Yesterday's Tractor Co. The Right Parts, Right Away
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
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
  
Discussion Forum
Show Parts for Model:

4 wire key switch on TEA20

Welcome Guest, Log in or Register
Author  [Modern View]
tutermoe

10-07-2010 10:49:06
98.65.193.210



Report to Moderator

I just replaced the key switch with a new universal 4 wire switch, now when I try to start it, it starts to turn over the starter before I turn the key all the way to the right, only way to get it to shut off is to turn the key all the way off, I wired the new switch, just like the old one. Any suggestions? Thanks.




[Log in to Reply]   [No Email]
Bob (Aust)

10-09-2010 16:39:48
121.222.34.122



Report to Moderator
 Re: 4 wire key switch on TEA20 in reply to tutermoe, 10-07-2010 10:49:06  
Burnt smell doesn't sound good! If it has a dead short that would account for low voltage across the starter solenoid.

Ask an auto electrician to test the starter motor and maybe give you a repair quote as it may be cheaper to repair? If the windings are OK an overhaul should cost around $80, versus a new starter for $150.

The original Lucas starter is better quality than the Chinese or Indian made copies available after market.

[Log in to Reply]  [No Email]
Bob (Aust)

10-09-2010 12:11:46
121.222.34.122



Report to Moderator
 Re: 4 wire key switch on TEA20 in reply to tutermoe, 10-07-2010 10:49:06  
OK. If the leads are getting hot the battery may be OK but you have a short somewhere? The switch or solenoid may also be faulty.

I'm not familiar with that switch so can't tell you if it is correctly wired or not, but it doesn't "look" right? The white wire is power into the switch and red wire is power back to the solenoid. One would think the white power in wire should probably go to the switch central position (if that is the power in position?) - but appears to go to the accessory/on position??? Don't change it as I may be completely incorrect?

Where does the red wire on the switch central position go to?

Can you look closely at the black bakelite back on the switch and see if there are any markings on it? My guess it has three positions - "off", "accessory/on" and "start", or maybe four positions "off", "accessory", "on" and "start"?

If you have a multimeter set to continuity, you could disconnect the switch and check it's internal circuitry?

I Googled "wiring diagram universal ignition switch" and came up with a number of sites but THIS may help?

The reason it is hard to help is that your TEA20 never had that switch from new and did not use a starter solenoid. Originally, the starter was engaged by placing the gear lever - "shifter" - into the "S" position, which activates a mechanical switch in the bell housing, behind the engine. Often a solenoid is fitted because often the mechanical switch appears not to work when all it needs is adjustment - it is held in by four screws and adjusts forwards and backwards.

Is the battery ground/earth still connected to the back of the dash or has it been moved to one of the starter bolts? On these old tractors, the dash is a very poor earth/ground and the lead should be moved?

The Lucas starter on your tractor does not give many problems. You could test run it in a vice, by jumpering leads onto the case (ground) and the terminal on the back end of the starter. There is a dust cover around the back of the starter, lossen the screw, remove and you will see the two spring loaded brushes and commutator. The brushes should have "meat" on them - not worn out - and commutator should be bright and clean. An auto electrician should be able to test it for you, for a few dollars.

Sorry about the vague reply, but I am not familiar with that ignition switch. If the black bakelite has any markings on it, post here and I'll see if I can work it out - or someone else may know. I will check my 1966 Jaguar XKE later today as I suspect it has a similar switch, although it has a separate starter button.

The Messiah of Fergusons, John (UK) may be familiar with that switch, as it was common on British cars of the 1950s and 1960s.

I wonder how a TEA20 got to Knoxville? :D
Bob in Oz

'53 TEA20

P.S. That is a 12 volt system with 12 volt battery? What is the tractor serial number? If in doubt, the 6 volt and 12 volt Lucas starters are different (6 volt has a nose cone) and I know the Lucas 12 volt starter has "12V" stamped into the case.
This post was edited by Bob (Aust) at 12:40:47 10/09/10 7 times.

[Log in to Reply]  [No Email]
tutermoe

10-09-2010 13:02:31
98.86.30.67



Report to Moderator
 Re: 4 wire key switch on TEA20 in reply to Bob (Aust), 10-09-2010 12:11:46  
I think the starter is bad, I pulled it and had it tested, both, with a battery charger, have done this before, doesn't spin. Also jumpered it to battery and grounded to block, still no spin. Also starter has burnt smell to it. Can these be rebuilt or do I need a new one. Might just order a new one and rewire the whole thing, and use the original safety switch. I bought the tractor from someone who had it 5 years, he didn't take very good care of it, sat outside not covered, only paid 500 for it, if it takes a little more money to get it right that is OK. Thanks

[Log in to Reply]  [No Email]
Bob (Aust)

10-08-2010 21:37:36
121.222.34.122



Report to Moderator
 Re: 4 wire key switch on TEA20 in reply to tutermoe, 10-07-2010 10:49:06  
Use a volt meter or multi meter to read the voltage between the black lead from your solenoid to the starter, and to ground.

Check the voltage whilst cranking over the engine - or trying to crank over the engine. It should not be less than approximately 10 - 11 volts whilst the engine is cranking.

If less than that you probably have a bad earth or the battery is about to give up.



[Log in to Reply]  [No Email]
tutermoe

10-09-2010 10:22:34
98.86.30.67



Report to Moderator
 Re: 4 wire key switch on TEA20 in reply to Bob (Aust), 10-08-2010 21:37:36  
OK, have no volts showing from solenoid side to starter when turning the key to start position, I have also noted that both battery cables seem to be getting hot, more so on the negative cable going to the block, nobody responded if what I have is wired correctly from the pictures I posted, where should I start, all new wiring, cables and solenoid? Also nobody has told me yet how to make sure the starter is good, how can i hook it up to a battery to see if it spins? Any help would be great. Thanks

[Log in to Reply]  [No Email]
Bob (Aust)

10-08-2010 17:09:18
121.222.34.122



Report to Moderator
 Re: 4 wire key switch on TEA20 in reply to tutermoe, 10-07-2010 10:49:06  
Is there a reason you are using a starter solenoid in lieu of the bell housing switch?

What voltage are you getting across the starter when you try to start the engine?
This post was edited by Bob (Aust) at 17:11:31 10/08/10.



[Log in to Reply]  [No Email]
tutermoe

10-08-2010 18:08:15
98.65.214.223



Report to Moderator
 Re: 4 wire key switch on TEA20 in reply to Bob (Aust), 10-08-2010 17:09:18  
just got the tractor a week ago, this is the way I got it, just want to make it right, runs great when it starts, just need to get the wiring and starter firgured out, where do I check for voltage to starter?



[Log in to Reply]  [No Email]
tutermoe

10-08-2010 16:12:40
98.65.214.223



Report to Moderator
 Re: 4 wire key switch on TEA20 in reply to tutermoe, 10-07-2010 10:49:06  
Here is what I have now, all I get is a clicking noise when trying to start, is there a better setup, I don't mind rewiring or new parts to make it better.

Also, how do I test the starter when it is out of the engine.









[Log in to Reply]  [No Email]
Mike(nc)

10-08-2010 03:50:24
98.26.205.53



Report to Moderator
 Re: 4 wire key switch on TEA20 in reply to tutermoe, 10-07-2010 10:49:06  
You can also use the gear shift to start it by running a wire fron the inition terminal on the switch to the terminal on the frame and the other terminal on the frame to the starter Solenoid. This way the gear lever will only operate when the key is turned to ignition. Thus you have the safety of not starting in gear. Good luck , Mike



[Log in to Reply]  [No Email]
john[mo]

10-07-2010 18:52:07
71.14.179.53



Report to Moderator
 Re: 4 wire key switch on TEA20 in reply to tutermoe, 10-07-2010 10:49:06  
look at the back of your new switch. there should be markings for your terminals. there should be a terminal marked S. that should be the wire going to the starter relay. there should be one marked I or IGN.that wire should be the one going to your coil. then you should have a terminal marked B or BAT. this wire should be coming from the battery to the switch. the last terminal may be accessory or headlight but you should be able to get it starting correctly now. it seems that you have the starter relay wire hooked to the ignition terminal
This post was edited by john[mo] at 18:54:12 10/07/10.

[Log in to Reply]  [No Email]
tutermoe

10-07-2010 12:41:50
98.65.200.129



Report to Moderator
 Re: 4 wire key switch on TEA20 in reply to tutermoe, 10-07-2010 10:49:06  
note, this has been modified 12 volt system, it by passes the normal start switch on the bell housing and has a starter solenoid, and a 4 wire key switch, which are, Starter, Accessory, Ignition and battery, it also only has the one wire alternator and amp gauge. I did not wire this, so can someone tell me how to wire this, so I don't ruin anything in the process.

Thanks



[Log in to Reply]  [No Email]
John (UK)

10-08-2010 12:47:08
79.79.208.109



Report to Moderator
 Re: 4 wire key switch on TEA20 in reply to tutermoe, 10-07-2010 12:41:50  
I can supply a wiring diagram if you email me direct so I have an email address to reply to. Just say what you are trying to do in the email and then I will know....John



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