   [No Email]
jeffalex2

01-19-2008 03:10:57




Report to Moderator
 Re: Allis chalmers c cut out in reply to Dustin hartmann, 01-18-2008 05:58:42  
OK, I'll chime in...batteries can do what called "sulfating"...where a build up starts to form on the anodes of one or more cells. This effect sometimes reduces output current and increases charge voltage. That COULD be why you're getting 8 volts...only way to tell is swap out the battery unless you have an auto shop quality tester.

I think that the light deal may have been a fluke. Did ya check the voltage at the light socket to see? Analog meter is better for this cause it'll show a momentary jump in volts due to a flakey switch...a digital meter won't.

It'd take alot more than 8volts to instantly blow both bulbs. 8 volts would just make them nice and bright. Have to be more like 12volts.

John gave you alot of good advise too. This is the stuff that takes alot of patience when working on the old iron...

[Log in to Reply]  [No Email]
steve(ill)

01-18-2008 19:06:34




Report to Moderator
 Re: Allis chalmers c cut out in reply to Dustin hartmann, 01-18-2008 05:58:42  
a 6 volt generator can put out about 12-15 volts if you pull the cable off the battery. the battery acts as a "sink" and keeps the charge down to 7- 7.4 as the guys said... summary is the battery could be very low and need a deep charge, or the wire from ampmeter to battery is loose or corroded and the generator is overcharning (voltage wise). the power to the lights probably come off the generator side and not directly off the battery cable... i think i would start the tractor, turn on the light switch, and use a volt meter to see what is available at the head light wire- to ground. then let tractor charge for 20 minutes and see if it drops, or stays the same.

[Log in to Reply]  [No Email]
John T

01-18-2008 19:29:28




Report to Moderator
 Re: Allis chalmers c cut out in reply to steve(ill), 01-18-2008 19:06:34  
Sounds like we BOTH would sure like to know just where he is measuring that voltage, on the battery or genny if its NOT properly attached to the battery. The open unloaded voltage output of a genny can raise a good deal higher then when attached to a GOOD battery as you noted.

Hmmmmmmmm lol

JOhn T



[Log in to Reply]  [No Email]
John T

01-18-2008 08:16:43




Report to Moderator
 Re: Allis chalmers c cut out in reply to Dustin hartmann, 01-18-2008 05:58:42  
If that 8 volts you measured was on the battery, the cutout is working although 8 may be a tad on the high side, Id expect more like 6.5 to 7.5 volts or so max. Try it when shes NOT running n see if the bulbs glow realllll bright just momentarily then blow out??????????

I take it you have a 6 volt battery but wonder as posted below the genny is a 12 volt?? If so Id expect the battery voltage to rise higher then the more normal 6.5 to 7 and the lights would blow out when shes runing but NOT if shes just setting, assuming a 6 volt battery but a 12 volt genny.

If its a 12 volt converion you may have some other ignition issues like an ignition ballast may be needed or a 12 volt coil to be installed.

John T

[Log in to Reply]  [No Email]
Dustin hartmann

01-18-2008 08:35:01




Report to Moderator
 Re: Allis chalmers c cut out in reply to John T, 01-18-2008 08:16:43  
Everthing on the tractor is 6 volt including genrator



[Log in to Reply]  [No Email]
Dustin hartmann

01-18-2008 08:36:33




Report to Moderator
 Re: Allis chalmers c cut out in reply to Dustin hartmann, 01-18-2008 08:35:01  
it also has the correct light switvh



[Log in to Reply]  [No Email]
Bob

01-18-2008 07:01:44




Report to Moderator
 Re: Allis chalmers c cut out in reply to Dustin hartmann, 01-18-2008 05:58:42  
7.4 Volts IS a normal charging voltage for a "6-Volt" battery, so 8 Volts isn't far enough off that it should be instantly zapping bulbs.



[Log in to Reply]  [No Email]
George R. (MN)

01-18-2008 06:21:34




Report to Moderator
 Re: Allis chalmers c cut out in reply to Dustin hartmann, 01-18-2008 05:58:42  
Dustin,

Sounds to me like the tractor has been converted to 12 volts. If so you will need to change to 12v bulbs. If it is still a 6v system it could be the light switch is bad. For the charging system to work properly you need the original style three position resistor switch. Also, check to see that you have a good ground at the control box, battery, starter and generator.

Good luck, George

[Log in to Reply]  [No Email]
Dustin hartmann

01-18-2008 08:11:03




Report to Moderator
 Re: Allis chalmers c cut out in reply to George R. (MN), 01-18-2008 06:21:34  
nope it is still 6 volts.



[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


Today's Featured Article - Talk of the Town: Modern Diesel Fuel in an Old Tractor - by Staff. This interestin discussion is from the Tractor Talk Discussion Forum. Remember that safety is your first priority - make sure you know what you are doing before attempting a potentially dangerous activity! ... [Read Article]

Latest Ad: I have A narrow front end from 65 Massey and also a front guard for a 65 Massey call or e-mail for price. [More Ads]

Copyright © 1997-2020 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