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
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
  
Discussion Forum
:

Bob M, other electrical guys...

Welcome Guest, Log in or Register
Author 
Steven@nd

03-15-2002 18:27:13




Report to Moderator

I am putting my 42 Farmall H back together and have a question on wiring up an hour meter. I have one that is waterproof and works on anything from 4 to 40 volts. My question is, Is there a wire somewhere that is only live when the tractor is running? I have magneto ignition and a regulator mounted on the generator. Light switch is O, D, B. If there is no wire that is only live when running, I'll have to rig up a toggle switch and remember to turn it on every time.

I want to have an hour meter with my new engine to keep an accurate maintenance schedule, and judge fuel economy and usage throughout the year.

Steven

[Log in to Reply]   [No Email]
Ron in Tucson, AZ

03-16-2002 18:18:32




Report to Moderator
 Re: Bob M, other electrical guys... in reply to Steven@nd, 03-15-2002 18:27:13  
Hey Steven where did you get the Hour meter would like to put one on the 44h and how many $ thanks ron



[Log in to Reply]  [No Email]
Steven@nd with a link

03-16-2002 19:12:44




Report to Moderator
 Re: Re: Bob M, other electrical guys... in reply to Ron in Tucson, AZ, 03-16-2002 18:18:32  
Got it from JCWhitney. Dunno how good it will work but it is supposed to be waterproof and work on 4 to 40 volts. Check the link to buy one. $25.99 plus shipping.

As for where I'm going to put it, I'll probably just put it somewhere where I can see it from the seat since this isn't really going to be a full restoration, I am going to use it a lot. I'm trying to be accurate and keep the mag and 6 volt system - also the original style gauges. But I'm going to try to find some bigger fenders for safety reasons, hopefully I can make them look good.

Steven

[Log in to Reply]  [No Email]
Bob M

03-16-2002 07:14:41




Report to Moderator
 Re: Bob M, other electrical guys... in reply to Steven@nd, 03-15-2002 18:27:13  
Steven - All of the ideas below will work, though with a couple of clarifications:

1 - Wire the Hobbs meter "-" terminal to the regulator GEN terminal. (Assumes you have a positive ground system - if your tractor is negative ground connect the Hobbs "+" terminal to the GEN terminal) The meter should run whenever the motor is running, even when the generator is not charging (3 or 4 volts appears at the GEN terminal even at low idle...)

2 - The pressure switch idea will work - though you gotta use a NORMALLY OPEN pressure switch (one that closes it's switch contacts when it senses pressure) for this to work. Note: Nearly all vehicle oil pressure switches are NORMALLY CLOSED - contacts close on loss of oil pressure. So you can't simply grab any old oil pressure switch and have this one work.

3 - Replace the stock magneto kill switch with a DPDT toggle switch. If you wire it correctly, no relay is required.

I personally prefer #3...

[Log in to Reply]  [No Email]
Steven@nd

03-16-2002 11:13:44




Report to Moderator
 Re: Re: Bob M, other electrical guys... in reply to Bob M, 03-16-2002 07:14:41  
I like #3 too, but what is a DPDT toggle switch? If I were to wire it to the gen terminal I would need at least 4 volts to run the hour meter - I guess once I get it together and running I can always check that out with my DVOM.

Thanks
Steven



[Log in to Reply]  [No Email]
Bob M

03-16-2002 17:34:13




Report to Moderator
 Re: Re: Re: Bob M, other electrical guys... in reply to Steven@nd, 03-16-2002 11:13:44  
third party image

Steve -

The diagram above shows a typical DPDT switch setup. To operate your Hobbs meter wire the "+" on the Hobbs in place of the warning light in the diagram, and wire the magneto kill terminal exactly as shown.

A DPDT (double pole double throw) switch is two electrically isolated switches in a single unit and which operate in unison. Radio Shack stocks several different types of DPDT switches which will work. Make sure you get a 2-position switch - NOT a 3-position (or "center off') switch.

Hope this helps! ...Bob M

Note - if the wiring diagram doesn't display, here is the URL: http://albums.photo.epson.com/j/View?u=4001561&a=30065733&p=60405158&Sequence=0&res=high

[Log in to Reply]  [No Email]
Steven@nd

03-16-2002 18:13:21




Report to Moderator
 Re: Re: Re: Re: Bob M, other electrical guys... in reply to Bob M, 03-16-2002 17:34:13  
It helps a ton! I went to your photos page on Epson and found the diagram. Thanks Bob M for your help, now I know what I am looking for this week. I'll find a DPDT switch and wire that in when I get ready to wire everything up and it should work great. Now, to find a place to hide that unoriginal hour meter - but where I can still see it...

I love this hobby!!
Thanks again!
Steven



[Log in to Reply]  [No Email]
Bob M - here's a thought.

03-16-2002 18:42:59




Report to Moderator
 Re: Re: Re: Re: Re: Bob M, other electrical guys... in reply to Steven@nd, 03-16-2002 18:13:21  
Steven - I'm going stick Hobbs meters on my SH and SM once the weather is a bit more favorable for wrenching outside in the shed. Thinking of fabricating a bracket to hold the meter up under the hood behind the generator and orienting the meter so it faces the ground. You'll have to stoop a bit and peek up under the hood to read it, but it will be well-protected from rain, etc. and it will be unobtrusive.

[Log in to Reply]  [No Email]
twopop

03-15-2002 19:19:02




Report to Moderator
 Re: Bob M, other electrical guys... in reply to Steven@nd, 03-15-2002 18:27:13  
install a hobbs hour meter pressure switch in the oil pressure galley,run a hot wire to the switch run a wire from the normally open terminal on the switch to the hour meter and from hour meter to ground.the hour meter will run when the engine has pressure,will quit when the engine is shut off



[Log in to Reply]  [No Email]
Carp

03-15-2002 19:08:05




Report to Moderator
 Re: Bob M, other electrical guys... in reply to Steven@nd, 03-15-2002 18:27:13  
Hook it up on the hot side and hook the ground to the field pole on the generator. It is only grounded when the generator is charing. That should work, I think.



[Log in to Reply]  [No Email]
Fudd

03-15-2002 18:54:01




Report to Moderator
 Re: Bob M, other electrical guys... in reply to Steven@nd, 03-15-2002 18:27:13  
Just a thought. Do you have a kill switch? Replace it with a double pole, single throw switch and add a relay. When you throw the switch it will unground your mag and energize the relay to run the hour meter.



[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 - A Question for Dads This recent topic from the Tractor Talk discussion board is being highlighted because it is an awesome display of the caliber of individuals that have made this site their own. The young person asking questions received positive feedback and advice from total strangers who "told it like it is" with the care many reserve for their own kids. The advice is timeless... so although it isn't necessarily antique tractor related, it will be prominently displayed in our archives to honor those who have the courage to ask and those who have the courage to respond in an honest, positive manner. ... [Read Article]

Latest Ad: International 140 runs excellent very nice original tractor with original back tires. Always barn kept full set of cultivators. Tractor comes with original drawbar and cultivator wrench. Serial number 63788 hard to find one this nice. Delivery can be arranged if not to far out. [More Ads]

Copyright © 1997-2021 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