Yesterday's Tractor Co. 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
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
  
John Deere Tractors Discussion Forum
Show Parts for Model:

John Deere 5105 wiring diagram

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

05-16-2018 15:33:49




Report to Moderator

Well I just bought the 5105 and it worked great till this morning. The tractor will sporadically not want to start. Funny thing is if you keep the key switch over in the start position the tractor stays running but as soon as you let the key drop back to the run position the tractor dies.
It will do this a few times them start no problem at all. I traced the problem to the wire going to the injection pump. When the tractor starts and dies the voltage stops going to the injection pump. When the tractor starts and runs correctly it keeps 12 volts to the injection pump.

The problem is I can’t figure out what is causing the power to go in and out to the injection pump. I haven’t been able to locate a wiring diagram anywhere. I assume there is a some type of relay going in and out or the key switch is going bad.

[Log in to Reply]   [No Email]
glockky

05-18-2018 09:30:00




Report to Moderator
 Re: John Deere 5105 wiring diagram in reply to glockky, 05-16-2018 15:33:49  
Quoting Removed, click Modern View to see

I didn’t try swapping them around yet. I just seen how dusty they were so I tried just cleaning them up and blowing everything out. After that the tractor fired up every time.



[Log in to Reply]  [No Email]
glockky

05-18-2018 08:54:01




Report to Moderator
 Re: John Deere 5105 wiring diagram in reply to glockky, 05-16-2018 15:33:49  
Quoting Removed, click Modern View to see

I found them today Mike.

I took several of them out cleaned them off and reinstalled them. So far the tractor is starting every time. I will have to wait a few days and make sure it continues to work. Hopefully it was just a loose connection.



[Log in to Reply]  [No Email]
Mike M

05-18-2018 09:08:29




Report to Moderator
 Re: John Deere 5105 wiring diagram in reply to glockky, 05-18-2018 08:54:01  
Did you switch them into different spots ? If it acts up again swap them around. I have no idea what they all do as there is not too many electronics on those.



[Log in to Reply]  [No Email]
glockky

05-17-2018 19:22:11




Report to Moderator
 Re: John Deere 5105 wiring diagram in reply to glockky, 05-16-2018 15:33:49  
Quoting Removed, click Modern View to see

I’ll try to snap a pic tomorrow. Mine has 2 diodes and one relay all to the right of the fuse box. All of this is located behind the panel for the key switch.
Unless there are more somewhere I’m not seeing.



[Log in to Reply]  [No Email]
Mike M

05-18-2018 04:39:13




Report to Moderator
 Re: John Deere 5105 wiring diagram in reply to glockky, 05-17-2018 19:22:11  
Item #1 in the parts dia. On the very lower left side.

http://jdpc.deere.com/pimages/LVP3/LVP3877________UN26NOV02.gif



[Log in to Reply]  [No Email]
Mike M

05-17-2018 16:09:27




Report to Moderator
 Re: John Deere 5105 wiring diagram in reply to glockky, 05-16-2018 15:33:49  
The relay that controls the fuel inj pump is in the relay block at the lower left of the dash. 6 in there total it is the one on the lower RH corner of the block. At least on mine it is. Pull it out and swap it with one of the others.



[Log in to Reply]  [No Email]
glockky

05-17-2018 15:08:04




Report to Moderator
 Re: John Deere 5105 wiring diagram in reply to glockky, 05-16-2018 15:33:49  
Thank you very much this helped a lot.



[Log in to Reply]  [No Email]
glockky

05-17-2018 15:06:47




Report to Moderator
 Re: John Deere 5105 wiring diagram in reply to glockky, 05-16-2018 15:33:49  
After looking at the wiring diagram it looks like the only thing between getting fire from the battery to the fuel shutoff solenoid on the injection pump is the ignition switch, a fuse, and the starter relay.

I have tried to test mine but it’s so sporadic it’s hard to tell what’s failing. I’m going to start with the ignition switch. My switch feels loose and sometimes wiggling the key around gets it to start up. Although that may just be a coincidence.

If the ignition switch fails to fix it I’m going to replace the starter relay.

I may also get a good contact cleaner and clean all the diodes and relays while I’m changing the ignition switch since it all right there in the same area.

[Log in to Reply]  [No Email]
Mike M

05-17-2018 05:32:04




Report to Moderator
 Re: John Deere 5105 wiring diagram in reply to glockky, 05-16-2018 15:33:49  
Mine drove me nuts after I changed the fuel filters and tried restarting it. One of the first things I checked was for power at the inj. pump when I turned the key on. What I did not do was keep checking for power as I cranked it ! Mine the power was dropping out when I cranked it. your sounds like it is doing the opposite ? I ended up removing all the relays.Cleaning them up and sticking them back in different locations. There is a panel full of them at the lower left side of the dash. I don't know why it has so many ? and I don't think many are even used on this model ? Owners manual is useless on this. I do have it marked in my manual which one is for the fuel shutoff now , but it is at home. I can check tonight if I remember.

[Log in to Reply]  [No Email]
glockky

05-16-2018 16:34:31




Report to Moderator
 Re: John Deere 5105 wiring diagram in reply to glockky, 05-16-2018 15:33:49  
I also want to add that I think the wire that going to the injection pump is actually powering the fuel shutoff solenoid but I’m not positive.



[Log in to Reply]  [No Email]
JoeM(GA)

05-16-2018 17:17:31




Report to Moderator
 Re: John Deere 5105 wiring diagram in reply to glockky, 05-16-2018 16:34:31  
Shoot me your email, I have a PDF of the tech manual you're welcome to, has the wiring in it

Joe



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

Hop to:


TRACTOR PARTS TRACTOR MANUALS
Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). 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. [ About Us ]

Home  |  Forums


Copyright © 1997-2018 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