(800) 853-2651
SHOP NOW

D7 dozer

D

dhomchick

New User
I have a 1973 d7f dozer that whenever I turn the ignition switch on it trips the circuit breaker on the dash. I checked the voltage at circuit breaker and there's negative 24 volts. Help me please
 
Sounds like something is shorted.

Look for the obvious first, mouse chewed wiring, pinched wire, wire against the exhaust, etc.

If nothing, start disconnecting accessories on the ignition switch circuit. A wiring diagram will help. Start at the switch, do the easy ones first, disconnect a wire, try the switch. If the problem is still there, reconnect that one, go to the next.

It's a process of elimination. One thing you might be able to do, feel the wires for heat. Once the circuit has been reset a few times, the shorted wire will begin to get warm.
 
You have a short and almost all the wiring that would cause that is right there behind the dash. Nothing complicated about the dash wiring on a D7. As the others said look for a bare wire usually around the lower part of the dash board. SOMETIMES those breakers just get weak with age.
 
(quoted from post at 15:39:08 03/28/17)
Go to acmoc.com and ask your question.

A lot of cat owners and mechanics there.
Click to expand...
quote]acmoc website is for sale couldn't get any info [/quote]
 
unhook the glow plugs and try it see if it still does it if it starts you have shorted glow plug or glow plug harness when you turn to start it powers the glow plugs for just a split second if it still does it unhook alt and try it the alt can short out and cause same problem but most of time it is the glow plugs if I remember correct that could cause that but it has been a while
 
You must log in or register to reply here.

Similar threads

F
B F Avery
Replies
4
Views
631
used red MN
U
B
4960 Mfwd issue
Replies
3
Views
285
ADB-Ia
ADB-Ia
MarkB_MI
Is that trailer battery getting charged?
Replies
15
Views
735
MarkB_MI
MarkB_MI
F
Strange problem
Replies
13
Views
926
Freddie2010
F
M
John Deere 1010 dozer not starting
Replies
6
Views
495
Dan in Ohio
Dan in Ohio
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