(800) 853-2651
SHOP NOW

JD 70D oil pressure sensor wiring help

J

jmalcuit

New User
I am working on a JD 70D and I want to confirm what this switch is about (see photo). I believe that it is an oil pressure sensor that shuts off the fuel to the pony motor and is a safety valve so if the float valve in the carburetor leaks it will not run gas into the crankcase after engine is shut down.

I also need to find out how to wire it up.
a168302.jpg
 

Not 100% what is in there. You may have inherited somebody's science experiment that has been modified.
This free link to the factory parts should assist some in sorting out what goes where. There is an excellent electrical service manual SM-2029 for two cylinder wiring from 1-800-522-7448.
http://jdpc.deere.com/jdpc/servlet/com.deere.u90490.partscatalog.view.servlets.HomePageServlet_Alt
 
The switch grounds the oil pressure light on the dash. Has nothing to do with the automatic fuel shut off, just shares a common fitting.
 
"<font color="#6699ff">[b:654c4848f0][i:654c4848f0]believe that it is an oil pressure sensor that shuts off the fuel to the pony motor[/i:654c4848f0][/b:654c4848f0]</font>"

Note sure what function the sensor performs.

Take a look at the [b:654c4848f0]CRANKING ENGINE FUEL SYSTEM[/b:654c4848f0] diagram below.

a168321.jpg" width="650"




Note the gasoline shut-off rod (Key 1), gasoline shut-ff needle valve (Key 4), and flexible gasoline line (Key 6).

Take a look at the gasoline shut-off rod rod below on "John W" our 56 Model 70 Diesel.

a168324.jpg" width="650"


To shut off the fuel, turn the gasoline shut off rod counter-clockwise.

Take a look at the flexible gasoline line.

a168329.jpg" width="650"




Gas is gravity fed to the carburetor.

You also might consider making this same post on the <a href="http://www.yesterdaystractors.com/jd/wwwboard1.html">John Deere Tractors Discussion Board</a> on this site.

Hope this helps.
 
You must log in or register to reply here.

Similar threads

S
Ford 3000 oil pressure switch removal tool
Replies
11
Views
613
Destroked 450
Destroked 450
J
2-105 transmission lube sensor
Replies
1
Views
253
Jake Collie
J
P
Need help identifying 70D engine dipsticks, pony vs main engine
Replies
7
Views
421
fdt860
F
R
John Deere 150 planter monitor help
Replies
1
Views
153
dieselade
D
C
MF 35 oil pressure gauge
Replies
13
Views
379
Catalpha
C
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.

Copyright © 1997-2024 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

Back
Top