TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Attention Forum Users: On the 28th of December 2023 at 9:00am Central Time, we will be taking the forums down for maintenance while we prepare the new forums for your use. Please click here for more information.

Discussion Forum

How can I safely bypass the switch on my 70?

Welcome Guest, Log in or Register

Author

Doc

06-25-2002 11:03:53

Report to Moderator

I'm trying to get my old 70 running for the first time since I've owned it. I would like to hot-wire it so I don't have to worry about the wiring harness for now. Wires had been haphazardly taken off before I bought it. I connect a solid core copper wire from the negative terminal of the battery to the coil last night, but the wire started to heat up fairly quickly. I know the switch has a resistor in it, so is there any safe way of hot-wiring this old girl without hurting the coil? I just want to get it started so I can get it home. Also, can someone help me with troubleshooting a lack of spark. New plugs already. They look good, but should I get new plug wires? This thing ran well before it was parked in a shed about 5-7 years ago. A short at the starter was why it was parked. Do the condensor and points get bad from just sitting? I already cleaned the points. Thanks for your help.
Doc

[Log in to Reply] [No Email]

Clooney

06-25-2002 15:17:48

Report to Moderator

Re: How can I safely bypass the switch on my 70? in reply to Doc, 06-25-2002 11:03:53

Doc, you didn't say what type, model or S/N 70 you are working with. ~The early 70, [gas or all-fuel] didn't use a resistor & the later doesn't show one, but I have seen more than a few later 70's with a dropping resistor.
~That resistor on the switch was for the lights.
~You didn't say how long you want to run it?
~If just long enough to get on a trailer just use a jumper wire from the battery to the [non distributor side of the coil].
~If you want to run it long enough to drive it home you should check to see if it has a 6 volt coil [most say so on the case somewhere] or install a 12 volt coil. If it has a 6 volt coil either buy a ballast resistor for a late 60's or early 70's Chrysler product from the auto parts store [there cheap] or find the system resistor that should have been bolted to the front bottom of the steering support, then install the resistor in the wire from the battery to the coil.
~In most cases running a tractor that has a 6 volt coil on 12 volts won't hurt it & if the generator isn't working the voltage won't be much higher than the resisted voltage to the coil with a high limit on a fully functioning generator.
~As for your lack of spark; new points would be a good place to start & if that wire from the battery to the coil gets really hot & is a decent gage, maybe a bad coil.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

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