Yesterday's Tractor Co. Trusted Parts Supplier since 1995
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Tractor Manuals
Tractor Parts
Classified Ads
Photo Ads

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
TractorLinks.com
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Enter your email address to receive our newsletter!

subscribe
unsubscribe
  
Restoration & Repair Tips Board

1950 john deere late model b electrical help

Author  [Modern View]
carl zuch

03-20-2012 17:07:48
205.213.104.146



Report to Moderator

hello all, i am new here. i am 28 and just bought my first old tractor to restore a 50 john deere late model b . problem is when i shut the tractor off, the ammeter shows i am drawing current. some one in the past took the wires off the voltage regulator. the regulator is a 3 terminal. can anyone tell me what wires are supposed to be connected where, or if this regulator will work. it has a field, generator, and battery terminal. i have read a couple places you need a special light switch for it to work. mine just has a plain toggle switch. they had the field wire on the generator grounded. also the starter turns over very slow, too slow to start the tractor even with a brand new, fully charged battery. (i disconnected the generator to keep if from draining the battery) what might be wrong with the starter. thank you very much for the help........... carl

[Reply]   [No Email]
J.Wondergem

03-21-2012 06:31:06
166.249.105.250



Report to Moderator
 Re: 1950 john deere late model b electrical help in reply to Ryan Roberts, 03-20-2012 17:07:48  
Quoting Removed, click Modern View to see
And after doing everything John T said, if the starter still rolls the motor over slow, it probably needs to be rebuilt.



[Reply]  [No Email]
John T

03-21-2012 06:45:41
71.52.192.218



Report to Moderator
 Re: 1950 john deere late model b electrical help in reply to J.Wondergem, 03-21-2012 06:31:06  
Ya know some of those 6 volt starters dont exactly set the world on fire when it comes to cranking speed anyway EVEN IF ALL IS IN GOOD SHAPE

Big heavy high CCA battery,,,,,,,00 Gauge Cables,,,,,,,,EXCELLENT cable and battery and especially frame ground connections,,,,,,,,,are allllllll a must and then as you note starter OR START SWITCHES ALSO may need attention..

Fun chat, hope were helping

John T

[Reply]  [No Email]
carl zuch

03-21-2012 15:31:58
66.189.138.81



Report to Moderator
 Re: 1950 john deere late model b electrical help in reply to John T, 03-21-2012 06:45:41  
hi guys, thanks for the help. apparently the starter is turning over just fine. started the tractor today with no problems. i am just used to 12v systems. this tractor is the first time i have seen a 6v system in action. about the generator. i will hook it up like you guys said. as of now i unhooked the generator to keep it from discharging the battery. i get the tractor back to my house tommorow so i will hook it back up and see what happens. thank you........... carl

[Reply]  [No Email]
John T

03-20-2012 17:30:45
71.52.192.218



Report to Moderator
 Cutout Relay sticking in reply to carl zuch, 03-20-2012 17:07:48  

Okay if when you shut it down she draws a heavy discharge current, the cutout relay (inside of and a part of the Voltage Regulator between its ARM/GEN and BAT terminals) may be sticking closed, in fact if the belt were loosened the genny would sit there and run like the DC motor it is. That will discharge the battery plus make the genny hot. Its supposed to open when the tractor is shut down and close once the genny is turning and is producing sufficient voltage.

The tractor originally had a 4 (NOT 3) terminal Voltage Regulator with BAT LOAD FLD and GEN/ARM terminals with GEN/ARM off on one side or underneath all by itself. They wire:

BAT to load side of ammeter LOAD feeds hot battery voltage up to the light switch FLD wires to gennys FLD post ARM/GEN wires to gennys ARM post

If its really a 3 wire VR

BAT to load side of ammeter GEN/ARM to gennys ARM post FLD to gennys FLD post

On the older systems that used a simple 2 wire Cutout Relay (BAT and GEN) with no 3 or 4 terminal VR, the gennys FLD post wired to a Low/High Charge manual light switch which could be set for low or high charge. On the new systems with a VR the light switch controlled lights only but NOT charge rate.

If she cranks slow Id remove, clean and wire brush and re attach each and every battery and starter and ground cable and for 6 volt systems I prefer 0 better yet 00 Gauge cables for better cranking PLUS a high CCA heavy duty battery. Also a good ground to the frame versus a thin wimpy sheet metal seat box is better. CHECK THE GROUND CABLE AND THE REST OF THE BATTERY AND STARTER AND CABLES AND AT THE BATTERY

John T

[Reply]  [No Email]
carl zuch

03-23-2012 05:42:06
205.213.104.146



Report to Moderator
 Re: Cutout Relay sticking in reply to John T, 03-20-2012 17:30:45  
hello. the regulator on my late model b has 3 terminals evenly spaced apart. there is a resistor wired underneath it. my guess is to replace the light switch with the resistor built in it. inside the box are only two relays or cutout units. another question, to what terminal would i hook up the wire going to the light switch. it is in the same wiring harness as the wire for the ammeter. thanks again for your help

[Reply]  [No Email]
[Options]  [Printer Friendly]  [Return to Forum]   [Add a Reply]

Hop to:
TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]

Home  |  Forums


Copyright © 1997-2014 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